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 0x7f5f2c3b1652d004c7981ae29359d255f56f1e2b90788aa475d3c56c924a8edd. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2814f9f3-ff62-4a32-a07e-93c59852d404.json and https://artists.proofprofile.net/proofs/artist/2814f9f3-ff62-4a32-a07e-93c59852d404.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 0x9633669a10b9e849130069fc912802f0833a8e53d638f0819ff4697fe5822712. 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/FRX080600437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed34f29027e57e61da6024a26af84ecebba5ac3acad589296004da8f3b6b9b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/FRX080600343.
Séries TV, L'intégrale (Bandes originales de séries télévisées)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778254c3b01b343af42458b14a01df9e19ddaf2f4fdbb4a0c71bf50b3c3c73b5. 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/FRX080600400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed34f29027e57e61da6024a26af84ecebba5ac3acad589296004da8f3b6b9b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX080600343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1054c1fca52e20f9927850a5d569284536e3bf6963506810888c69aa56e95b3e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX080600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633669a10b9e849130069fc912802f0833a8e53d638f0819ff4697fe5822712. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FRX080600437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b4c0b739cf2a6340365e1957afeceb4bae103d7a85fed2ead09b31ac6c910c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRX080600414.
Top séries 70's (Bandes originales de séries télévisées)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944c30282274bb345198309af1ad378d4110cbd98998febecfeaf45f5a01ae09. 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/FRX080600430.
Les meilleurs génériques de l'histoire de la télé, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc89ba27c3db55c4923ad130d910a6b1dbe9f4b028da2d38d8dcc2114833fcf. 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/FRX080600368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633669a10b9e849130069fc912802f0833a8e53d638f0819ff4697fe5822712. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX080600437.
Mes dessins animés préférés, l'intégrale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce5af1a6991e1ab8c25a577589fd7f1af1a7dee94d6abe79f63f85623b9983. 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/FRX080600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc89ba27c3db55c4923ad130d910a6b1dbe9f4b028da2d38d8dcc2114833fcf. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRX080600368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe91f3fada2adee93c36b3d7fea63e47fe075b2514b18b0baad36487bdc721f3. 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/FRX080600386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b7c7303118fdb78af3461f8694ad2fcfdef1cc7f547e185568561c2c0c0f02. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRX080600373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1054f4771660fc24cbf345bfcf2014f9e7b441da6f87b6f14097458875d9f01c. 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/FRX080600395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce5af1a6991e1ab8c25a577589fd7f1af1a7dee94d6abe79f63f85623b9983. 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/FRX080600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6196320eb15025d70cf0b1077b75fc980943090537f044335e4a2a1d8064ecc6. 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/FR8GV2100370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43443b5ff69bf90f4bec9afd666298655e7a7e45d6485504710f922a392770d5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX080600371.