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 0xc4075c35ae2d986062e8d87964ae6647abbca7188ae194a31ffc2bde0450bfa2. 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/1a237eeb-bc5e-4097-a78f-8a9336580f24.json and https://artists.proofprofile.net/proofs/artist/1a237eeb-bc5e-4097-a78f-8a9336580f24.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 0x958cb50f593d6725639f356294adb05ec7b309ee372dd8ab083201276cc696ca. 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/QZFYX1964911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc643dfdff4c48e353bdf1dc2bdb8ac82f3fab65211ca826b20dfeeb4b4d213a4. 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/QZHNA2210309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa3b141407a436064baf44ffe38713bc7ad5e87fadf72269e73af0668a7b823. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:07Z), 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/QZNWX2283477.
Your Mind Is The Scene Of The Crime (Lost Again)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d689cb503a9290b20c9606ac4f0ea148e84de4f1dfd357d9e82d5ce7c4f47. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN92417329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f8a8b1f60035fd198b5ada40859eeadafe4a3cea3f6225ec19a5660de9093. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:25Z), 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/QZPLR2470981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff736e52983d042a30260d07a803dd03a7c69f5a57f76f6a6dd66029649f5db1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ22401900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2671c6f308fbd390294c7a8d9be70c08d855c10be16558ba93d203b968726e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNWX2335317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d689cb503a9290b20c9606ac4f0ea148e84de4f1dfd357d9e82d5ce7c4f47. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN92417329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dceb1c3f9c896521edda6b6e60cf023ff4cfa470282a24308cdb851d0c5aa26. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFM2446620.