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 0xdb482dbf11b87cdb9fab3484c54d34b730e890b737be2532a3794093d9a91c3c. 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/7a260dc7-3ac1-415a-9bb7-9a122809617e.json and https://artists.proofprofile.net/proofs/artist/7a260dc7-3ac1-415a-9bb7-9a122809617e.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 0x04f10c6ce7cd9d4468a1f7ad03068866d07b7ef1bbe77b72a9457f49726d0f92. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG2328825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf840281cc5c4c8f519d6c2d7b534e1baf88a1a45c462c32bff4073204f106626. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USL4Q2034342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e202778dec47c6366125e3ee0cdf208286f4d9f4803a01de93e73362acf655b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM82198348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e560375f81454abfbfd3568867d02cae045cb0177d9f3a9d908e5f24cf8845f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:56Z), 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/USL4R2108815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af52277731278d19642c30e6b419cc2b5e4d7f497cfd9b97bb35cad41ee035. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USL4R2171236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff39bfbee66a4c859f533a93af5cab924d88f5b45be74df07bfa7198963408a7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USDY42211757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c316116320587daa53492531222b1d8fa8483b7a493b85ea492a5dcddd36a2. 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/USDY42232364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4a0312876a4b89c6bc7f382998a8dca47097a5e2fe67d60e46d81ac1262353. 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/USHM82232561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd75410b1aa5c367f83d4a20cdb7d21d7eaa21d02ffc45e35226ef42eeb22d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM92268099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d14e5f71a421f8d300a420e93a0c82b4cf9173b0b2a8293d60a1103056b7de. 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/USL4Q2233252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271f68070122ebca0bf206a16bcaefa331ff42df526eabef28650cf3fb74b9e8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY42312313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433e1431259afe07621d209890403ad82be283df0ae1af1e2132d8c35241c721. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM82315618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0993e89d120489790a3895cc42cbe3a18d4b4c46dad3f97c7bafd229d6f98c0. 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/USHM82315620.
Mixe de Corazón & Flor Mixteca (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c840ae05f6e0fad0a3ee3d3b1189def84e640b471265268535c99ac8fca58f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM82315622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950d1eaa0713ae44af0f1e0af8e41c214df59732e98f047ac0b5162bc34d5afe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:39Z), 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/USHM82315623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ec04bad205e659ae4ae717e905a49d3803bd86c9c035c47f2d4ff407d064f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:48Z), 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/USHM82315624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6219cd87a82c8243c7219359d6ec57ed495cd3362a7ebf6296db82072e5b95f8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:33Z), 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/USHM82315625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42fb1d4ad783be0f5fec3d20b0fddc560edda8728465bdada3e5aea0cf7fde. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USHM82315626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a78e5824d0baf9216435695690f737d4cd9607e16f88a258ef0da8982a7e697. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USHM82315628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73cd9d9abdc226f53efae6ce9d73025ad088647411f0e1602d0b998657eca42. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USHM82315629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a0210cca1d0e45e0facb6b095654b49e5818437859d5937d9ff6f15432517. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM82315630.
Chilena de los Tíos & Chilena de Mi Tierra (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53325ac41a9f19f4b1552104336077145825b3b90339fbb2beb053e18f7feead. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM82315631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d2ea1a955fc0ae825f5d39c740b960dc84354e4f0b839f2a6a3e67ffcb12fa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:03Z), 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/USCGH2400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bebda9e4e7bddf582b0c6a4888b04a5720eb4d672fb268fef2d44bba52d07e3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:01:03Z), 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/USCGJ2424178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a17f22b9afd395b1b87712f5e0aaa4c3f1d454f151196ad4c82a645f7a68e8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM92498850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73a052b92c4d2acac63eea56d8c2afae0f1036a1ed804e8a0f47bf16889df8. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USL4Q2477760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39347251ac710a5649cc8ac33ad09cd7ab33c7c070edbbaf4f8d9bb37216fd22. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USY242484270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ca3423eeb87406210cb2ee836029426c61c62a25c053ee816ade930437e4ba. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:39Z), 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/QT3TB2416441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad013254a9037a803a979c69dc17cb9cd8886d2b1d4b572adf3d890aae55212. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGH2529720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a3599f1adc8d835f4e66ae1fefd299176c5d5bb466bfe1cf77d4cbedb2d1c7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDY42577359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b1eb9b6440c7c125cb1af4eaa56a1f0e81779a4370a6842ed970ce077d7bd8. 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/USHM82592907.