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 0x0b34dda5960ed490a702bfbb19445bbe7cb31ab4288be844f538d613692f79db. 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/9a230e1f-f2ca-4b8e-a108-351d3e1e536f.json and https://artists.proofprofile.net/proofs/artist/9a230e1f-f2ca-4b8e-a108-351d3e1e536f.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 0x7d27c96ceb439f711fb9d516b7c20a4e9183c51e8576898c9e021b2def6bfd8b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:17Z), 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/QZK6J2052148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94bc2618110f2b79b881f585b5fc02f09b6b4957c7a942a0375d22def02ae50. 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/FR2X42263459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a354711f1381e861d37a0402cadc76cb344e24f48900b4e22c0dd9b7d48272. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NLHR52128761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e524c4c37c03a72b008c70ff307e4e4855655dfe814e8a62c0fde8e43a0e48. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FR96X2315005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7fdaed2fdb91d4f5b95adcc50f541313fa7db814e279ac9ef194e84dc8ab7f. 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/FR59R2491221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a37d30e6890de54d2bd055b4a724750cd12d02d83ecf94d46989d4958624a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2491223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ef81ac4cb166282d20fb18814a5b800b5245c50dd65de53bf7870066dc2714. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GXD7G2419294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1722c52fa5550f1feb867bed3e1de652ca256d691ec866ad770f7e804ca955. 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/DGA052437896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbf7c9c06ce44a5244e15806315992247e94faaa16428937b286572c3401e62. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR10S2581433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faf0b1842675d0fd4664fc36b8995a2e8d8b157eae948f4f058375bc687ffb5. 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/FR10S2581434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86da6f4a677ee8864ec9c107afa102253ce6cddb6b7f19c3aed025df2ed56e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:07Z), 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/AE2DY2500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862c5ac293cf115cc61fb4179b23c0a7cd98af7888a9c46df94b3a83f45c03b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:44:53Z), 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/AE2DY2500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad4d4d5182c2cdc6582762e9d6368ec91a530f978ef1a95cd488163865473fc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AEUM72500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc39f84c5838a3bded889cb0c4eef985e34b527a16379622288020594d476f5. 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/AE2DY2500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34191351ee056bd408adc7525be62215860db50441b2775b9447b390003c48f4. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/AE2DY2500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27362b129d6c30eb5eb7854c790bd8d40ad9784a77f29435e7c449786b4cad7. 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/AE2DY2500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe45423757d5e17cf1589a7b4ca324b3aa2ccb90db104c1e1f89708d4a785bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AE2DY2500096.