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 0xa4ca882ccc194949c2fa12144b0139856ad4c93cddc248f2b495ecd3bc51afa3. 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/d8b52650-3c2d-43e2-85f7-c30e2a317746.json and https://artists.proofprofile.net/proofs/artist/d8b52650-3c2d-43e2-85f7-c30e2a317746.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 0x86f0f4cc89a61067d4b43d93b83d2f9d88963721894eda9d8070f9184208157b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFP2197986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff080e1dcee7fcb17c7713e5b5fdb714cd2d8880271cbbf654c28bb35b8a029. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ992000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a59529fa640ae8aef1a95b747aae2369cd5bfe2ef0239e24d14aca7db8e018. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1ae838657c7e81a68bcd583fd709939dca2a8d0837de289894177ea63dc437. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1e6c2179acfb5485a1b048807ff71f35fecadd5dee3412f60bd883e29f8e8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60088c3d095b8729fcc1ba0cab99314a884ec813f343ed296a2ee771dc0fb8d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ992300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0761be8c043a9434a1aa052752640f1a798db94ebca18fd448d89b49836eeda. 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/QZJ992300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6eb188723b6452dc9af6a38d3ed03db036d7c89fe673fced97272a183185d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZJ992300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8340b102ade6272c752ab070e877a1321d4bba0d47a56b424cd114c78bbc01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550758fd5f7ff7497e1d37d35e64ee39a7e4c4efc227b6a8950452e7cae84dfd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23784328aaec33ed722cf7a28458500095f2957d57b48ab1548bca5b802dda5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae748d67f99a3f34508d502c3d31b9542b39296fe58fe246d41f380bcae170f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564c8f609fe9a41ced5ac81ec7dfeeb8f19ddd22c66c7d3fa5e40aea1a6c4470. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4434c15d99365eefd01867837457de1fe951d19a8f8e3712f3658ff8d85d161e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFP2107864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a68bb856bd4818ef693b7856048162840325cdf15c39b2a5406e35dbd7e152. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ed8ef3f143f0f37c1614123765edd27d819b6edb9988abadc2487f437dd48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edaeb70709bb803a1042e24a427203eb180aa1577efd3d8e587ebb97454e8db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8081ac18ef4b17dca243a9e03238ef9487a0c04f77a1a2ece0156057de6bfb41. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad3650ca5e62cb64ee4f037e5ffcfd27928f564b30426cd6774d2ced49baba7. 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/QZJ992300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3fe527beebb070f3f24ed13ee8b5ceb3921ec6ef77d354924f988b211d36d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab4752161e1b441ce8d06433de2506eba4ed40852605863da588634c51635a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f30bc2a82e5ff8b358f0a5254ab422a6620eb6dd59622039d65ffa88478d62a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ992100007.