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 0x93abe21076ba127c2067a43e71627ad989cb343e685f181ca8bbab37ab7b0ed2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cdef619-2123-459a-906a-52d04b8bf6f5.json and https://artists.proofprofile.net/proofs/artist/3cdef619-2123-459a-906a-52d04b8bf6f5.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 0x75bc4ff9af0279c41ce40828745758f6915450a3dc72cde6cfe46fbf762d62ec. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:03Z), 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/QZTRX2468071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d916b558ba580c238dabc66d1833ef00175f4abce1e79ad2b4efa9920a37c. 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/QZTRX2468111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812c30857de537317a985591962dfae15a0faacd05a3007c4dc80256c396786d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTRX2468435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b73b79c9262c25dffd63cf2090bcc76f4cb183f29fa81ba3ee803b6b2b26b6b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTRX2468450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab878026fd2d969b323b27fb1122d25a2f08d38b7af48c7494b0f091a8514c9. 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/QZTRX2468468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2418c7ac55f74a102da6d51692f6a703d2840fff2d59c7e9dc827786cb18c481. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:22:54Z), 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/QZTRX2468661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22938b46783d5ede50d746fdf5b82fbd4f8cca71236ff8308ef36b68f6036400. 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/QZTRX2468703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ade3018855c85ec40c078e9bcbfd65f90c14efb84da325e432edb60bacde0b8. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTRX2468727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f36e787e401034b2028861efdc79a2007adb13904d231c3848be8e97ec61df. 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/QZTRX2468746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b38db783bab9f6bd88f0342aba5fcb87949c8ecb43823627b8cbfb7cae9b9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZTRX2468757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe695aadb188609f8211b4ffc42a8842e85c458ff450da1217774c72cbf171482. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZTRX2468767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8aad9f8e758d1dbdea3f9a9381e0f69c3b0617797a864aaf3d504a1e57d5bc. 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/QZTRX2468780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7bbb51655ec3513252bfd212c54956b4339d031be58bf5dee5790d3849bacb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTRX2468796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ed269b82c4957b83c17a930837b2aa7262f1ff80260f0cc6512b82d34f398c. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZTRX2468811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21e43365661947d796bb4bcf56fd7a09c2cbc163a4a79da6e9f4ce5cee365a7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTRX2468827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b7fe66efcaed40959b445bd5a8725afa63fc9c405465fb272c1f80c0519b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTRX2468842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd161729514836b636664825bf21f25d6f9a97fddeeeedb5236df3c1ad9ed5ffe. 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/QZZ8A2423530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa28394d17c16e9dfbfc1179ebcc36f531ad1eb69754a669eaf5e87f467755. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ8A2423531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d55a242ed0ff6692866cc3bd0e77512f1bed735260fb6c76ab08f9acab283. 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/QZZ8A2423533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa8f89fa7f38c183e52c144b881e17d9818b5eb98a548516a1a5b41ea106434. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ8A2423536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa46088cb6a36e871c0f36ee285396482160232be80c8c05523bc86af993a91b. 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/QZZ8A2423515.