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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78e6a075d19a4286cdf8970bf7ab8bd0d5c53aaa450f93d5419c2a3d2d70b26. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e004215c-bc70-4290-8623-3069956fe8c9.json and https://artists.proofprofile.net/proofs/artist/e004215c-bc70-4290-8623-3069956fe8c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clairières dans le Ciel (feat. L'Ensemble Hymne au Soleil, le Choeur National de Lettonie)
Deadjazz (Plays The Music of the Grateful Dead)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf9deeca7dc503aea2bd935ba175858bd087a3261b4c51cbc822e9beca65ee4. 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/FR83J2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f1d66be911f8c251a2dcdc35d28bfa81a7f24706be4a29b87334502b382b89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR83J2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349382bbb27272777a8a12d6c9bf5e193e2206e17cccce403fb897ce6ee5261. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR83J2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac64ba9853e65982378065b7de7009988c52ba99fbf8eaaa4decce02bb25b5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR83J2300130.
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 0x8d7016a5cb4296c1e97f8383277840fb4c3da1e8bf9a9e6c4e6f17f7701445f8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR83J2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe621b3434416452c7912bdb87c4f56fbed46aaeb9d1e1ed8a3bb02919a748706. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR83J2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc658efb98a92194c5643fc56c9a7ddfeee9cd84eda2f6c78f001b0d2b113d219. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR83J2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5843010ac9dd282666ebdc3adfd8c0939349e2d5cc4b616cda04424c6497d18. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR83J2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae838299f340eae90643dec2c4bb672ea48642d277125ff149801f4f2f90148. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR83J2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f91ce6b4d8006feec302c15f048ba4c62828085945e1899b9ac387b1f2b0e. 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/FR83J2100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d3b4b74267706ce24c33b8d12b09289d79b93c78695f15f162d1064a59a095. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR83J2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57280302ba98ac8b499720e796cb9194a59c608fd3bd587e51e159aa46346863. 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/FR83J2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477cf74b5049e7c8af6535ca824153a3213d4198a3fb991118ec8dc30d04b25. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR83J2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7c78135ba49552533579e57674e34b07098af9f02553e97df1e3243f87575. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR0GI1300057.