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 0x82589f642eb71fb9f7bb6f3ff57948c0e0216e59a8b1f891401b1f9870588ddb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47b394a3-5b9f-4822-9eaa-562f324c289e.json and https://artists.proofprofile.net/proofs/artist/47b394a3-5b9f-4822-9eaa-562f324c289e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f3885a4618476e0edd22ed5a395866cb52e052d44047e0c94b7957fb25efa7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UAAO11300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa723d64b2c70e880c32974a5a2e2b028a1425cea770cc9df1464babb9f251d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLG251200634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fb1fe46d4c30530843b9d3941dcbb6db05bd146b42ad4fcec2fde5ed19811. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLG251200635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5fea5c3cb63f5924dbf61ff08f169ad57c952ada293f528db789f208ed9d0d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLG251200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ecb0837b6d7318002a159073cb2be2590d620d7a2cf9d848344a40d52a878. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UAAO11400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8add9786e237fccd0fea3e63c4816404745ee18015000ea02a7baeba7966cbd. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UAAO11400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd92330be431e66fbf915fa082cff03069c6dde1c475da597add087f5f6f95f2. 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/UAAO11400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01d0ef39845bf80c42d23907399c5294798aff6a21c8f0e2c988ec65058d5de. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UAAO11400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff9224e4c6bb294fe384980ceea645fad27140148c4c23935ae6ff2e9bf27a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UAAO11500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cfdeb648174fa6e36af905e63e25b5cd5074d3340d69615a11e93370c05578. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/PLG251500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac4cbf796cdcee08aed7e380b2df2bade5721da49bd46edf4beca4c3172ee0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/UAAO11500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6fc6e37b41b96887922449b57cbd2fc65bfef4c40dc74bfb40df15462d4c4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UAAO11800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65d8de16a7f1ee5291b48441eb56b3bf993a88e3599d5b294a4ee134133cab7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UAAO11800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50a9084cb6c4e8f2d316b0e4c566aaaa457eb8cc55b026f6d40d82cceb04f4b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UAAO11900300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f41c143e9046838318a72f57c80f76187dcec1efe8765740265aa7990642dc. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UAAO11900864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713e0017d53dc3c2cbb7faa756291f83a2b70de6a2ba067ab2caf86abd2843ca. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UAAO11901144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235323e7ea68a7d1687f11319c500fb1c72dc29f48867a846c70783f5badc7b0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UAAO11901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129c43f6a7bf32427ac71127c8b2bf13388fa40e1c6dcf9dcb998c82a6748dc6. 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/PL2DY2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df14f3fdd20fbd0426b1fc97f3259e059c15b101a0ae15536b878cb02f4c412. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PL2DY2400989.