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 0x22b226d478080a846cfa49b5cda9b251bdbcf0fe7f711ea62c05382342ccb7c0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbba3a42-989b-4910-8696-b4fb57476454.json and https://artists.proofprofile.net/proofs/artist/fbba3a42-989b-4910-8696-b4fb57476454.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fight For Love (feat. Yannis Papadopoulos)
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 0x73bad460f21446b5f1cb068a1a0594b863b0becb820654a33ca25931ae77fcc1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:43Z), 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/CZBK22000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf536a1b55c24c6b350fa6be6dbd7c4ad7ae4c92569889217af3f23afc6afd3. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/CZBK22000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d77d7c998545f92487aac61c043288003cf6ad742dc4562a4f05c55fdd39641. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CZBK22000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a38ea22181a369cc9a52648a8788065954e594621dfeb9b56f4576abd6a03. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CZBK22000605.
Nechtěná/Hебажанa (feat. Viktorie Surmøvá) [Unplugged]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6ef80929b2fdfca8758146a5a56557f6252532875125f586ac2023f8c50eb7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CZBK22400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb0594a21f00ae1763b40d0c66322cf800831c1f867c289b2f6727e937a2b0. 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/CZBK22400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5221a56c9da3407022692005e6eaed3dadfa5b9a9e1dc33c16629e4bdcae7a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:10Z), 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/CZBK22400304.