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 0xe46fe65b5e55124f540657c8acb71b1e829a728ed7cc0d8929f8c0e7177eba08. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdfb6a5c-2639-4c89-ac80-997169b35fd2.json and https://artists.proofprofile.net/proofs/artist/bdfb6a5c-2639-4c89-ac80-997169b35fd2.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 0x0ee784c6c58d399f53ba0da9511905652e16cb46df6b97176281d6d92bc99241. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAGW2313173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adbf1a1c73c2010078cdfc09fcdf8951a9052a779f28157ca5b5136ac09401d. 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/TCAHD2375864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3934b01d8ce18af6f1895f9f6265b56549b80206da7593a780f72e430cb043e9. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAGW2370785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5ce869dc279e2406e498a6705326e8dd0f0bf89e95e7b69e08e15adf19dcfb. 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/TCAGX2352996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff3825a02e0951eeb3dd8d67025c1b47514dc7cc3e0a55b3fb47b3f0d77ad3a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:46:26Z), 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/TCAGX2361065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638c05f95a4f58724ae2afc7864dbd0a21ee06f8c7fc87e6ee15dfe6efd72f0f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:26Z), 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/TCAHA2344643.
I'm Going to Miss You When You Move to London
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ab32017d324f3ad1ccf391be000690e7fddc7b5155196e78e7dc1a7b4efd0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAHC2391327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ac4f1aa255a36f049bb6e263efe54497430276fc46d9e14f69f330d144de9. 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/TCAHC2321623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f47cdd6ea3c301a3bf48152d2b7651713edd5176f6ea861545cc65616996a39. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAHG2370049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364a8c0ec5d01baec3124a2af719e32579cca3c4ec6f89b2f61be21498d4e73b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:37Z), 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/TCAJD2451926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8229e13613dad0607e52b4a7f0d275864fa6454f11940757e67505b95885323e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:00Z), 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/TCAJK2517927.