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 0x82d1e2f06b3c39f5c7640c394e505fa41adc29c5a8aa04a8d391cc1e17296f28. 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/f0ea25ee-0830-4971-98e7-0c73eb1645a8.json and https://artists.proofprofile.net/proofs/artist/f0ea25ee-0830-4971-98e7-0c73eb1645a8.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 0xc3e7ae803ccbd94b0053539d0a61c9bb04a2cf9a3d6ad4e5d98eff65617a24ce. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES52582583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f50175566d266915ec95bae63e35b86547085ed79113077d725d0757d7d4a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:45:13Z), 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/QZHN32539762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b8dd66bf5bfa95d39f7687dc5ee733e1c9b51f05815e4546ea61be9e72583. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN42571304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea4f60c393f8c83e925acda42ba8ec9758431aac06e2b6f6d0e0ec7c7b222e8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62512767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7ccf5ff91b89d3ff9e2d68903d1b9a6c653922486cf545099a0d3984f29a4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN42571302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c837d15f964cd4351d441453bba9f6ec31e9137d57d44e7cceefee4f45536d. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZK6K2508865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cdee8b17db372e1db92bbdc1e6bdfc839f39eeaeb610a80f3bbd12ab46606f. 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/QZMEP2532921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9d9e474ed81e784be69197813205409d95b3c6bf8ac41d91a0aae38911b364. 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/QZMEP2532918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5a409bba21823aca99de58d73ddf3180cf44675ce2634ca16ff5e116f0a65d. 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/QZMEP2532910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f248791a00121de2818bc63b349ad8a2fa45bb8d80e70961c012c24a1f8979b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEP2530765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d19d64ba14b98c375597795878be0b7cb685fb478be356c94977cfe5b652ba. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMEQ2518162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb919922c434165f57a3e89270ee516952ed64b143e492c6333d74d371806d3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZMEQ2518163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a3d9cb160a76a33f67db131963a6e458d7865653abf9e3c41eee1fabd1b414. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWR2560986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5099bdd7efa1a9e1997d1b252652acd109d7b323f52e3cb75ec622d777ba3c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWT2564135.
i got timed out for a week i hate u guys