{"copyright_id":"0xf5f74c3a1cc5cd359db1fafcf6f9bcdf82b1507bf3ac9e0b735bfc69dfd67efa","name":"Youth In Circles","registered_at":"2026-06-11T19:30:43Z","symbol":"NIM0100800","token_address":"0xf2f3e5f804ad1277e2f2ad2c7f2c5140b9c48ce8","type":"artist","uuid":"4d0f9431-7f6b-40fe-ac9c-1fef79ebb483"}
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 0xf5f74c3a1cc5cd359db1fafcf6f9bcdf82b1507bf3ac9e0b735bfc69dfd67efa. 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/4d0f9431-7f6b-40fe-ac9c-1fef79ebb483.json and https://artists.proofprofile.net/proofs/artist/4d0f9431-7f6b-40fe-ac9c-1fef79ebb483.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 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 0x0f4e30b854405dd6a62209c8be53c570a3a37e526549defd5fb2390b736d5e0c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USA2P2122214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22591bc4cdde91c70804f929079e99081035bd11bf265e9cee3197f0d19f45. 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/QZW9L2473682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22591bc4cdde91c70804f929079e99081035bd11bf265e9cee3197f0d19f45. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2473682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe548a14d8623f3ae6cf7c8283362b8d2d85c979bc682928c687d86425f0cad02. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2510031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d726dfcfe6c708485227da02e11965e26e75fda7a6b86eb3bc539c107e6e1f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWB12305616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9810157a26b7a27bd9a030b976c8ebafdad28d35a97854603960f39dbf5112be. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CA5KR2404448.