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 0x9bf307a6e5f79a61a1a0cea4f5caac1ce2e13599ab5aec477a5071e0dec96000. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c44820e4-969c-4810-a17a-4e085e3f6eed.json and https://artists.proofprofile.net/proofs/artist/c44820e4-969c-4810-a17a-4e085e3f6eed.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 0x7a3b507f2b19bc6336aaa4b6abfdaca74ab0f53ba695a93dc5c87b571b52330a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:15Z), 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/SGW502505414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205caec277fddbcfff882f99c76914ec7ff9e8d3573c723d8ed5799c11a8e890. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SGW502507875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b93419778efdc28a2347e9525c1e4deb4b5028f5b37de248d3ede4038603fa2. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/SGW502508839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a10ff1fd837efd52ae4b0a670091ff021173f05fd8cc145658a80a4a5c73e2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:23Z), 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/SGW502509547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dc04e6f2357eab305811b0dcd43905476c518f66c5f70fb47927a3e46cd2f9. 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/SGW502508049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92773200e6310de66a2d502e59d8642a38e2e1261302844640f66163aef8d8a1. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:12Z), 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/SGW502502633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a02bd9aa68bd77b5585f312c82638636b133a632c62cdb10124374626b589. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:42:31Z), 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/SGW502509837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c57a03e5c0450c43faa069b2498a2fa6ca0cf18e81feb1e628a695da860cbc. 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/SGW502509129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb315cb413934f8b0b5ed5c1e9e6dac92b2cafc2d09beb912d4329e3ea512264c. 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/SGW502503408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d033daf0c7a909924c4685b17f70457b52e839f35ab22867cd2b9f0cd12f8ab. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:47Z), 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/AEA3A2084739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2298e2209397c63d8eae05049b84abddbb8eecb9e4b4bfd694149d5c2bbd7a16. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:38Z), 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/AEA3A2076303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9fae6b00060d23567c55f6fd67bcb04a3c71e6e0ca2f9ce90f552ec613d7db. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA3A2005437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf6b29b92aff1ca2b56b2a13a544b9bb6063da1388868d267ccc1df3a886623. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/AEA3A2013093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd93e1f356849765712d6fa95cf20396e986667704fd73c6ef668f64f268c324. 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/AEA3A2049123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc188c29fc0162ff66fae0d5571a31f7b0f80997bf3625007c413107d92ed0dbc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/AEA3A2017399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6982c4b9b9fcf4757be854376bff49170f82ffb1cdfa278dae64c5d68da27c25. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AEA3A2059662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be3aa62265f16d8c3f8b1fb3654c9a9c1d42552adcf0a264627416043d04e6. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:30Z), 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/AEA3A2061906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5bd09116b4d910c7f433d5904475e6cb1ed5195f0c7556d4419f2da961acf0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AEA3A2081724.