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 0x8e3ec2194daceb6671ee4e6e96a10d58079bcaacc6cf75ca98ad466a092260cb. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/058291a7-a305-45fa-8f8f-4a1d5bc7f283.json and https://artists.proofprofile.net/proofs/artist/058291a7-a305-45fa-8f8f-4a1d5bc7f283.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 0xea034ec1fa6b6fd2b612a9c66602f7492b34ea0947b86fecdf179b74a26cf462. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACW1762894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9facf02482a83141d7b48fd47a6a5fba169d159da996dafdb4b4e1b90a8a0b67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACS1643320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a68c68f05865bc70ebb2ea22bd4a60e6467e444c1981985218a86d90c9e66e9. 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/US53Q1200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7122b7eb1d758679b5c680dd4e334c6b932c1b8feb744bac5a17f04767e39b3f. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/US53Q1200081.
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 0xf542994637899b394c4b9f0bcde6fc4869d27441ebba2783b76fac61a305db43. 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/US53Q1200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad8b0528d13d5087a00561a27ca65ea7c6b39c501bbed2f081327b7a9b8513. 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/USA2P1297826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c0d3d44fb032d77eafd7890a822e732f5b07d8fc2830c631356ff32d671a86. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USA2P1297825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23ea38ce6a90d1ed08f994b2486ec388f4ac01fcc785ccf5d018b234fb5e66b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USQY51490324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01befeb512129adf3ed4c0320b437d5a07fce143d3881d77402d76e7e9ef478d. 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/USQY51490325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a87e820270c008f00ef583e5c3d4bf18e3925cb600978fa5c0891faf60fddd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQY51490330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf347b6f3414683fe865c9faa1908cc39dbe2fcd675f85dfda71916c4315f4295. 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/USQY51490333.
We Can Make It: Ordeal Erasure Remixes & Outtakes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a14fcce290afea08e96109d862ab715a8efe36e1eec914b4a72033a5561b4. 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/FR2X42113297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44fb30a2a792ab1ae71083c801ab6bdb3e51f55a82e0d55e2b77d87fe9526a5. 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/FR59R2136538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144344ea685f315762704e466cb0645dfca31351f4ef3cc222965c33ee5287a4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X42113298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14baf57b748caa3ce7ebe807f10ef473e446a131bb83e6feecfc94e8c04596d7. 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/USCGJ1844234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba392d759135eea5a426c04f07cab683caf922d47521e49b3dda0e3891a44b3b. 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/GBARL1500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055ea1e1df9253180094c1e139193e59db5b36c694a6f5b819384f55ba5564aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBARL1500162.
The Future Sounds of North America Volume II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c9eb3a5c19ecefabe00269395fb2129a6c14554d879618bfde289bc19b6861. 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/QMFMG1330652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e5e7a2517631180eeb6e087b9c8a7ecf5f84d6be28ddd3b0b2e5d038f7600f. 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/FRX872191128.