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 0x97e27b6b47b0ef43584f90cbc8c66cb3a40e364f75e9a100710a18e873366dc7. 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/c88315f3-8612-41f3-9c65-3c242188a275.json and https://artists.proofprofile.net/proofs/artist/c88315f3-8612-41f3-9c65-3c242188a275.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
sunshine (feat. Finn Foxell) - p-rallel remix
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 0x5295d4c63e917a2f973a814a3f88e1771d544d565f7685a2552e4b00d54c0373. 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/GBARL2301091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd27c5f1ca528aa7e41ff4b960d29cbac4de6460e24ae0e8a4c15bf091903292. 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/GBARL2300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd27c5f1ca528aa7e41ff4b960d29cbac4de6460e24ae0e8a4c15bf091903292. 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/GBARL2300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ee9ab515e19537e35b6685c3ede08ff498c1ef81b4de0caf4b3e603a178ad3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEL1903125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2242fecd050b86a574cc2bd536d510495b944a7ab50cba2e7c4121adc7814f4f. 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/TCAEL1903174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144fa1630d69f1e4969f76a4fd51a1cb521f5743d7b6493de4b7489e796061ec. 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/TCAEL1903177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90e429489213b0ab1a12e11524aeccb02111690dcc455a44b89c3a1af7043bd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:25:55Z), 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/TCAEL1903165.