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 0x3918f7f5e612a3650ed29351d58bcc8716fab04704941e08e51e251f87c574f0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7834c8ed-2ca5-412d-b987-c81e857d167c.json and https://artists.proofprofile.net/proofs/artist/7834c8ed-2ca5-412d-b987-c81e857d167c.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 0xcba7f3090481b905332122dae9ff965128c9217d89f2fc672ddb90fe8d481b57. 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/IL7192201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4476ea4127ae41bf481d661970b94727b5bf3add0eb04cc1f7b17471329719. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IL7192300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f91038ca6fe2ff7391f9500675f979a8e6f83ec54853a013812c052c3eced. 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/IL7192301782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95b98ddfa231f94940668c4d35a4b9ce1760da16b56b91488241db0bcee7ab6. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/IL7192402012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b7047c6b589e670e80ba19d686684168d3da3ab7bca39f8dbc1a1a818cd8ce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:35Z), 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/IL7192500584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5740d48980e994a6cae69d7b6551f2d3a17b5dc7d642ed492db1e216a721a3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IL7192501064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79845d77333bc5cadfb1fcfcc0762887b2ffbe2580e1b1419a2a8c8449debbad. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/IL7192501065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932bc5c9605f25947ada8b30844a0c82fc26988580f9315932c57ed9167236b4. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/IL7192501067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a676dc43eea91798fe6b872f38a735b2eb4c2d81d9227576562ff71359f036. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/IL7192501069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0aac903cfb9bcb2cf3d09cb9835b10e531bbe0ac0b406036fdfd64608553b1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:35:40Z), 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/IL7192500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8e74d8fdfdb04801972a0ffac1d68091dbb91e047b759c58e758326f614a28. 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/IL7192501595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8412cfa66d4759356e44e0ef1a2c0ff661d45fc0c22519cb9dd9c625ed60cf86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1694449.