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 0xbc25209c42690b844a27dc02a36fbe5b3722309a2fa3e9bc635cc826445ce700. 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/0c532d85-96d2-407f-b18d-493f63106cab.json and https://artists.proofprofile.net/proofs/artist/0c532d85-96d2-407f-b18d-493f63106cab.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 0xd28ead561663e8ce661e68cd0103215047062cbc8764994c60870aafc0eebf60. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPS801832794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226b31307bb718af5a8f45fc381a7951ea284421ab474eb26a96fd33259bf35. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:29:08Z), 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/JPS801943978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0484aa38ef1c2b44ff722eacdfc79bbe5c7d3f4d64716ef773e396433dee678. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCJPN2172479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d582c435e21e4c91d875a988078c776f2c51fec1fcbe963cc7ad219484895ce. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:55Z), 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/TCJPR2204260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9898f00feccc7d699568730cf634349fed1efcb14c949842ce31d44f38b27d3. 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/TCJPR2204279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65af8363c711487278334be28e78593751539e33094cec55b594beb6b1588c98. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:39Z), 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/JPCR02306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113edc5efa3ed61c6bb19d6df02e29d9dcf4f26209422a542cd101b2b366f47c. 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/JPCR02402360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0b860d1c515661031434432b6ad0a851557e1120c774b7e266aaf353d5b7bc. 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/JPU902402160.