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 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 0x62a932328b4c4ccf5ddd01ceaa4e64ffaaf03b2ab2f03ab371324b108650b264. 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/400dd592-6010-423f-9c39-a4377c26b4e1.json and https://artists.proofprofile.net/proofs/artist/400dd592-6010-423f-9c39-a4377c26b4e1.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 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 0x63187b6b103ac6096bfb2b2dd3617528fb488242723bf939949668c8eef4be77. 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/USXKX1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d58cbe69a3cb41e9201680276e1e67c8bd60db3b59971e4acbd78a8bc64483. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N22080471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb005398444499dcc43feb13acf4d2b79dc9fdec80e3a3086b2359430243a5f46. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6N22080472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee4d561d86f347dbedfa440922e84eb3ec7ff480df8ede94e4e4a4b5a92867d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM6N22080475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a7d300dad94037750de5775d124ab7f5f1b3eaa9b55a0b3e98329b81b58311. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QM6N22080478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ac74fa34adfba5a0af26a14fa0cd554677be84bb6f1a16cd699201914c94c3. 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/QM6N22080479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350b5fac4f5c9041d4903488b072fd61f511e49c96b8c1c6cddfc8224f91cbd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6N22080482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679b21f83301360ea0b0802dc1fdd4724b2b3bdc34a732a7f118cb5f38f548bf. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QM6N22080483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e485ae9f01aeacda82968345a7e14af0d3b393e5489c66645c3035052eb336d. 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/QMFME2092339.
A Tan Solo una Hora (Remix) [feat. Eddy Herrera]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0239fb74f030d33255c36c3d36ae89ea407f90bfa49a48b14ed1aaf5cd41b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TX1873388.
Solo Te Veo (Remix) [feat. Lapiz Conciente]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b9b2b86169af8e111f4b2a7733b4ae898f8e016e101d0de05579d9e78734a2. 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/QM6P41806852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a5589a4e98ba2a9db14508b243488aae72a3222c909bb0d3dbb1547cb84eb7. 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/DOA571800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a5589a4e98ba2a9db14508b243488aae72a3222c909bb0d3dbb1547cb84eb7. 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/DOA571800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5eb1bfcc891ae3711b0efba641964b87941246bfb1ab123ab3195cfe6c1bb9. 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/DOA571800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f754cfd541c39076b3521a4b367ac0e72cbe523022d463948d18073db006484. 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/DOA571800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb753fc0f9924315b582ecbb942bdb5df207996d04daf2b1c82d759b08a8e58a. 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/DOA571800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a84ab8b5dafdc4bbcc7fd4f703b4b681a859324a235f101e04f0684a6c674. 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/DOA571800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f15113e31330521004d87a953ad02318cc5836bfd7e025569fbf2c33a1cb0. 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/DOA571800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddcd2cf2157c68082177ababbe02687c67e7fc0f2d70d87b844f72a8df0e5f9. 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/DOA571800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a55e94764f0320ce33ccd0831e25a850b278f76a91374168059d7463b854154. 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/DOA571800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b9b2395a80614288664bc03d1722e686ee716c647a4ce84f54e7c371b2b143. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DOA571800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621c1a87e96e259ec742ae7edd31b528ec4c101a807e0e7a353d72ad5fdfea14. 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/DOA571800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235973c50f986785ce7180e947cd40c24445c2b7f74295dbc46513894d4ce46b. 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/DOA571800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0fa3ad4679594d0f5c32133c43e0e1e45b02ed06392e1986a406741aba5ca6. 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/DOA571800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d16b0a421fb0fbd78427a2cd526a2544e0cecc9c0749553d5a809326f85764. 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/DOA571800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76afa1fee263cecbb1beb2717e3b2051157d58ce3d0f9dffea54a62f56b40ee7. 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/DOA571800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424bf1a0f32713c6b8f22c139dce3d5b7455546a50b6bb262b9ceb7b3e52d035. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22075783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146fa59bcf99a67a91dd3807703c406a74e6c67237cb3ef196d7051fa033fe1c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22075785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd515860a9887cdaeba5588d72d04491c786ce3cc206dcfaf244d43e19e2ace6. 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/QM6N22075786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50c7472836ab23d573abf385aec819c19a0d26d9f962e86084079ae27f36de. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM6N22075787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab67547279e909d2434886f754775cfd20f48ca156176c70bb76f18381d5bbe. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM6N22075790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0978f2e128100a88b6ac4c33b32366e957bfea12391b23848b4020de23cc028d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QM6N22075791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff204ab729936596b8fb48f17592acc26be015240dce50b3d23286bacede579. 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/QM6P42072042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bc7ee3a8d25a1a2a80696e63e499eedca1f949384b0783ae7619ce0bd158aa. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QMBZ92196739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aaaa2926ecd82b858f206018cbe84cf32f35b852d22510a59519961bf505ed. 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/QM6MZ2232981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8ecbcb6a20b3826cace8c0655dc4e7e066d427d25ec4674ed6fa7b5278a6fd. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM6MZ2302671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdb44807e2746c8d97818b9592094f51a5fdbae5449e783378a4d9ecbcc072b. 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/QZNJZ2356031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac087b574142804fbb3ed69aaa617d08c17840012f228c52815b73990a005bdd. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZDA82597413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1b08dfcc6861a6bd8c5014d9f2eb24e257d4f5ea3e86be378f53b9776f230. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA82590999.