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 0xc34b53c327735a0dd7c7f7ccb710987cb3f4e240005ff9a24795e12f7475468f. 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/708c6e04-6930-4a40-b9cf-6198fc23ab1a.json and https://artists.proofprofile.net/proofs/artist/708c6e04-6930-4a40-b9cf-6198fc23ab1a.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 0x507263d4a10c070aba2343989236a8e374effab4ef92b3a0bfa6177d68d608c8. 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/GBKQU2176354.
Jean Luc Mélenchon - Von Bikräv Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f366b5b27e14adace41ec5a9e878742044998cc191bf7126285ecb8a6d1dcb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2176355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612d3f1e0a707c9aefae7859d6981536a008cd87a14a91f045eb2bf6e10f1b86. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES72236964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af6ecf50f993480512962971de5c5c69a7b57cf62ec47c41fbfffc1080df90. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMEP2294914.
Holy Mary / Confession / F or N? (Single)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce3b1c6b7205c2e35e1b37b59b93e0a688b00c1ff063222767d9def8aa7d56. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWT2548500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb774a2d0ba818f2792183082ba23166ce16e771568cfa66b5818ca97d1e4a835. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZPLS2513320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05ba14bfb24f88da758707961778a47aea0744f8155710305fcc2b69da096c5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:36Z), 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/QZWFG2512029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bba3d5506db5f0d01e6c262284b7daa591be79a3dffeec527798459235f534. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFG2512030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100645aa5118bc0b640fee0e36977348604636a6aa7245db44935bea1536452f. 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/QZWFG2512032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2774813768894dbde5adae1116dc7eec61269463d06847ff8df6b109bd2f39. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFG2512033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872893da40f100f1762244eb70c750467846b31ba21c23e60874c041ac16b627. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFG2512034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c933755b6f6fe6fb2d58b0d715ae236a4403410c2c2a563595eaa989bb44d9e. 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/QZWFG2512035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44df78cdf06bb635f740da1ba74e91a881f4865cc7ce2f13eeb6ce97396f680. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFG2512036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b5d703fbd42d2d8e4f95efbc2e3bd723143e0c58602fad4addfab33f4b686. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:24Z), 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/QZWFG2512037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb774a2d0ba818f2792183082ba23166ce16e771568cfa66b5818ca97d1e4a835. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZPLS2513320.