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 0xff83bf92c2035a6311895dc7690e940a10abfc944939d7480c24cf78eeb83d8a. 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/b9a40901-8431-4dae-a9d4-a844cf1acc6e.json and https://artists.proofprofile.net/proofs/artist/b9a40901-8431-4dae-a9d4-a844cf1acc6e.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 0xf0b798426fb102650b097f866e2af17533f744eee14041c494dccaad68e102dc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ESA011844518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47db1c4d4666260df6aebbc4ebce534db3d601f2130d3441f7490b4c5c0f084f. 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/ESA011844484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6a21753b391c0c5ef58d49eb93d02c1105a9b61aff8043bde0191a6e39e09. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:12Z), 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/USA561368697.
Historia Musical de las Hermanas Calle: 40 Éxitos Rancheras y Corridos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d827cd60bc2349f7489dd30f55c18ded78a117c0bdd4a3656c8c5da2f426ade. 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/COF010007345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12b0cf69b599e69dcd7129f0315c57df240090dbcbafc1c4b32565078a4cbfc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:09Z), 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/COF010007352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82748d59eda82063ea622f639dfb445d4e700d93a09ee4faf2bbc7d2586e2ede. 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/ESA011844476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0bd631ac03b388d8c5df79fc70a945af82d34c0534924ce3c699590986a19. 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/ESA011844478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537119c163bd5d7d444a6d5ba0a21c620c37fc1b2cf6bbdf3a44e87b02a68655. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:46Z), 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/ESA011844482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47db1c4d4666260df6aebbc4ebce534db3d601f2130d3441f7490b4c5c0f084f. 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/ESA011844484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b0ddab9b4fee4e24447089766854ea27138d3624792bb14fe3768fcabeebd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ESA011844485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fbef7bc956fe74995728aae0c1fa2c7be8eb843dddbccfe1e7836558106732. 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/ESA011844487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16d5207959a0b29a761eb080adc792d171948c8da8b2364ff8da806b746b5d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ESA011844488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea8ae3561c5f78b9e486be2f8acb9fa96e0c918bf983d1469f5a30ecf9e2b3e. 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/ESA011844489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381a008bbbd83cc2d70711190b1a734676ad235f7a7b14666b7f64838349370f. 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/ESA011844473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db425e9e2759648d59931f1a8748797b89a9dde1c215f3b8c1b165adfecd4b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ESA011844475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef02ddaa5c473bd2fa1bf2f3f97a331a868422da97cdcbef5b07a778d76468. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:10:38Z), 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/USCGH2098695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9dd80dbb860ce656e77fa151e5859fbb7bcc44b4c230862a67f4a7e40ce8fa. 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/USCGH2098698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d40ed95290f01afb0c3d3be295ba4dd5418617a385a6eec56f16aed93dfc4. 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/ESA012038374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf7096e9a5f03bb6e1d366f7b0802da7e09c9c0b1996623d9ff0e296461bb4. 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/ESA012038384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9098712b39c0ef08503d61015ac71dfd717fee4498d4b3159cfdc8582fcd6f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ESA012038386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096182f2152d5b3a6652fe56af439d4b86045edde672573d731a6c3c104e25a. 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/ESA012038387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9aaef98df8d051b2b52f524b76246d5eed36e075cf30d80547b43a419f4ff5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:24Z), 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/ESA012038395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514b2ad03774cd22abec4476f301cffde437b9c06d200e774a0478f5a6430f0d. 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/ESA012038398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c2f56edba67e1299371eadfcd3636c225415a4ff8be1f3969c3f06f46eb29. 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/ESA012038377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8191c8374e4403ae13a8a1f4a7acb9029f9da2ab85dfe5dff5a7d6ec48e4a2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:54Z), 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/ESA011844872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14d8e04e4f34e1fff74e6df5dcf90f4f33b986295dff189a812122d8859944a. 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/ESA011844886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ac400c150c794b28f8ac3e6943beefd7af1bc81d3246f259d6aac3b5409db. 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/ESA011846665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6068681357f4c7972db6fd7b5cfe81b846abd9e2c6fde22d65c3ea50de4116a5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA561368640.