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 0xd7a21ff518de8d99b6269f4e5825b4c9c5517d51fde60d962fe654fbc04e47c0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e647ca7-3eeb-4e50-8751-a6ac3a0eda37.json and https://artists.proofprofile.net/proofs/artist/7e647ca7-3eeb-4e50-8751-a6ac3a0eda37.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 0x884cfee7ce89b0694d1ad38833525e32ec61d105f91192bc84ce35124d029433. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:08Z), 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/DEZN82363430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ff904b23d317ef20758e641f95c47c244223fa8f6e1e202dfaacbcd4fde7b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:39:45Z), 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/DEZN82363431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0dc6ac836df9758fc4ecd645687377560bad14e1fc13245e850fba063cbe2. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEZN82364337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2649a06ef2aa448b515a3b883ceb1f0aaadcd4f4dcf5bf6987a1852ca11920e6. 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/DEZN82364338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa014349e998bfe7124089e29f585908f7100a05e15d36289e99e95571d0a5398. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:35Z), 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/DEZN82365492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b30ae9c562947a76cfa410ec8504c1c67c363554f4046e27ef0ce92287487. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEZN82365493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195357001a11cfdba89c341b79d25ffd9d69ffd020e6155fd13ae186c5245556. 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/TCAID2431235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff028af175863accb9d113057207e7739c47e5c76577999551f39a19b4a5ead. 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/TCAIE2477334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3623a77f8c35f7ec57dd48878f927f8731d5a8d2c7004049e4db4a9d11b5b4c8. 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/TCAID2477339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70892993151aa52a3f9e6d5c69e5017d93f6361e6d6110ef4790b1bca8a814b8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAID2499224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293add4e379b5e551fa111637e0b577aa0a854cf53dde45af91bf45ae95b2542. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:24Z), 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/TCAIF2438293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98f5a38625828010eb2ffa498608cf45d3d3afdbfab5d364f68f0928a6897b0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAIE2459769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da301fcea3bb70edb3b1f1f6b5b52bfa0fb680992a05e34b27126a0f3fd7f8c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIE2472160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2194fe1d79ef4795fe65da0c83a03e8a4e669eefd3ad0a96a6e7d1a04ac1421. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIE2472164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9745aa835090c0b7f7e7d9cf3ca6f66a499a8d73c85aac2bccb4cac8a57efd50. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:37Z), 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/TCAIE2496294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda354a273d6292aa9e28cacc79d4b3a17bc59803eba8f6cefca760baa4ecaae. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIF2496296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc959edbec76cc9dd2f476f92da89ccf5f130a19ee688e065003c364c2eb49d38. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIF2428115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64b7be4a57a1775530392b30ccbd0565e5f0532936cd97c8b29fe9eddcc1dce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIF2428117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f0ad551623d4ef50e6dd935ed4efa05da51de7a8e13475478106743219b67. 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/TCAIF2488830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de3345ce06940ad478285ba75a98d9fb8412a3db3f48b148696bceb6582e6f4. 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/TCAIF2488832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a33c4c0e9bfbe01631f60f7d717a7fbd5264b5c014f535e92f243137eb284. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIG2410940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8605983514ee5cf291c772a3e7c028bfc63b05a8e864159476c83fe31b3326f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIG2410942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a770d71562a7c6cf40cb042a4eec30617e5663b41f44127618c8896bd4bdf7. 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/TCAIG2436002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453bd1e3b3995df6e09ee0cf96db79d6087439776a554b54cf74ee3f8ec98d4f. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAIG2436004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf438040afd4c82c322016d8887220dd5e629c9893b9e2a3b43c86d6986d79712. 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/TCAIG2469381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc262d237a6bf7fd763ef929c96c009edbec8842e750166604800d9a1f6779b86. 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/TCAIG2469384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de12c14255a8d37e0d4823ab8edd2ec410b0347ac5b7ce23ec26c1e2195fbbf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:37Z), 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/TCAIH2435126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601e70fc9334979b820b63137576c8b2d67e6ab7bf38d711bd190f07f62150e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAIH2469589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e3c1b08de98b2273a6fdf1c0fd5554c4466cb2cf683e77fb6f9356becf4d6. 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/TCAII2469590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8872ab5d6f6aca469a445298686c903dbf2f2bcbb4d78c57c9d08df987ab6563. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:20Z), 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/TCAIJ2437139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e55142ff52752dfd68ca54d7c24a74f5ba91a7e26e219b693caeaddcaf8f07. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:05Z), 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/TCAII2437141.