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 0xc2089e3ff804793a40805aa71b3efe8eef133e050ac63001e77586f5ee022f4d. 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/b5817959-6e97-4608-9046-ffac8910058a.json and https://artists.proofprofile.net/proofs/artist/b5817959-6e97-4608-9046-ffac8910058a.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 0x7e9a7386b312a5794ad6cb1063dcac2da68eb991aef5ec119a6e75fc36700762. 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/ES5161504285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023451f12b2671d61c5fbced630bfc9423b12d7e49461728c2ffaafad0507b5. 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/ES5161504286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c4e4233d3e7c1c4375e1f991df934025f851c27868fc00ed2a6b439addca36. 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/ES5161504287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3b10853fe6531faa2f41e95e69911cbf25714db014d9edc610827c2f270a05. 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/ES5161504289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9641122b9b62bc6fbb8432d5a0e2f90d5399515a70688dff541751a76928f6c8. 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/ES5161504290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b375f830d9bc0f4379e1bb03b51667545cda71d94a838609d22058e87b6210. 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/ES5161504291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a6f94cea94035ad6d831f0dceeb303ef959071a7348c2cc8b5e587431d3471. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5161504295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f4d4e7aaaaa3efc73bf95bcf9436787c1d34e889b69c168b6c715eb122d9b1. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:47Z), 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/ES5161504288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfb64c1d34e475c18fad5b5a97d20eaa4c7198ef0497615aa2beff19d6c4539. 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/ES5150801033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1c2abe3dec16625a172bc09e9c5efff3178bb38f9ca79f567cf7abe67cd3c6. 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/ES5150801034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aef764a0809a388f4f88703ce5c02dec4f645915769f89acafd4c1bbda1ae76. 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/ES5150801035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c87f3eaf67dbaa08fc52fe69cb2835af9bfe529e628391d2ea653e3d7029a6. 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/ES5150801036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a678db0d2927fe73112074717dacb5e2b2ccd569a136cdb14011e0d33c54f. 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/ES5150801038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c9d8f4f90fc9cd680fdd460ca20f5fe2b5c43cc08dd7d21b57aff90f733b9b. 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/ES5150801041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeefbc6c3fe9e47242feadb4ab257c8f14b373fbb8c587cb4db628ccc431c75. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:01:18Z), 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/ES5150801037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e84750fa26a75d309d54b6e0b83c456a8ca2e98759627010b9a43acef789e2e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:05Z), 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/ES5150801039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf614529de36e3586462feba391e509180e3489c47cb6ac50bab3964b8b2e94b9. 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/ES7490600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ab200f78a30f4724d2363cc5775f0e483f73fc7fb79496e555442f7cf06d6a. 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/ES7490600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ccaa3a7f1439f0a7a8bf1b331cb96cebdedc3a964dbbf83ee4c1af4bb91781. 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/ES7490600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656f02d8b25689ba11e084246c8a12cedba4a2a44b98ee03b47e3e64d4722af9. 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/ES7490600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbffc4022849d8823dbfbb3721cba0249b1bf3120d9dcef99bcf6d5fa92a0fe8. 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/ES7490600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b65f95174e97659e1b1bfbde39e57abee0592f7306c209b2873db8d93068f72. 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/ES7490600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6644328d35638bb93cf51b05a13429beaa3167b25cd9401626039e00c0d1efd. 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/ES7490600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9dc5bb61ba76b7fe1a1029570a6d501fc1f4ba04dc297688ec9faaf3ee5096. 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/ES7490600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a8f7b30ae869a1772599151843eb4cc3b48e6e2ac53de01832b32560a4e0ac. 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/ES7490600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95a5c4ec8188a1e99069ffd62a7e187f0f10427445910d716e71d93d44e5fa3. 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/ES7490600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d9eddff17f168c94fe32e9046b72d29c905b0c42bbc58be21ba6796354b0a4. 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/ES7490600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8947c1a2432cbf3554de0f59cdf7fbd79ca64c94a746de579cf18547fa8efd45. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ES7490600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4e63ade26ff221a4bf52627390c578bc27209e5da0ad93c9d987e835bcdc6e. 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/ES5161704403.
Andalucia Canta y Baila al Son de la Rumba Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecee3dc623ebb2eb1f66a4a72213c4692f35af56977d35ad2a86a0bde04e81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLZ542301810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4319644bd10a6f93b0559f318ff40b8f810d6141b2ff3e200ff633938d28213e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5152400550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085ad9ab2d2f9c269afcb136c70ed7f94cfee5ad3c0ce60e5d6fe3b2934c44c8. 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/ES5152400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13677521228cfce84a9a0705ff91adb65b9c1fd46bfed7d10b4df3c9dbc80ee6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ES5152400607.
Andalucia Canta y Baila al Son de la Rumba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b765a7dfb91ab967f02c48592a15d874701eb4f5167986ff060f93fd95c2a3. 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/ES5160600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e564b0e5f41648be7e76c1ece6ecf0e1fc121e76b23302a94d148a043ace3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5160700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92bf9bbaeca14393c30ae0a71f26663eab892e57ff8c683daf0cfece4327752. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5160700867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad63e63baf35b526e5f76f733fcdac870f8467d5f4d0b543c9ae91d2aed98c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5161303948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13677521228cfce84a9a0705ff91adb65b9c1fd46bfed7d10b4df3c9dbc80ee6. 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/ES5152400607.
Andalucia Canta y Baila al Son de la Rumba Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a91f9de5644fcbc4929630ced1e72ea9604fb59fcd01d90dcd5c1189f5fc910. 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/ES5161604362.
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