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 0x3723849bbd7e7aa3b76ae4842c713d9b1139996dc5fa32d1d7c22dda29f6919d. 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/6e09dbfa-c253-4f0d-878c-7ecb26ce1cea.json and https://artists.proofprofile.net/proofs/artist/6e09dbfa-c253-4f0d-878c-7ecb26ce1cea.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 0x3b4abf5bc7ffbcd85d9e249abbdea47942716f1fd7e240f09fc0c0e380e6a831. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6542430718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244d2d3a815097cfb9711af9770f259968e9bdc8121769f5aa5812ba997d0ff0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542430720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cc8479d8b9e78dd9dbcbce83ec06f5296ec112ed8eb7666754e23b81e2a83e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH6542430721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d9bec9c45599bf90ce168090f589272f0fa65d55a7b363a9d9b7b480df9a60. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CH6542430722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d7fec8bc6122a7db9523d7f4bfcb38267b3aace2a6c76376f5e360da7bb25c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CH6542430723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d0ca73eb928cab073f998644feff07d3fa7b4db235f5ed6e480d5efb72f5c9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:21Z), 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/CH6542430724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6df201c6f7f59b3a7f29fc48845984df88548baea33b63bd53face2f19907fa. 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/CH6542430725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d6874c1d834f9ccc5ebc26f71f0b4ee3d57899312acc5d7bf53e832bc9953. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH6542430726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d746c4d1205872b635f3ba478e4ea4a1643f949c0ab8ae49be0618d3f90807. 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/CH6542430727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994f764a28e15d013dda0601b422adc911d50be74093ee85079fd159cc3d3bfe. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:59:43Z), 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/CH6542430729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525b9e68e347722de81cabd662e3bc92dcdf283a12e4ac7128fc99c3ff43b635. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6542430730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefcb732f95059fe6cce15f72c8e35abeb761feb5e756fd0aa45776e7a94ca2b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:57Z), 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/CH6542430732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65ddd870aed35add30bedd41ad776d996f4c53073536633b3bf7886d54b465. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6542430733.
Andrick Airways & Billx - Grande famille - Rave music edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbce6b4ff7ac354ee9508ac0e8f7bb724db4c406435f18cc9e6cf220a30e6d07. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX762576919.
Andrick Airways & Billx - Grande famille Extended - Rave music edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43db6c5b3627c781686f84c5000dd3204fcd9760c71c831546879602b0175729. 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/FRX762576920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92cd2098c51e1b39742fbf70c50b5b2ede143f111a75410891e2a6632c96b62. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR9W12541113.