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 0xc1571352a54f4634da87cb2e15df86e08e67f758a15a891c215dc4a41b49ddbf. 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/3e6a15f9-a02d-4767-842d-1e63cb23bcfe.json and https://artists.proofprofile.net/proofs/artist/3e6a15f9-a02d-4767-842d-1e63cb23bcfe.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 0x9cd38875e7b4c0e58fb75c6fb332ad036537f8cf296996d4a03c80d35a665717. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:58Z), 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/QZES82156770.
Tev ir Stulbi Draugi un Tava Mutere Smird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d3dc05da0985e8024dc4e022930343f226b5a82c8e439f7aec0e568a1769b4. 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/QZES82156771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c60024dc109c5cc60e917132c900e4de3469de774e677fc914e1610d78d1ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:18Z), 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/QZES82156772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aa913685208bfe39baf2a9720014695d68e2c62f96fecec3a9b6e6f1fb7f67. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES82156773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57f3aecfa3249c4845b89450a9fbddbc6e256d8ecd7a48dbab1dd432a27d33. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES82156774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9df1eac8af7e1bd079fb66b9742284b22fb7253339d756d6f40b5575705281. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZES82156775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530229d25854c62cc8d10b9db16f2fc9169a9d92e006b4da3e7c766b2ece0665. 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/QZK6L2204127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe629994d189d245c184f9149240e2dbe02a998786f543c86b227ec2d3ef27. 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/QZNWY2348725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1af82321826721070b4875e936e21f64dd98601c5bbda9b63544a4e0976633. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWY2348726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae052c748e664d2c066ae1e697997db4f625f2e6eb48f3073e0a04ea873324. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWY2348727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b1c19d78e182752aa0f5cae07aaeac932d6ce871c6bf35be5ea24c6bae87f5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6M2382994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530229d25854c62cc8d10b9db16f2fc9169a9d92e006b4da3e7c766b2ece0665. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6L2204127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceb573fec35470c53d6c12723ec7683457169ce909443d9e24ed7222da0b5fb. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZTB92411564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0362aadf61ad87d0353d378e0cc6a42e296792ee828bf762292f2d17cf62d14. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:13Z), 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/QZTB92411565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46deb8ba58357756375de422eb4b9e9f9fdc7bd028d255ec604489c0c897308. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTB92411566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63dd4d6b39340797ea781be37890a3cf517a78ad27b604c8149bfc30a648bde. 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/QZTB92411567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60832d8f620668e3f6b3aa9e23dd813e3fb65083f1946741e215bdd7ed9efeb1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB92411568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e7c3e95f26d4f35efc243b4c8bca504f8d14467c52616d6c200a47f49bd2dc. 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/QZTB92411569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3876ecb37606f698133b897a077e874ad0946b844982144706a8f53a7cbfeaf8. 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/QZTB92411570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcac9aedd674319154d46d84b2d379fdcbb97060ecf2daaf349364b35df0021. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB92411572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5982e2f0f1b762f1764ec60382fe034c9ca021019d29e2a3082c21b968ca0dfe. 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/QZTB92411574.