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 0x408fbf15c2f4420b497804b9a4968356e84d357b31b4e946f9794fbcaf9e277a. 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/d68f6897-6f26-4012-8a59-01d50e17a48d.json and https://artists.proofprofile.net/proofs/artist/d68f6897-6f26-4012-8a59-01d50e17a48d.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 0x05dab04b624bfa8d6e01f285153af6e00db4a2682ca54c20c75c8103267ce898. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/RUAGT2473443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319f9752e0c05ce90b5cd753a82936c610bc6d92ae3b914b06d986c516219f8d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX282172454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbc49b256164fbe39161a1b4c98b7e375d078b01e23ae775f0da73779ddaa7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FRX282172455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a993d0e2ecfafd74cc7ca0acda51f6398bd0bf174d3c45f8de37a9ff9e82e. 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/FRX282172459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3432f774a2914145b150535519c1ac84538e94d63785411d4c7db2ef0be11e. 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/RUA1D2238496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaccc1159001d729e0dcafaec503dc90ed2d2e6c741a8148940f3f9a38747c42. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:36:40Z), 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/RUA1D2363627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caad1c6a7776535c8454b6bdc51861078a4ca21db7a3a8811190462251ae470. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:24Z), 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/RUAGW2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ea027f43924c7929e744f4192a6b8957940d440f5aca40a3701123c5c1bbad. 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/RUAGT2350257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc83a64bb45e909868d782c5277e41c625b2be7ae6c30b3d7f12a07532782da. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGT2363881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf82738108044c788d83077b8412084763699848a85e53a538dc1873aef429e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUA1D2414712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2de525abf01d6f5bb44c7cfe8229797dfabe6cb6493b6cc3e10f34dce89982. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:12Z), 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/RUA1D2414715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7758629a3d2345eb5e9568a0181387068ecca442055f2163642dc8865e3661d8. 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/RUA1D2414716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c74d145e241a2c79e26b49b6766ba126496823d92a133f0532c1894a1cb72ed. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/RUA1D2436308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa9a2bc7fb44224287fa77d8ddc1f8487b8cf81cd49ac745d928824c5324277. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUAGW2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33676b6c203544c084f780ca46b777888be36eca6c0a38a325864879a658be95. 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/RUA1D2467780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb647f137c7cf089f1b2001f1e50ec22afb454b0de15d9a4e6de453105fa48c9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/RUAH62411719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d988cb3f9acd127d95f55df467c59181115ca14beaa6dd9ef148d36cc665457. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUAGT2505701.