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 0xa2460f33bd3937379ca940818a37b0e1ffabcc50a4907597afdbe46dc5be92c0. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/247787a0-f88d-4f5a-85b5-7b3d42f2beb4.json and https://artists.proofprofile.net/proofs/artist/247787a0-f88d-4f5a-85b5-7b3d42f2beb4.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 0xa6fdfcd5b468e4eddb8618354e1ca0f615670c77ee2604e1b587cac2674f5df7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FRX282035839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109c9c7294adc445840a227feb7ed8ff4952d568f62b99e727bde83e52492fb1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX282035840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57deb3e1a5793c0ab7cb5f2dab824caf166f5f254e5b736a538549aec872e713. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282035841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4250d6ba1036b5b09ed40f3a36bf99af1bbda1b5b1710d7db047a7f8d00a4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX282035850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73010319950892ece7484d410f9685b47231df84073dd9110c8dff5af8a0101. 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/FRX282035859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c8db4f2e8ef6e0fd3d729ac29e6461e1b48eaed0ea6be81dc8888ccabc896. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IDAB30608653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318cbcb8db1b9cabf5576d03904edd67769e0ef8ca3a69251cacc7cc672f1c9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDAB30608655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11489300f8dac9f18fdfffb8920566114f2680a35899f8ca5754d27dfc80e457. 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/IDAB30608658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e4a2589f4155665c4ec54be2e579c8046091987b672223f723253e721b7316. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:13Z), 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/IDAB30608660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc745431bc125a4e612c56eefda869c7678b4c753cdc0767e8a94df2ceb3f40da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDAB30608661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8361469ae04bee4b7e2da2d9605f6d76a76ebcca92b8f0a59dc842b2f28b6a24. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDAB30608662.