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 0x9a4a57cf6d6c6221759d95f3b1b5914a1b02c8b128a5f027f1d96fcf319a487d. 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/d2489154-f73a-42b6-87a9-575c3acb6bcb.json and https://artists.proofprofile.net/proofs/artist/d2489154-f73a-42b6-87a9-575c3acb6bcb.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 0xa3f7456fa51f4e4532c5332a95ae941ffdc0b4c9390386c842efd7fc96f89c6d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCACY1708019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d16bf4524629692b4792660ea66c41bf44c13787dcfacd0699ec45e9cfb27e1. 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/TCACY1708031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0365b89bcc57b0dcbf160398ae5eb85abbc79417fb474eb6c319be4209643d85. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/TCACY1708041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fd7d63be90fb11d8696d95885e2e024a35bfd85ddde36d3c03b33dff4bdc3b. 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/TCACR1621267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94a432b8ac3e6f33578c7810b0d6d428f743b1e2ac84d24074ef1a2901c60a. 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/TCACR1621276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5896724408eaf606629e268d57503c66e53a03fce78d4c9740bd09064fb2091. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCACR1621278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4997718b0b54ae78e8ae14c88326ee823cb2aec67ccc5147c5fe1c0d3c7b23f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCACR1621289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6381e1d8b04535b6c37f08f61b7086d7eed43102a00da8efa756b099405c4. 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/TCACR1621293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd030d7b44e1a8cd507abe8ed9562d28d64297e2eb3bb7865ef5915bc3d6af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM42K1607873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e4e74d4df3e760e37b6c88e325a76656aafaffeb2e4c2aabc9a2d1e692317a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCACX1762975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026aab20566b28587ba268dab4001fa20cb9f1500b717429bf41e7baa63d1161. 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/TCADG1776897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366e2a79db617dcaf96c8a66f756f87780342b137bfe02504249b5007a44029e. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/TCADG1776945.
I Can't Talk to You Anymore (feat. Basil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca102144dc6562ec432bf44cd51b617b49fcdc15ff1c96d513f962db89eaafe1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCADG1777020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f07ac0ba1cab13fb737745000dc1a9c2075bbc304966aadd7ef49a29a8c8be7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM42K1992870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc169a145751bf36e7d4906165f14761e1d643e9564d44dc7060f16586611c779. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QM42K1927681.
From a Boat Everything is Dark (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)