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 0x5a81655d451ebf7244f46b105f70fad85bbbc7133d2763c75a2ae17c124bdcbd. 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/4225ceac-9d1f-4f7e-8f53-f632ea3320cd.json and https://artists.proofprofile.net/proofs/artist/4225ceac-9d1f-4f7e-8f53-f632ea3320cd.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 0x47f99fed1821aeb2dea89b615119140aeddf8a543ec41521164e816b1230669a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6J2003002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e7af4c8bcaa32a073fe04ff858026b4565b8168271b7711ed15cbe0b0645e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ32156084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9c18e357ed732ee74bd8e44fb02465c0c185955f6a3c1b85b4a26d33b5bebb. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZES82139909.
ceci n'est pas une intro : " jeudi noir "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320bd5e178fcee37fea0a3efc7472b225fa0c059e56a9263aa942f87c4653a08. Chain 2 (Bitcoin): anchored in block 957846 (2026-07-13T10:25:43Z), 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/QZRP52154210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0373b0e51c0986fde7cf64e705700138fbb796bc1a4b69ee3f767e83e70067. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZRP52154211.
unmastered.mp3 : " hrira o chwiya del bid "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057203e5d9236146745d555aa12b595c06ca87880b8687ca70268c7042d11024. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZRP52154212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c6d1b6c71f1370461c5fadb2f6e5e39a42414732e945786d4f0b9032c3292. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZRP52154213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364bf8cbbc3ed3e2418b263bb406a518edc9cf2b1579cd3d7e1c56e5abaa77e8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZRP52154214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd452c419d7624196c7533eae9a058dd89fcc25cface355e2b2dfe0a429541f5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZRP52154216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722b481613f01202a625dd0ca4fd82382396e1a65811c073d38a39bbd47f562c. 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/QZRP52154219.
outro : (09.12.2021) [play me if you are real]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5c57a1057a8245636ba945b4a9ad9639bbe170ef5ec4e93e5c5c348881eec. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZRP52154222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b0b0eed479733dbc05da990d7d8dc139ff8b406b8eb4b81797798a20c35dc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFZ42266292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5fc174baa12f51782b996f87b6a82e3b0b0358a0cd52d639c69937050832cb. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZPLR2265791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979b6289e2a21c850bbf628e4b7fcdee11d09dccbd2c22af380bae2a8d8ee148. 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/QZPLR2265792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac83c05bbc2b2ccaf51e4e1fcbb851fcc19f2a6b88c8651a133203593cea5d. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZPLR2265794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cafa4d88a0343a0dbf5b4a6353c38199fce0c5b96176c852ce42e6cb9edf5c. 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/QZPLR2265797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74336987dfed6e0e51f0000dd882f5813a93999d312dd248aebdedf0e5ddc297. 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/QZPLR2265799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e7cf4c4f7f71a40b5ef65bcdb9d6b85d1f6d411fcd2166ff2b075be1cc86d9. 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/QZPLR2265800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90e23bbc9fa83b51cc56e753cfeb139bc333be8c1a2d6623e405ef89d977b49. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHN72333788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cf09053075d8cfc29ff49945a74239883bdce5c6b69b69afa4249b01a79967. 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/QZHNA2363921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aa6de1964b56c757ecceea0414970cdbeb515f8bf13c34c6ba135e0c785976. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHN42373015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11744626b472f22e81837bd67719e4a8ad14f3c4aeb3b9387f9718f800f1871d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN52382914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78798cbbbae2356e86ebf391f5d5631b144e90e9af710d34084057b90de3f021. 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/QZHN82336851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832dd0aa16d9e9fb5402ae900120671e0ab115ab39ec90dd681900c53de7149. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/QZHN92388821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e13095bed3004eaa5f628f10524e36b4c572382a9e557bbecfed5a0ccbeba. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZHNA2363922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e85df4bfdd37efbce14abba8f027f33d923c9f2884c9357cdd935d0e50bef8. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZK6L2440841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced1b6cf2071c143d534977a347f174a4c24286565b524c9a2f49f860a2de57d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZNWT2422473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46b10830cb0eda0f2ab7642bfcdfa2e0df200da3d5c558830fd253fec889e0. 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/QZDA52587510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc5b629cc2d5c739c7d7a9315f9c67b56ac92188956ff0f9139621c44f3136e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZES82542401.