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 0x07b9c9f89cd14abf17b6f699be62d6aa074e71bbdeaca6427ee6515c00f89bed. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d86d9d64-0361-4541-825e-e7698b31a91f.json and https://artists.proofprofile.net/proofs/artist/d86d9d64-0361-4541-825e-e7698b31a91f.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 0x5c1c0cbee9aa084fa79dc6a22c4784a883eff57b66006726a223ff7b006c1b26. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:03:23Z), 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/JPR562000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554fa14cedd23d7ddfc311e9c1c2cb70250e56e596b140e206c479f38a6ff00c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPR562000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554fa14cedd23d7ddfc311e9c1c2cb70250e56e596b140e206c479f38a6ff00c. 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/JPR562000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74c6bebb85c866e825c9cc0a6e90731262a9db6fdb2038194ffd7ddd2e92889. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:13Z), 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/JPR562200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007ea25d1a0f805e68603328d46d46e39c6d4a2c29663d2318a84e808f52e651. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:43Z), 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/JPR562100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1374dd704b7909ff996a6963dbbec71be5b4cf0b9c7e596113c7d25245a952. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:52Z), 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/JPR562100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd147f859c6fc3f7ae0bddf61d35dd660d44bf7dd7ac1895f3206c5a8c574484. 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/JPR562200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cda976b220ad393dff34d91b70bbe52adf4da5a68b42c612162d7e3cbe75aa. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:35:56Z), 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/JPR562200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89bcc0b7a0aa77c99046003e8366e3e49773df893b95f2099b0cf3d9c9dd22d. 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/JPR562000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079cce8e1e819ff3da57d9d8da9e5b3d2c79ee85b3e56326b129ccf35197acb3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:58:21Z), 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/JPR562300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079cce8e1e819ff3da57d9d8da9e5b3d2c79ee85b3e56326b129ccf35197acb3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPR562300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8887378b20f72835f1516cc7c996873a66bafd48bf36ac287a486233312d8d3. 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/JPR562500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477a6e063e293fb0655aaecb53fd7819d0b83d5180fb06e610cf7e2eaad4eb1a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR562500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed40baff70e5209d38af2c4f7120252719e7c4b483a35bd09dae13d50f8d0bf. 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/JPR562500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc79c17384e0cb4d230f53f03e2a05f594553882afa01e40b47619b4dff54deb. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:56Z), 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/JPR562500032.