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 0xd9d1cad1cb9ef448bed4e3b3cbc8e94bf2aabef130a875353ffee383dfabddf9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd77344e-a927-4d33-b99f-a041d447d110.json and https://artists.proofprofile.net/proofs/artist/cd77344e-a927-4d33-b99f-a041d447d110.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 0xde0a43be9eb061616bdf9d60eaca91b4431660dd9dd650a47be95221399333ac. 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/AUWA81900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f75a700c3ab784226c0a01eb5d9adf25e65c7b861e0b82f44a0f51b47a46d. 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/AUB1F2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa960ce9e197961eead8c7297c397bce2e9ac9b7958164c87f7de26e789a5fcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUB1F2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5fb16f072a2bae3680ea3725b3cf296ffde0032c5c2f9a380609a5a14da34f. 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/AUB1F2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98e243b8974ed75eea2814843368d7edf1ef05ca56de17a3f8fc72efba762c. 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/AUB1F2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835ccf0abdb939c6576e4a255eabfc0fb9a6705e6a3ea8b4388e155ba6267986. 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/AUB1F2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd1dc9a606084757ce9af2cf7087d2e94f83b766653358951396f8636aaac6. 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/QZNJV2519381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223851acfa7fc4a0c05190f1ea02072c401284d4f3171a6384ac0c4f1c8ed37d. 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/AUB1F2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62118afde228f158833c489504a18fe6612b69a9419be73060d61d7021e0d7e. 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/AUB1F2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb98e243b8974ed75eea2814843368d7edf1ef05ca56de17a3f8fc72efba762c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUB1F2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32bf4a83f6fe3c1ab0dc3d69a21c3dd80a550fc94bf425ad4357e85bb17c04. 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/AUBEC2067220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4005a288af9b375b65b5ab00ddf56c4f9ba5553b4865e2f56e138932d6f921f6. 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/AUBEC2067221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c3a3b938d7ea7b7320ac0382ca75bcd4ca4155b9336103c5078b325c002bb. 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/AUBEC2040491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92fa9c89e88b9123a1583972f3526a092c207c481186ffc75d5f2ef854ee012. 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/AUBEC2031001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9591df80819849de380f0073f30e472c733281d765d1f889a52dd341d82bd7f. 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/QZHN71992122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3d49f86696edd5ce86e6b36122cd14a941bf271a7750fa16d229491ff23d12. 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/QZHN71992123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f82345f6f48f9b422b6f48e0f42dcea282fa67b49ad76d81c763122f2ebdc45. 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/QZHN71992124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad72cf5718a41f8d0a912b03fd64d948258ceb17d9896de88ffee03a81dcd59. 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/QZHN71992125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcf1fc7fa88e67a45a7c590b3b9ce6dcbb98b77b5c31651c78fcee7cfc3cbfc. 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/QZHN71992126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1872ff77b71b3a0124ea0d86e0acfb3f1b56370c20f82acc520e223aee8e1fe. 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/QZHN41927288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2601353ba1fe85c241262d04eb16e1cca8ab2fe15626fb4d42e9718ce596875f. 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/AUBEC1906990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f3691d7f4c1e6c642ba6c6f7b5a34ee179a8027b3f087ddd1faafe41fe3083. 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/QZHN71996411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993dfa2434419942230c5e0aa361b4c030bd76cfc4cb91da0dbd474151c44751. 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/QZHN71992583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeb34d50d7b89e02319dc8b1861fb20b9981829d05eb7c07f17fb2cdf142c3a. 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/QZHN71994993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8b02dee76556af0cea206a9d5a930c8e286dc3b95fc9f3c74a2f65fce678bf. 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/QZHN41927563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721f81fdfa038ec8052c6b6cc9c0842ca8ac28cd043511c77d488a8a9006af0. 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/QZHN71992582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd35c59ed15f6105caab5c752de5f7bf16a9638b8b90c62173e6a4a532509750. 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/AUBEC2035183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d2571ae7e644f714f8f6ee80581975262ae975dc43cee0579f69c07ac5966. 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/AUBEC2047976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb938c81dba5e4b89c2d1945a736990ea7c80f808a85dd8d7a7c0ec479deee21d. 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/AUB1F2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aa0048e097b93c83ad4b8497224c2b8117e9bc94cd9a60b37f4ae57da2a98d. 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/AUBEC2054652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fb09113b7e2cd24a53fc42186a68fa8f0b683c23be67a8a7d0dc44510e01f9. 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/AUB1F2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f75a700c3ab784226c0a01eb5d9adf25e65c7b861e0b82f44a0f51b47a46d. 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/AUB1F2500008.