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 0x15247e79778e0248632f7f0e7c13ea9bc2e5c41335015134e2199386a71989a2. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f99f6ec8-37aa-4dab-bede-160f99663264.json and https://artists.proofprofile.net/proofs/artist/f99f6ec8-37aa-4dab-bede-160f99663264.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 0xd1b96af9e8a1c1dd9bde159cc6792d4ecb40f501077d080fb4a66e3b01bdfe42. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWX2458926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54437cdebf09db5a9440e05f74fa17a906a3369607389ce1692412d634a389cf. 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/QZWFN2443331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b96af9e8a1c1dd9bde159cc6792d4ecb40f501077d080fb4a66e3b01bdfe42. 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/QZNWX2458926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54437cdebf09db5a9440e05f74fa17a906a3369607389ce1692412d634a389cf. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:28:58Z), 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/QZWFN2443331.
A Collection of Short Stories About the Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b6d9f43a5fe2f62748fc9c46dc5cf69c4c7ffd163f1800f2e3f293b548d204. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:20Z), 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/QZK6J2585783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c84c55b2f31d71a7e9fb8160e82fb81350a170f2be75c9b07143b0f6b048bf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6J2585789.