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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d2a535fd2190fb9b2206bc6f139e6e0750c0dc7b474233b970a0b54721fffe. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c6c6f91-3d28-41ca-9f55-caeb8c7762df.json and https://artists.proofprofile.net/proofs/artist/5c6c6f91-3d28-41ca-9f55-caeb8c7762df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THE BUSY FILES, Vol. 1 (CHOPPED N' SCREWED) [CHOPPED N SCREWED]
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e597e2cb1fd2e2812a3099e22b29b39bd4181cfa73372d3d3609bb5614c0ef. 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/QZTAS2519251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72706b82de3f271938f0d5b4d4f94985cb544ea96c6a74e2fd6921735466a4dd. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZTAS2519252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c094886db689df75cc079f533ff212bc09501d53e5a7486e0b6371ebc602f9. 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/QZTAS2519253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c341cb55a1eb3882eaca70b212b95dbb919c7be9653deb063c4fd6a396e4c3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAS2519254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb43d9a54ed8ef0c742cc38c7699ea11d9aada64a10feaa11de58b07d866f3c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZTAS2519255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02215c66e188599b20e850a6e799ce76043196e0e99bccceea76fb28ca66cbc0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZTAS2519256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cc997f98e412d8dd2200902e417633ee1bc4dfebccdd6d234a20a5d9bff77a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTAS2519258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6924214753c676efb558b9546bdcb5025309cc6c9b800e27b03e70c0f5b86579. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTAS2519259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e053f9c064a83e32e2bc22795ca8a0871d493d1fc4c07ee05b686f965b5866. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAS2519260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e217f6a1d21791a6703c45a8a2f594c7f0f0c34c0207459230d88a235a46463. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZTAS2519262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e99c46cbc093db0e7e9ba1bf8bd12b8a6b9895fefab44d747610da51c9eba2f. 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/QZPEW2555190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3f0dc0e71e687fbe8163c9551166a70b97ca53a89b2ee756bac5d895d431a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZPEW2555198.