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 0x03c46a63d2d421c4d157a0598fcd793860e1e1896f58b2ffeef28fca4ccca1a2. 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/2182ffdb-41c8-4602-875f-42e059631ff0.json and https://artists.proofprofile.net/proofs/artist/2182ffdb-41c8-4602-875f-42e059631ff0.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 0x72681eb3f3472e19b31351bf42b8440940c8f9a337fa28f1deefd259d5bb59f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMBZ92330904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc146e0698c120134cf25bab56fa21008e109afe14d58d12853ac9ffbc6f5739. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMBZ92330910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f76072b931aa8fe9d95d3ebf00e2edb7a5424dd5f861c340e4d361ad282b2f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA62324390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71ce89785e4a7f0de84d24b6119a541c352ec8cfe0d1b68fde84fa4dcb6cd1. 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/QMDA62324461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf7e3885b220002457786c706269ebbc6acc2a64bfa59281f9a611678d674f9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:06Z), 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/QM7282447926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeff08af8ff1d7809535162c9b92cfec3a5a3f420eebcb93eefb92d5c9e675b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMFME2448132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e799bde3c6958b6136cbf2ee8f0c2def00096df72507661d8173162273cfa2b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMFMF2449626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abc50e7e8bcd919513269bc87726499ddf287230994bd5a025f850fee5e335d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM4TW2523822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800f82dba187075e6df086aaea8c6505866683dc02599e8afd4814194135d8b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM4TW2505873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd8cf76db0e11d48b3e979e96a447cb3ad41a18b94bab5b2e6d8f657ad41806. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2448051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abc50e7e8bcd919513269bc87726499ddf287230994bd5a025f850fee5e335d. 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/QM4TW2523822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e799bde3c6958b6136cbf2ee8f0c2def00096df72507661d8173162273cfa2b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMF2449626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800f82dba187075e6df086aaea8c6505866683dc02599e8afd4814194135d8b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4TW2505873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb8511764a6a6817ded6a8191f6ae91b297f034275f182ffa6fda928a52712. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TW2523832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce18d83f70b3dab6c55ea16cf2d1e2b54475400d85cb22803cb95b548f0e9db5. 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/QMFME2461679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeff08af8ff1d7809535162c9b92cfec3a5a3f420eebcb93eefb92d5c9e675b. 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/QMFME2448132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a341f6e34bad3f27e9c1a4668c637a9fbf431f0b3fc0ec688906e28e60b6099. 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/QM6MZ2590634.