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 0x785d88648d26f5e58940af9929f00c2cee545ca40ca3b2c31ec136ce9ae12bf8. 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/f54c1dd5-f84a-4e6d-a721-23529d6124ac.json and https://artists.proofprofile.net/proofs/artist/f54c1dd5-f84a-4e6d-a721-23529d6124ac.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 0x26ffc2900f23698c762f94152d3cdfd00b252a841a8e80df9601ef1d7563038f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR6V81812406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d26b1ace9b9da2513664fe8cc44cfd282b35e50739f8fb20c9432d9f0cf79a8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR10S1478714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0e8d525f3efced785c95710b15992a7c3f6369e16f398e76028d21914f734. 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/FR0U91501732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0caf4a2bf1d91508c87cd4ce4142243e267fb1f2adafcd7bdbd77d0fbf1fcc. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR0U91601616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5ec384dd9879ba82c3113ff93a896a70bebe58ac361a7c9b50170ff69c8fc5. 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/FRXZI1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46186e7d72fec5f263efedd3ec29d270e06e52ff99994063c03513855e83175. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FRXZI2001340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab3468deb8eb48e64ebfdb7e13657f8ee43808fa1906a6874af3476a4a5572. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAGR2208837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61987a08b30013e79a4c49c05ccb00b66cc669199eccb187a09434167f59925b. 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/FR4HD2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11badc6078f4c21eafd559311eee1f81c68960552062dd239a372d2a0d3aefb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR82S2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fd90698bfe3537128a4e5c0cc813f613d8afeb10d147fc9b8ab92c521bcbf5. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/FR82S2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fae1d221ac7ce9604cfe7e93794a9ccedcb36160835842a679c29bc7b6eb19. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FR82S2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40e09d40dda874eddd3866cd0be25a868a796e25949cd77542d3f525ce38bc5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR82S2500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e62bf78f9b0b9b1b1def21b62d748480c7c4e11e0eccedefae1121029d779b. 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/FR82S2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995af0867cee23481dadfdaa65e69d5d724e56704c2fe3fc066e39e7979c3458. 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/FR82S2500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6299135aa5594704024d97f59ccdc9b303229205b55fc74ad3f325899f395c30. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FR82S2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf412823672650fad35f4cae8a16af66b8b559993e9a773b44fb01fff1681bb1e. 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/FR82S2500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced2aea6161cbd7776ac140a1d695a1f1d8fdab614cd818e831671227c89b2cd. 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/FR82S2500087.
Le Grand Méchant Zouk : Sonjé PSE (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5cb9f9fdb41be6db94c3d4d88b5b9ccf88626ee1a0b5140eea9da205f2458. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/FRXZI2000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a46040e8475749b8ff673528c77301a31d687d61123559743d3b59d3ae19ea. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRXZI2000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6cad805fa87118d2fd0417cd8618b7f812cca561d936b34e41307f7b81378a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRXZI2000450.