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 0x084a13ffbad98a902ce430cec474e2d110a6ed90c94cdb45231896c2db28badd. 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/fe9715c6-b651-46ee-b7d1-76a7534bf348.json and https://artists.proofprofile.net/proofs/artist/fe9715c6-b651-46ee-b7d1-76a7534bf348.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 0xa2326e09722b4ceb0b20b9aeb7df2a1e42f596bc0878e518689ff404c7c981fd. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZPEW2560466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb387b89127c7d0e00c450b408451af6462253ffe14ba8f322447460b94f37e1b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZPEW2560467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4524ee70372bafb2cdfc9732b68b0ac329a0cb1e1d7d78b0bcd6843ed05cf24. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:23:34Z), 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/QZPEW2560468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976810b67f05ffc9d9f2cd3aeb23c9a1549557f7bb66703415927194530c06d4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPEW2560469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37d8774b7317bdc348125c98cc8179dc394cb6b3ec605150370cfa14e7101e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZPEW2560470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85342ef09c2f8b4ac13ccffc06544e96c795208e2676da24b2beafa2e15079db. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:51Z), 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/QZPEW2560471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39292fc2789eaf878214dd57b93b3fc5e754712f6236344d242fe0fed33411e3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZPEW2560472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5f6c73745b9d15f155a717190ee241cfdae7078a9e47b5f5f6ff103a13448b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:48:14Z), 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/QZPEW2560473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79c46cc69ba752dbbb966a937cdf14bd7cfc0610069f0c56b8bec93f5a66e1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZPEW2560474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382a1a6980260ea17433db5c26720b06ba6c53d27db116aea2a96d3993670bfd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZPEW2560475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3a62dded5b9e11d8d819dbc196ee2180c9e68bfe24b5fab1353be3d5b9e482. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPEW2560476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79505319a04580858593bd61144642641e535859b4beb609a95833e57b412c1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZVEM2551600.