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 0x633ffa04444c787528e5b43dd1effe1a27dc0633cd8e9b6b9204ade5b60e0ad0. 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/5e841fa7-0bb0-43f2-a351-6816cda854c8.json and https://artists.proofprofile.net/proofs/artist/5e841fa7-0bb0-43f2-a351-6816cda854c8.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 0x08ce740e01e7a009c61641a20911780bce6ca8f19b5f611be4dc5607212e5090. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAIU2414336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180fa33c1cfc7fdbc38d928abfca454a00ad86396904b5f84230e8084055947f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:51:54Z), 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/TCAIV2414372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bc5acbc4b88d0039bf776795bc4b51c5267081745711548bf615754d380366. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIX2411359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea7d3baa377bd0653de50f6b3216599e9d4c9d943521ec22758eac780674101. 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/TCAIY2447152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64afb5b337e7a9185561c7df2e6dc601717e37c4664348f45dd315be87faa576. 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/TCAIY2447157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07be8b7a753e1c6269f2a1fd25f731c015c08b8e9e0fbd3e5babdc454002e1e9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:07:36Z), 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/TCAIY2447164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdb4f1fcf6320dd84167c0b575cd942799b1ef956d90a56e7c1d832bb3da737. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIY2447178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a1c719698c80b43f61b9c7a0c3fd8145d316a2246ddad86abd1d26b89d5138. 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/TCAIY2447182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca9d674656e26b7e27951a304408e7f00430589a9f4b704d13afa033133d8c4. 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/TCAJD2479470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069bef821294fa33502a5f6730df66a807194770e6e51aea873817c5ed90fff. 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/TCAJD2579512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2e0bbc2d9dd2dd12ab92e1491534e00133bd246ef37141ee054f65776c5517. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:46Z), 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/TCAJE2514512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396c0a17c7c87a6fdc3e9d566848a031ec542ab518463bbe2f3a295a3068701. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:50Z), 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/TCAJE2514516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090dbe60e2d0d37e022b434e8d6d3ced692b20ee78f242f5b4ee08eacd899d7e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJE2514528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fbe887d67345c081f6d36ffd2a63b75504c0cca6b0a0a3ac59ebe9d7d77ca1. 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/TCAJH2537778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbaef48b217e0ac6bf464a1a1b10efaf38fb0ec28b872e30a78d06cb8a67ae6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJH2537787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295aadb40a0584a8a54b61c3a5dddb18d8b4b190e02eea736864969ba9d93de7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/TCAJH2537813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4db5e1c1ff869cca5f8812e4dbf4ab6feef9477af8bb50ec114e906cb57beb. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:07Z), 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/TCAJH2537867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc03ad3ad3b9296558d43ff5f5e6ab4d476d8be0b49798a4484c68cee7fdabcc. 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/TCAJJ2577007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b035477b2a91f3264611d557e89eeaf59791c69388859ffb524fdb6e3a953f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJK2512590.