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 0xe60fb1d7eaa7cb308f2776b869715b9ec75ceacfd9dba0fe0286cfaa312115ea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7341b697-fab0-4adc-b53b-2f575e786a66.json and https://artists.proofprofile.net/proofs/artist/7341b697-fab0-4adc-b53b-2f575e786a66.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 0xa1a45054e40d4de41f4af850bc74a05be65d85bf7467d9efce88cf8d830e3398. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:17Z), 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/QZES92269406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2f44b5aea510998c89f20af614b0463698d9fadb3a71c7a919526dd0351dd8. 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/QZMEM2263712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb0ad95173b89d820c0f96f69461d7def6ebf611a8eecb70f74bab6f3b686a0. 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/QZRP42338654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3f0a17b554045184ec0a8bfa7161f8c847e4ea203f98fd62f804054dfa0123. 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/QZTBD2394788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd9fdbc373817cb539b9437067165295f04a2dea549969beebad5ce4261e9f5. 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/QZTBD2394789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e65bdb20dec92556762a55c27bae65fed25f7d92841f11e6fef9314fc2540. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:33Z), 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/QZTBD2394790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864bda6e00a6651945e10fee3b3d447bc4a8e5b151548c6c6c7702f7c1505cee. 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/QZTBC2328125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b913e45a658e5224603237bcc5d8f4dcc255d178f761aa256eb795d9a7bb8. 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/QZTBD2394793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697e4c60ed2367b70a2106eba58f79a358d52ac6610784a29a96c5988c6e518. 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/QZPEW2456104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe43569006209f99f3cfe67344a8850bd983fea51f6703c2283ab76677642a93. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZPEW2494305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b674b927706aa0782a45af64c588de6de2c451388532baf06ff60fe1a24b9e. 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/QZPEW2494309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80abc85713ee57791e5ae76600da1d1769707dce287ddb491d6cb155ca11214. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:16:42Z), 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/QZPEW2494310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef467abf3713ad61e2821e2d5a57945b50a081ebb67ccbac4a5d876e3119796. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZPEW2494313.