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 0xf850037a0832b31de05a86669c284685da315c86aac7469eab647fcdcf08ca2a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97aff87d-b9af-4386-8339-d5429a7a796e.json and https://artists.proofprofile.net/proofs/artist/97aff87d-b9af-4386-8339-d5429a7a796e.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 0x0e3f99427bdc9dfd860b8748c90eeda5cd697f3b358522e8df9a82f72321482b. 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/JPTE01906600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2544d020cf794d8f3f2e07fe697907582700d9100272382b3f3615be904fc1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPTE02000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ced01a51a40211a7c7ea6c7756d218b0c6cd54491e68b3bf4ae9b7fe0dad46. 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/JPTE02000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159c7094e9ba6dba09f7e2bfbdf34e7690ea391c2c69592c62f4adde9cffa271. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPTE02000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afd8c8bd327dd5fcbfe6ea554563b0b0742a0e9a7e02875e82e9d3047a8e26a. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:26:59Z), 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/JPTE02000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969af9b5d645862fb469c4fb24cd50c90c872d2d18c025bca4b21fae57894d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPTE02000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b5d21f061d500dabcf2a2e715cea4403df7f23a9017c794c06e88bd299c7fd. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPTE02000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a0aac524efcba69f1e751d63e36d8e7247c14f9cdfd57d50b76b0e7efd878e. 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/JPTE02000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5652306bfda0bb54b87e412fc21c53fbe2f0b0191d86a52929b5fb081021078d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPTE02000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf086b91fee43a217fe55859149c754dc908292f921a3f200145b91247e9c244. 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/JPTE02002860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9d1716a7c614442257816d0dc0bf5ab6d70a5d831d81973c041378478fa93. 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/JPTE02104490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a18319331b2407d9d0a0af5f6e673924033ce84f13e7eefea787d80a95512d0. 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/JPTE02102051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043737415fb11a230a33fed7a829bd3fe939d24d8e463d4b2c37769b7832476. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPTE02104500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651c0c95442f36eb5329efc0fa15e89c2a82ae9184a0b9b3a05fd4c7c4e1904c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPTE02104510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f75dc5fad109a03f208e3d8350499e02da9b4ab71d6572fd69232bc156aae. 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/JPTE02104530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81dca1899cf61e03e5e2369d27dec6bd8cef4d7c255647cbc62b1c30e0eb41c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPTE02104540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f078dff4530950e7d55e8b635ba9552c771b3e93795a11ea3b4ad4ea6447c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:05Z), 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/JPTE02101761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bbb6c74942322d8d3e8eab3b4627060df30edc8a1eb7f5e983875e626657c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPTE02208280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee476d7193a8c1b9b9b89cc153475fe02d8c83274493ef0677d77bb410eebf8d. 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/JPTE02205740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80721586288857cd0021aab879f1cadd8423e15148b54aa6c7894f50a518e5f3. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPTE02208300.