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 0x4c0b7a2cc578823d567d2f887a6697cab1fe1acc7efa1f07d07c185c9488df28. 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/3625e17e-13a4-4683-80af-648f141d6564.json and https://artists.proofprofile.net/proofs/artist/3625e17e-13a4-4683-80af-648f141d6564.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 0x3ae70cddc2445536fdc9d78707d783626cba87753beca056c99a30c455a227a4. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/PYA452300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c0029c4f3ee66d4d5b73102b9596f86adfeca44cb180f59560f2445e4817db. 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/PYA452300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99f87f6a617644f8719287d782689d509bdfc52982fe40bde3252676f21b0a8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5752215450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98593b502dde5955bfce806a2ab0c8cc7916fed95c6e61cb2f7f8a0711bbf22. 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/SE5752215454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93908691e4e852b632df8e7f4a77e99922344ae5a875f75366c82e68e5e33561. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/SE5752215457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa992003f58fd945af42c9df7750119e8d23b42af4c30f99261029c342891b3b0. 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/SE5752215459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887eaf7e9ae7a1dbd69da3cd5a2b35abba31d66025cf2ba430b222c2a2a1a2bd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5752215461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab90ecf732220e8b404eb635890e05f0c79591cbdde670efc0e25fd1de9ccfb. 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/SE5752215463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f146f2889977ba64dc91b1763944fb846554cc1179ac80c8c07ed51c7428f7. 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/SE5752330720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2458d162a6a85c6e490507d39da98edfc2658e74ebc31e9c844eec18d81cea. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE5752330723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c8e18e9ae4b5937b2dccbc62323a264cfce58de17b145ddfeefca961e5f22a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/SE5752330724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d00357ab44237cca8424cb62df99b93905287afc4d9f71b624445da96f3bfed. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5752330725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccec010a116ab1b9b3654d312adcfa3d7d5de2f3fac7c994d9272613efb7eb1. 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/SE5752330726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068864d8ac470e64b31e16ae5120558c5c07ef1762df429bbc522addb6a8e953. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE5752330728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d6d747693fa90a244950c8b7cee48bb48863e582f443be61b448fb1af34a39. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5752330729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b22dfcbdb4975b0a7cc2ee20f5b4fdfd0549e748c09610807b4ea567f083f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE5752330732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ef7191c5f023e1a8e9ffbe69ddf10bcf629500bf12f8fa099ec6b75d968da. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5752330734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00d9f37e5c65927d0e4f0ca4080a7c0371964713a7eb3a962d8dd74af85613a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE6A92389574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a40ca14a5030cbf0defbb753b7b5e03c3b18dc0a553a5a41006556c11ed72. 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/QZHN62427101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e0a7738ad7922a0611424a2ba481b5be34fd9007e4b4da72c6683996195ced. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZHN62427106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773eb44dded78695d738c236f44e949d2aed245e2c234a8d93b110e8078894a1. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZHN62427108.
La Celosa / Para Poder Llegar a Ti / Si Ya No Te Intereso - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f0a77ed9397ad4d32fff9649127ef8d233c292a4ac52be0cebec74ee56dd9. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QZHN62427110.
Ni en Defensa Propia / La Venia Bendita / Quién Pierde Más - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4b34e2d6b535cb04f6c8b4b7264fb178169e32897264becaab6d41869b3c4a. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QZHN62427111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd4e9d89f1ce353ee6c61c4d72b1fc6257349e7228e445d9ef577a7349d4f6. 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/QZHN62427113.
Puño de Tierra / Yo Nací para Quererte / Te Metiste / Que Sera - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505e8e8e2a9c377130a6a4624a24c78216bbfa9ea19e0445da878fbbe458ebb3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN62427115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb064398981751d1b843989a48e560d3190d0d8e442bf9fd21d41ad36ea34a7d0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZNJX2522921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26738de3bedecafc251bb02e89cdc4c9912880328a98873bb025df823b24e5e5. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJX2522922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188195c70e2933c7a6361e05a07e2c36e0de92f6074386b257778cf33529482. 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/QZNJX2522924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b2873a87fe56edcc1b11aa54a9a74ad5443c93ff80e2b01702aa6cf7c0b80. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNJX2522927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9addc6a7b71a078907264321cff64b29e28b6e74d06204d522b1aee83580e1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJX2522929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebadf534225d617bf94e7c8a50c1b3f1afc435d9db87b6507b3d9ba17d8d1bc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZNJX2522931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb629d358e7e645abc72cd4b316e2c65cd0464c90c4dc05339f94016900315743. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJX2522933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa20849ab5aa55f04302cf1c39690f3abf16d01e323ecef59866f71fb3e2673c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNJX2522935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e5a3d3b90196572e3c6a5ae3c8418f4aa1e1bffea46a2f5df46cd041616724. 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/QZNJX2522936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2fdc3fd856e5a57ff1693d330afd88dba4d2be7446a04e40bf264a7c2a3015. 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/QZGLS2450000.