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 0x737088b4f3a938ec6ad1ac538794325a6390e18ca0c31f1202bf41ad72d30145. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75412b56-3499-40f0-b055-360751620d54.json and https://artists.proofprofile.net/proofs/artist/75412b56-3499-40f0-b055-360751620d54.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 0xc52c69a381807785109a1944ac8f9d536ba577f82e9db43219b5939f16d752dc. 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/COSO10600528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ac9dfc95a5278761663b9861c30130fb82a2306014f5ff256087ee515d916f. 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/COSO10600529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c233ad393f53feb6b92b70ef63ae220bac4e12e8bea752b3a85b75d2a5a40. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/COSO10600532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa414bb50c3d04a0ec81ce6597bc402aa197dae5eaf29461c693a04ebcddd21a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:25Z), 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/COSO10600533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a08e26410af633005ae388cd1a2c99ec1bd0232acad1d17ce0da53c859e122. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/COSO10600537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0bf2e2b9788d46c62fbd2967491eca3e2fa92bc1529600ef1ff021e4c3b6ed. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/COSO10700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64eb9377a1d2cc94dc772909fadb37c28b5702913204a5117845345e21a598b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:16:29Z), 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/COSO10700200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df049ae9cb880d3d5521099b985df9f00d4379b55eadd858d9aa4610ad1a1c9. 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/COSO10700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c58b7919eceac23a6e4b13dc4f90c36e966896bd22efd5dd97f290f7f2ccf4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/COSO10700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb97d619449eba1299ddb35ed6b78c61b2ee9270b446d9d1bc14292cfa70080. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COSO10900840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01a3d9280b844bd5740e1e4b53141a1cccfe817842e6195045ca521da6feb34. 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/COSO10900845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0970b3521cf495b77f2e66254b7ab0510d58243d54fa96dd3290314f71b723f. 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/COSO10900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d2f1596b68b4580f460424a707ae7b559569b83162d980c63af48467b3f45. 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/COSO10900849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe908bf149527eb8be3580462d0d465230c73b58fb1bcef0de924522641d6d20a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:22Z), 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/COSO10900850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13019594f65f603e3164d88b98c51a33bdd543bc166f72468da8a85a32ed1fe5. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:12Z), 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/COSO10900844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbb9525a468e786ebcc041ca07ac8cd3c901789a4b53ca208afcbe162b323ae. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/COSO10900842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f4a1e485e34d59d81655156cfd50fb6cc89378f464436af2409f8acd18b60. 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/COSO11400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba9a3a3b792f0a0038b82cd8f2bd6aac5cec96990bdf02b931dc6ba1aed6e9c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:34Z), 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/COSO11400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414de2714fb3a9b9ee3a2cb767d5cc656160eecc0cbe85e95d25e5da03580259. 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/COSO11400063.
La Virgen del Carmen (feat. Beto Zabaleta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f1b292713c0caeb7c79a9ef1d8fcd463b6c40f2376ea4d2cf43e280687852d. 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/COSO11500698.
La Herencia (feat. Andrés Alfonso Zuleta, Kbeto Zuleta & Hector Zuleta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d4673de8e3bfecb0b3a07b50ab0b3fdc10e7098e85d58e0b8361112e8d9c1. 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/COSO11500715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476b4d7238cf822aa6993a2a55e2918bcf8cee3a8bf119a7d401809868ebee6. 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/COSO11500692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebefe11cf08c3f32e47bec6f66fed70f2e6fe67caf342e73513d44b2970bb66. 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/COSO11500709.
La Negra De Felipe (feat. Alfredo Gutiérrez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ba0111e8ac01f3c6c65bc6d8da1467498b3e03a1205d70136ae45bad21c59e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:33:54Z), 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/COSO11500702.
La Creciente Del Cesar (feat. Sílvio Brito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8e3db0a7a318b051c27fa4b422bbfd6fc07999cf5e2d89dadd23b182532ec. 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/COSO11500700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce14a4393e05c70583fd0629698e3a9e860be40395d84912571388192f02afe. 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/COSO11500695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a43c8d67b1706551918bc9391af609751338ab96f0c18ae13ff71d5262df1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/COSO11500716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9604979340bf4deca10085f3c085226ee8738c1063400fca84e5d07cf30732e. 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/COSO11500714.
Medley El Chevrolito/ El Mejoral/ Improvisación de Versos (feat. Farid Ortíz, Sílvio Brito & Ivan Zuleta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977cc1e37f48f2ec97472b54d26a16666a520b8f1f7503fa453f18fe723ceaa. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:44Z), 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/COSO11600028.
La Ceiba De Villanueva (feat. Jorge Celedón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5ee7d3f6798738eb0e927c4254750e657c50c55f0a247df8e140eb8b30be1b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/COSO11600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f05b25bd897e3a4118e959f73294e29a524558a8c4acc2de2741a0dad02b1c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/COSO11500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c16ab9aa283b37528313bac552e53d5452f0047c9826d6c7feda57363e43e0. 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/QZGLM2019473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc580c4fa1b33c9fc771cb77ceef55bd31e0a895060b1722afc64e58e17ff258. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMBZ92029363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f65ebef35ceaa7da3d01908a91061f369db41c9184906ebe2ed213e0bf4f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZZOPM2115961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb298b935f75b34f01bfd18b9ab0d7529705b8d3087b1bad2b17035308dd7c765. 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/QZN882354257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a444acd33bd9782f3f3b07cd47efb03f1cf81c6aaee2b3fbf0a235e41cc391a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/COC011530569.
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 0x52cd2f2d9d98d70aeb7b06e11fcc1bebbbc1ad58e4059f753faec98fa116c2d0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US7VG1754119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3848cdb4650279cf4a8e98a97bc056aa8c2221249811b19c35b2b973cb7c80. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZHZ51988906.