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 0xbb0c15a498ec0e50a6537c56ef422fac385d851b41fb55f3a7ba8a99538b102b. 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/663a3e3c-7534-4488-89c1-1d7a61d9de66.json and https://artists.proofprofile.net/proofs/artist/663a3e3c-7534-4488-89c1-1d7a61d9de66.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 0x1c6b630f8359d31a21afb033a8b8be2286b28150f1a4abd032718721d5425ebb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1683161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a241fb9b41e61af0f1fd10303837aa888e5dfded622c8dd3aa059923fa1ba8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W11802554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b79d70ba1d3ed78a9351036917e4ff74f85e185327ac51cea5eac15f7b8a6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR9W11802559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4ffb12829a264bc0d4e8d014df1291b08995bd082cae509579c87950265ca1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W11802560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa14bd5d29ff7a9c6d2637503f4394550d34a73cbaaa3bfe0ee81dd0e328828. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FR9W11802561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e36947666b4af76760a5dc3855286c0fcc3783a35aee13f2268e9483581b63. 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/FR9W11802562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1159af5217b94b5905dbdc00c774f0e2e17c4660ccac97212dd6d2c1ad8cc97. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR9W11802564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eacb9f1e9d5c32faa0b6b0beb329b14df8a2cf6a06107551bf190cb526528ec. 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/FR9W11803238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce99221c1b6e4cc53952c0c397f8d6bf21c5451d9e3c065dae7e548f7ec2b0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W11828027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6e6ec4357434e38c16a25dd29c66fd3887c380d821d0eb8b05eee643b3ece1. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/FR9W11730758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65df0f2dbe36781ba7ee0491492abbda4d6b0f490a367359ca5ace5f990332a. 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/FR9W11626606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450325f371754c1a7e0b2253e99daefc85762dc96d9a37ab65de7fb692505367. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRPZ92002930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a695f38096d673995ede2ce66c312c2cff3842b5e1388fa589847ec027b96. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRPZ92002950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47181b63ea34b9730a02770d2b1bb0dd5adbc6ff9bb018f38ea5c00050f2c1b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FRPZ92002970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26c96d8ef43a9ed0d0d36e7140c12a2402d8359616cbf405d721670b4f33062. 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/FRPZ92002980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f7a97ce7ccaf237fd390e54566bda663193e6e77acacfe27f5263d51d7833. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRPZ92002990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9dccd785d48cd567924eaf4c079d7b9a12eeb6241fbfb7ca0d8e914061a22. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRPZ92003050.
Les Rascals (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20190a8a33a3a64cd4752d49d5b133589cd9e547cbb26bb071db8d89262f6a91. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FRDSP2304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43741644673ff3ce752b2f5d22b07d21b313acbf02cb7f90413a0fdfef4148c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRPZ92204020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d13b4475a77f078df43449d5979a89c1b94a116bb9c8cb8fbc6194277bd5092. 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/FRPZ92204040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61b2857f77e11f0f204c64b0501c6a54c6ec464c7f8e96e3b218bff2d4ea215. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FRPZ92204050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6249a4b878881ffa4f5dbae8d017df526b45d68bd6fa2bfce3a5ce11ece0d4. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FRPZ92204070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f112806416174202a0a3b3f6befbc3bb506fa10e4d9c076932becaac0224bb. 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/FRPZ92204080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfd3415d0d9eccf3cbfd59b4c83509cf6faf2e829d8de0a81ed725da184795a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRPZ92204090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef4c5c4aca3de24fb36dace880ec89b7ad33b6b76fe896308f812ec0dd19458. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRPZ92204100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c7df486ce02aa3871510f86ea68d4961d1f41625346b389c23f3ff53ec0d8e. 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/FR8MA2300300.