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 0xa3320404eb0962419cd77d98f4fb721770b69c04c42fb40c06034e55300ce3ff. 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/91b13f5a-6412-4883-90ce-18da7122846e.json and https://artists.proofprofile.net/proofs/artist/91b13f5a-6412-4883-90ce-18da7122846e.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 0x105e446eb3e40ed0dc71d8ea05d29d55dc518bd8698425a0eb6890677b6be8b6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEEC31900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604d3e19656ea6791f6aec7b21615c05e250652d47264a909fd83a06c41f22a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEEC31900335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a949e982d20fa4f5d0e722318b4db94bf527c8aa11b0ceb345d22dfd002295. 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/DEEC31900336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec80f694e5535d289ae102daeb532d081aea64c3038a5c260786dba38496d1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEEC32000097.
Galakto - Alex From Tokyo & Neil Flynn Cocktail Garten Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d1847ac1ee6eceb1707482ba78d8a0569f8103bc9b3114e21d6380e9a619a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEEC32000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226eca87b27aea37410802e117e69975a53ebde9b2842492fd9dd40a27de2977. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEEC32000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7283e48ad0f823b899cc583b2378e72bac3ff9504254206fb666e168ee1cc342. 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/QZS632518020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54600e727880b7730bc1e82eb6877739c2d5646e0ffd44a44a4deb18bac41917. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZJRC2559865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd10808d95ef54a0d8ef4bd5519771e7e874754e45fba3de8386c883ec01357. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEXN92264417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1e4338301d18a7d1d15cb1d495fed59e58eed3a10bba08437b6ec4c21b86d4. 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/FRPDG2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed9995874cdd5c62321e429240e793cb45d085af8a6fb7720aef1534a41629. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLZJ2438453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f690f4d5cf5026dd0bc450249292397c3c36fa6ce6c11f269657770d85e12c. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FR3NP1400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffa8533d8eb867086dad6966a1f302c91c50af5312606d3c0bfc3337e7afa1. 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/FR3NP1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc24e79b156cd5f16a29b6193ee7162ca86388fe854932626e2de824089fba. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR3NP1400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5775fc29b2a7057e3a532180ca5e780d13a9c53bd465902e8639a31455ffd7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR3NP1400080.
Caminho De Dreyfus (Rebolledo Remix) (Adam Ten 303 Retouch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9580fd333e8ac17be0be2e83ea8968d08788e58f156693d2df97cbf59a31063. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2226321.
Anniversary Collection (by Stéphane Pompougnac, Charles Schillings & Ravin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4463540a7afb62921e7c42b8c920d9f0fbf4486fc2e437cb600218bd4b8f2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QMFME2175675.
Caminho De Dreyfus [Mixed] - Rebolledo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5964bc2432fb87c6402b4a6c1a90c6ec2ecf9e668a185f1b5e8a8b54817bde. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEU672100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad00000a59a6b4efbe6ab8d1eba42deda3b6b724588ee2a8b4ba9ebdb2cfe4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX2XW2100008.