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 0x27cd94133b6b05d4e5ba4a1c4876e0bed20d7ce4d3a4a03f35bb1a1b0e1947d0. 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/c400158e-70d3-40e3-8909-7618cd22ab25.json and https://artists.proofprofile.net/proofs/artist/c400158e-70d3-40e3-8909-7618cd22ab25.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 0xeba8b118046a88cee4c1a371ca8620635efcb2335adf3194675ad4f95396b1c9. 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/USA2P2034248.
Je Prendrai Le Romanée-Conti (Putain De Leroy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca634a458db3ff7ca49f1cf40a4ebabab159b75b2d0ce87eda3ca5da9e46620a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USA2P2034244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce70003b13e117a5fd0353ef8659120666a35a98487a64e6ce311561afc30c. 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/USA2P2034245.
Un Bordeaux Pré-Phylloxéra (Pour Le Riche Enculé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa342cb0a25bab434be7e4362413e778879291f21a6a90b768772dabfd400d013. 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/USA2P2034246.
Deux Fakes Jayers (Aussi Pour Le Riche Enculé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808a7a8ab9a1be7b092e13ed603432b8f52cdaa1313bed2dd4c30175c0c7ae29. 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/USA2P2034247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba8b118046a88cee4c1a371ca8620635efcb2335adf3194675ad4f95396b1c9. 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/USA2P2034248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d4e28a05579771dd4df80335f5dedd07f13e8542e80e87c56ea47c5208f8da. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2034249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe922335450ad80e9251e99185556cc5d1e3fa99d4ec7257de3447d6991c44. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2034250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca480a4d21a9b7f6c0a30273285bfa83c257bc419979dbc7ea6614f1267ecb5. 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/USA2P2034251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd8ac7a294f53b137fc4edf5770307e81a0a8402593104d0ecfb0f9f5e993a3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USA2P2034252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c561a3e18310f2741cfb0c5c7298e06fb65654cd27163a0d91a4d511d97638b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USA2P2034253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b406b3122596677be9cdbb1d0f6b65e81fd72cc2ecb209473aecba8d82e59. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2034254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544bec79828d9eb0b9e6a288ae14a9d512519719dedc683eb3ce8f12b3735e3e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2034255.
Hommage À La Vielle Garde (Pour Lafarge Et Rinaldi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d1319a6928a93fdc676e25e7adbbf6796575329a04676ac28bfb556cfa7103. 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/USA2P2034256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b75e8262088f29bcd1bc8b36be7865283c0a10a72c3916cc83f63893b641e19. 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/USA2B2319289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471db8710b546a720f7499943709763f4183b32c5e81a13b4428abdccde95ec. 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/USA2B2319282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9eb65f8fe2e9e9a9d6432cd8070b0a38d85cbc85fc6700ac4153cf88f7794. 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/USA2B2319280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4545ed8724c2d2ea526e03d852577f16f7ae3c82843eb1caa58c6788fde8675b. 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/USA2B2318470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471db8710b546a720f7499943709763f4183b32c5e81a13b4428abdccde95ec. 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/USA2B2319282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95f20aa90e1e68ea31703463a7bcfaa71f1c246ae93f725047c24620fe35c9f. 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/USA2B2319283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad15a859120fd9bc18b6fb4aaf39885f16773102089e0aae48f9480a59af5b6f. 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/USA2B2319284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf124ebfa7dd483c698ff0d4257af02379e211d31fc0bf073749b44036d6591f4. 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/USA2B2319285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316fc3d844e9784ba4285f6219650c3d22b0fdd96f5e81102035076d8718a8f4. 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/USA2B2319286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a2a2af2faaeb0ea3907c9b2e033fcbcdb084beac739a8a08749a28275e32c6. 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/USA2B2319287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd50ac96afbe5449b463b034fed4e5c1e2ff5c5963f1a8184f65cf0bdc0168f. 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/USA2B2319288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdac255303c5dd790745b10735a6a9e75449ff14fed63738b0db8d28e35ae822. 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/USA2B2319290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f51a9385c8634c8e5d81b90f186dbceb70e064b57b1ac93d64575dc4608483. 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/USA2B2319291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef23a86001bfcc6b968af517c65e1d520feb31cc26ad0888ac4def5fb8bb53. 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/USA2B2319292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228b83cbaaba242eb6e72859cae515a413321c4e8e9eb83d2ec85c1c34d9b138. 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/USA2B2319293.