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 0x4bb75cd105a23c45fff90053f466532c6345e738666a0869914f888a7b427192. 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/30b9982e-edc2-4380-a735-b9fe13f30429.json and https://artists.proofprofile.net/proofs/artist/30b9982e-edc2-4380-a735-b9fe13f30429.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 0x641363d901c3e12c6def1c9a30031d2b9f9700f4ef00a6834f7fcbc2fe93fb65. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SE5Q51824860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36df64aaef66a6a7fe28543585abcf5ab2e6f149af3e8b56815eaee466d74b0b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5Q51819247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e0a88747df1d466316ea78d1126c8c0df76faf5d442defb12a186fe0b971c8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE5Q51823173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d875dd2fd5cb2c45615d962e266dabd2e0e28f68414ad496b4a84755d4bac27. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:24Z), 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/SE5Q51807687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc78586ca91b137773a8906fb8bfae66e0e18ad8cf05404931761853dc7ebd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SE5Q51822981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5d4eae0c3baa749702fb7b6fa1f3e5b5b11036922b34884ce889c6ad873e39. 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/SE5Q51803184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbffa652c6bcc61937543019436cdfae33181dfff5399ac52c6a66a4621e48d. 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/SE5Q51812709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f3490982ee6fe33a335b5feccc66c0b106dc57f417e3716c7a0e8bc6114215. 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/SE5Q51806397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1809d9fe9e585f79bedadf9ddec7ec5f84110cb217d3a9826a80e692336aec06. 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/SE5Q51823441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3192674a1e589167ccc7800d7897b1a9cd21c5dd5842984ca2757fbd6fbe05. 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/SE5Q51810961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000340b6e63bcd852bb030a46597b221e6f3afc44c4a19bb6696631507c4fd5e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/SE5Q51819028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd42f769681362bbbde8fdb3fb72e2294aa4396d442b4bf2edc4942434da85b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5Q51819690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae250e24099c1316899d22b201c06b5b36ef52c1cbc8b64970abbba17617c0f. 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/SE5Q51825748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9893e9712c698e82791e66dc87c944c7973f7cc4eeb25114bd374d5eb7ed3d. 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/SE5Q51812201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8a4a5167fb2dd0d59b873d64a0f33889292552cc7e2921157b82e82b269c8. 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/SE5Q51825669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5509b024151fdc8632df57b0853e3d55416531da22a5d7e885e39557ef6530a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/SE5Q51814694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3667bd32c6f9bdee3478a035fb21ad331740abef1cffdc34807934253e945cd1. 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/SE5Q51816452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc3f31064afa745ce35bc98b4b52c53dc09d3525fb0a39c8d12a09fd5b7cc0c. 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/SE5Q51812693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b72a5d2de246ac7947f4153af80dae16cadff23e5389a74866bbb55f158d09. 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/SE5Q51813553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e88b3f0aa64ef0154e34a2f3d9fcbed4e9a7126099e2dc32fdd4fe97bb0014. 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/SE5Q51801758.