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 0x2b464b0edf8e97d864e36213af234940f92049a39aebf1c71f0736a484a14ddb. 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/57e3abb4-30b2-49c4-abc7-37b1d6ea9e6f.json and https://artists.proofprofile.net/proofs/artist/57e3abb4-30b2-49c4-abc7-37b1d6ea9e6f.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 0xec4fbe73cd9e1df8dcd6e84a6bce569ceea7185b8b0964735343ff7d968b69cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11cf09837df2adca77112ec3806cd89bd1aa85caa565676e1916d66d23bdee5. 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/SE5Q52304373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8eb48a9b6491c2e77e7e1d31d1ce42a421d8fa89b3a8cac431da5345cf2deb0. 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/SE5Q52304587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93347455c8e09bfd85d10fdf7b9df1e3d1d46d844d62c1da747d80d5f261e1a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:32:19Z), 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/SE5Q52304589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2f55d4bac901125e898c915eae904bbc1207186d260656128480ce842f380. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE5Q52401371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66597147a0dbdc4a11229d9d29afe82d6dc57eed7406a65541d37c8128f48d8. 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/SE5Q52401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f114366e1cbab2d897b4b9885c8a9ab43726e5225d09f10fe0033d0bc915a7. 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/QZQAY2425466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceba4f19b52cfc4f5a884350ac430cb920629d97e9533a0bf7739af0ebf7a9c2. 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/SE5Q52402502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b2d7beac35822de78f1cb4b89c0b657706f49eb5c585e6159feea9cd8c1b86. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:25Z), 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/SE5Q52402650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a9267e70141fbf65f739a82bcc3a873b87ddb3026e2e08c39ab09f90204dbf. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/SE5Q52403426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f818b3982238b0f23217b285f049dbc253e6f3a39ede786adb2a6e1a22f59c0. 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/SE5Q52500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4158757d46ce06eb0a2334a176e898e2c980b5a8f819c1ad56a493358c4ad3a7. 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/FR59R2115730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30962aa33c77e751aefc5ef7a5d4692535b291d2b1e47df9a0382f2b19780c6a. 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/QZN882542336.
Undercover (feat. Cypress Moreno, Chris O'Bannon, Feefa & Ratcheton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba776857459c462ced4888cf75a1f70f3112be9d3a8f5e39992d27ca8e54f3d2. 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/USUYG1375865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe3e3b854885bc630f1fe339829e19ab43911d1f1a3a157db41d1651a80acf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CA5KR2158164.
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 0xa84792608f3f89fdaf06e2e0198961efc03d1eacd819b19ae150d7bbe9592b69. 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/USUYG1274003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf737a9a2c89a9115d44c55b2e737a9b8c3d278d7cab11a6df5a4d9b48cbf4a0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/SE5Q52400937.