Karlo may refer to: Karlo (name) Karlo Island, of the Indian union territory of Andaman and Nicobar Islands Karlö, the Swedish name of Hailuoto, Finland See also Carlo (disambiguation) Karlos (d
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920ef015e813bb277a36f5bbe71278046fce015c83a39c91f50879a7e077b1dd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/486f3f2f-9269-4f70-b92b-e5d11cde61a4.json and https://artists.proofprofile.net/proofs/artist/486f3f2f-9269-4f70-b92b-e5d11cde61a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068b56a980e653ca03f43472af4cf1faf80e7a62d28f9203476798ec478bff53. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES71958321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8903a387c08debc1d8584a81f8d4b7f44e77bcbf5bffb0e68b05c5a0cd1d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES71958322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e1650c9a5da5fae40da9ecd2f842e9d3631164d41930daf27ce3bdc8f1b576. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10781084b919db91659820607ca6d97f01def8c849b0dceb9c8d218b0be6e1df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb6d28eaf31188962cfed33b9348040e1ab4ef05770f5fc6d8858bdb8e3adcf. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57bcdff372cfb9d3c96d334a92144c71ffd12f76b20a54f753eafd8695b90d9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:31:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e2acf1a68a54147d3b499a9f482817e8ad488f13c63bac276642740207e087. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de202a07b68980d26ae62cce055028ab85ae1106df69b7d41ea28a5f8700950. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434b9f80258c96792cbb0392a4899a156fa522be00d9d282c6ec420a31410dad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec32416ee22ec2ac6877e14e11885ee08b8df758542e698f9bcc26f8a354794. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43bc218e16de5019fdae193136311d39067cdeccde99a68f63da65a444baa58. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb80dcf180de7692ada46f981d2ec595a7465388285145f00607900748cceee. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8b91147c7b1e954207b065fc11a31ad316ab2f861ce92a4d9afc8ce373186. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES81950372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ffc38b2eb348ef77c32ccabd43f597c0d7ebcd0c27b8e65cd4abf4d310e945. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805f06ac67baaa8ef734b0f7e801dca2cc74badb88568948a2d229afc31a0f0d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66a32c3fb834df136a60d944724c5ce17020410879b9b7eb60679602fbfeda2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc480556d209b496434ebf6a98134813c7427b5bc915321e66240d95c00051cd9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:37:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242aa9ad2bb25650cdb731a1bf6f84564fe930ebfffde612c38e6ec731559a00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0156f3ff621dfdc6f15b698d5a87d84a5a0827cb3cc05de7762afdbf30dc88. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b54b3e9d40b34f272e8bed3f8abd3f4a1382da6c53d59ed201cacc45fcda6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb0b8d181137a49d3cce7fbe883dd130ad4c08607cd2a7ab6a0d6d35746fc52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf946791f809d87a075fdabd3fe1d94874690c6a7a41112faf4b05ba96c4d39eb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bad46b8b766145f531b26ff4464c17d8f7768f0ff72de1b6d003a89fa26c5a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196239b04bd89b8244fdea85e55ebcd625fff64c24a9dd18d45e08f95677da2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff3a3c4def1401bcb9982e0c4a4cbadd56e63a57bbd2b93d929921a819a7928. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7def46654b5f5481f6bc25e03e575b5979b20d8432dcd64804c9f1271cfafa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3293892aadcc5a53454d626eaf11586c000ed66e8d7461553a0825270bd7ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff943c82b43d2267a612003ca9cc07bd0ac2a47ab7f07f5c2bd8eeda1963ee6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a0a9422a0856d9f77b9ab3722234dea86ed981f08a43bfc0af1457dbdc553a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c792087249281cfdf3429e9a2efb3e9133922767da44b027219606b808a5177. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55231676b39bb4c4f11132759902d2f9d5c86b8770235320b352b7450795fbb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb088d8b4df7b8868c3aa871b56536dcfbb52f30a57cc9aeddf1d917d198b6fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721292564b3065f6c4febf37347784bac4c8be28fa00ffc84f6cc3140d1a4b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef183520e9b5fa76ae81341f97cca84a2c486c8b504a89926cf585bdb5777900. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b364dfbe116e193f0bf2e8239356ad43e6d5cf293ee1636ea614ef257182294. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a5cc564238f4b421f3051ed71b5d7909eee81e13727a1e7669a70d72a024f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda16e3e2f52597911f0fedc0d30f266e17a91706003a2fd4a3e042a9020092d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a8d61b1a038e6e7e69ac14c9d338cf51fd8b6b1f1b5f8f292561115fdc6537. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b318f08266abe7dafac2fe473f18370bc3ae96cc8fc5a0587b251197101973. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4667fe1d75f4256f18b7ef130b9b730f255656252eef8c2265ba8fa55344c0bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb7d62e781faf1b623ef6c46fcee2f64495cbe4394416eea34f3481fa6c89c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410fff07e0e068dc687739d3fa05cb002b71900df59f68890964531105c22cbc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814276a9551df418c6948e80d2c28279908b5b5f63f0d97e588dff3ad1b6c0df. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000175.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c2fa75354f331a9b441e328b71e2c273ab6238e9ab2f17babaa34da985b883. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d34e3b136ec3faff7a9e8b3c43de6b6d2d0ae695788ac07ef3d5943ccb8e3af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb0f0e9a3ee3d15fd1f89e9528b6b3731b28578e0a07532d52a661c58051bc0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dce4c975b1de8965ea262a27aeea20d44a4d1677ad9a5b3ed8573205438d7e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72300657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99695121b78dd5a2ef1d5e69e659ba1222a378aa4c2574c9b0d14e25b710a2a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc058a72c22f9c84ad156bff49c14ba99f09a6aa5b3e8448ec29fe144fc2be1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM71900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb93fadf915996cef856226d118ac466b02d9a649f11b3d09f47cde247b49d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232201104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9038cd43465ae453980f005e980c34e59d5278115ebe67e101386f43139dd884. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA232201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a5318d056f9afba3dea86d987a74d018053951817751045716431a53ace81. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72100760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd763dfda59142bc39f9911eef8c4724728985f1fbcecd97406053cf4cafe8c6c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9Y21727694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d12ef1aeffccded521d8d9b19574afac34c61a054460ac1b8b08a60e8b8215. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92123857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d12ef1aeffccded521d8d9b19574afac34c61a054460ac1b8b08a60e8b8215. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3Q92123857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a355c4e6e430999c0dd182f3cd1c59979e1014739d7f4b32b9b8143bce5f661. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01bd17bb1f42e7363d7fb471cb4e27bdcc82abe18143d6e91a14b9cfad0b42c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:51:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZUM72100211.