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 0x8b809a393dde60b333e0e6ddb58ed9750ef983425d22cf44bbbf7cea550174f1. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1e3771b-af33-4252-be37-30f0722fbb5d.json and https://artists.proofprofile.net/proofs/artist/d1e3771b-af33-4252-be37-30f0722fbb5d.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 0xf67a2c84f70dff015bf6069bf6c646971363e620c12af4427a95933d9eb2d3be. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES72586237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0f938a168de0928609f5615a65a101dc23b038429eca8c58ca4e3eb05acf8b. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZES72586264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa546bcf8feb3fb7608cc314ec9db3f11f207327141e57c0b0cb34ff5002d198d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZES72586244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69979aca2d444a245a099de4bd01116e3f9972c5e00d7a49e6fcb633329c42a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES72586238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2701997a22737e91190ef830c28ebb9437c520dce80bb9b08e278e1513bac9eb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:13Z), 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/QZES72584086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacbe0dd4731315e27120c21d4d47c759a2c54a4a93ca9f7dfe8a40a674bc17f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES82576784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dcc155550c68ee9ee5c69abc75803b41a80ba5672d2187a3f4bca3e41a666d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:26:46Z), 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/QZES82578670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1497eb9c7d6377279e5870a93cb349acce721ff52d92fd37779af7cf95e970. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES82578672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09911a0e46cc75dc4174e6a146c46b8c0b6e63e16337bdefec82601129613e7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES92535738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc807c9d73feb90322574e6e43b6fe74ca304e54d3819c8e264ab787235ab06f3. 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/QZES92535752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e483e29df9403a0f075dd0cc1e9c6d3022cadfed1632edcb8bb6d1d3670a6f1. 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/QZES92532015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d399d056cdf6e269c9f18b96bd2f2097183b80c1446f910dd3f86406d52e55. 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/QZES92535726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca06a3568ca7f44b101e0ee9c49d3e43b399450a08c5f5ca7efe3aaf0c230d2. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZES92558679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebc1c75ff65d0c2d126921313742ee750a257517dbda8a9564e7df08e111ef7. 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/QZES92558677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640d1a385400090b9af308ca6f6733285c7cb1490e3cc27fe528d20f82bf6e8d. 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/QZES92557636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b9008b7aa761b5e71181d07c5c6b19bf62f2ae0d4249b2d43d443cc88c3456. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:34:44Z), 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/QZES92594694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bcc8a98bb7b52b50afda91746097f66a44c8215adb5ecc880b27bda78efe8a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZES92594707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354258c961bb3dd4d7f46f6ebdf07a24c15c02258138a58c986035dccf51c86a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:06Z), 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/QZES92594704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92974861d84f8440e57097189b57fb50c196640bcb8bbc6775e8f7573f1f4893. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES92594693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c58196b609820a62be1b41b0d05334c66a00e69aa2a197964d81b90ae9e80e. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZES92594698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e58ba2fb8300c10e4e80bab6ca8ab861d78f59b4d53989a85f6f136ee497abc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:32:27Z), 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/QZES92593193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a94eebfe585036dc955bfab01fa1ff6a54e45791f9c09f61284cea66a6b262. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN32526972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eadb28f7f12a978cdcf8ed2b451c7d409fc51fa6ec66ba11ad15fb8a8695d9. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHN32526946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc956faf0d4f4db68f268d32d605489444cfce6dedb4d549d96d86996feb3583e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN32526943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e119be4df393dec7baed75c148c20b2fb96f1bfc9dbb03e5c933f78192ae9. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN32526947.