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 0x1d98135cc6f4904a3b5dc4195218149255e6c45cd4439f526467883a3355583b. 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/10cc73b1-0e9e-4908-966d-f7aae089658e.json and https://artists.proofprofile.net/proofs/artist/10cc73b1-0e9e-4908-966d-f7aae089658e.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 0xaa28f64126b34a7a4f4a6cb545d1cf2e043d750e6069c94b0a8a407d94f45100. 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/GB2SA1200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f83298e2fd02c200b0b3790c0c1cc9fdd12436371b66606bdd5c83d4774f00. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GBZHR2500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33491bcec18c5d3e211d5caca7781fcbbe309990d4c8549dc1095f5766bf5423. 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/GBZHR2500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43bcf5e72692f70a065e350717aa59a21211c86f3f58a40b8a9a6e7cc890ed1. 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/GBZHR2500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd7871ef38a88bd09396b31ec49a460050adf0162575abb245c66bee8b6974. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBZHR2500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f5fc6ea4d9f8942639c220e6609efb6b14b543cdcfcb0f3f0953876cb4501. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GBZHR2500406.
Luv Interlude (Paranoid London Remix Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe291f5d3edc59edf53fd8518d833cb500c978997ff2d3a0bd61be5aba46d97f9. 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/UKU932582452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde798f8e9e0b51e30ee4f00ce0853430a3e404b3a567bb8799d6604b19548e40. 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/GBRTB1100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71934baa0a7057d4740a3920bcafbac4f1a72caa44a6733090863dfba176a88. 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/DEG932201924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fec8edef9fa5bb495d900f96484aea63ede144c3fc20c08dadce30f6bb8f3f1. 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/GBEWA1501730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12eaa3d3b7c2611c968c8857e9a6f4b539f2bcdc092390978a600396b2ec57c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GB2DZ1400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e30b975af2e385ff85a325a439d043728ed4b76d02636dcbdbc622602f09f8. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/GB2SA1200038.
Burnt Deep - A Deep House Mix Series (Vol. 1 Mixed By Leigh Morgan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44dff21975b28d941a6fa785fea56b548e2edd9baa7cc1b6c2dd15bf381d3f3. 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/FR6V81816383.