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 0xa688c2e49dcdd07b60074a4122805b2541a1397132ca4f06df764ac9aee4bf26. 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/362bea80-f9d7-44e1-b80c-028e97757124.json and https://artists.proofprofile.net/proofs/artist/362bea80-f9d7-44e1-b80c-028e97757124.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 0xe76d2372b3726c7db6bbf91664a2c3f135cea4fd71f9877494d29be5a4476244. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB22414478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa786f74d408f174f2482453124c8c52744bad164ff2b06548696db11ed3af019. 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/QZTB22445022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2681e6895edfaabf830d3988f97fee4ed9448f7c5719e3c6166e71b8b99f689. 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/QZTB22445541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f14b25b247a5900174d320e9454b7edc17fcdbeacec6e259da7c50e532745. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB22445543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f94c9787b570437985de240be0d6ac2a4920092cc43252bca5580ae609fe49. 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/QZTB22479292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71300fd033c0d1af4266f395064dec4f3e65a0350a8d72f39488fff0b8c7f8fc. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZTB22479290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2161af4cbd81c7b1f731cd691a9f0b255f74faf0bbc61080f973b3ce38609f8c. 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/QZTB22479294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7fa326d8e230b2e2381fb3195ecb5d71c39ecfc55f3bf4104082347b3f3136. 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/QZTB22479295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1bb252662303717dbfbbc9205ea3cfec597a3bb34111d3c52cecb66bb95d6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32423523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04a1bf13ba36d9ee5c53dfdfd0a9f03974e983a12c5d5dd542db0eeb906b0d8. 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/QZTB32424935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc712fbf5161834da742a6e3e44aca795a9e0c793396e38d5fc48615ff3179c85. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32424941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f00d9079da37e09b3ce16e980139ada5539475afec320aba2a300a51ae617a4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32424943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0d1c3847e9094cd2544ad86869603339583e6753504bd752be014e0bc99629. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32424938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ecd288371ed156b5140e0bce2e0674dd1f958932a4c266412895206bf8e09. 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/QZTB32465757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d1fcecf5a482620e18e5e88de51260d745423617c67146d736aba5bfbbd12. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32465756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cbfc442dde2c23496178e893f66d1629657c10ac4cf54039636e8efaed4205. 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/QZTB32465754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da305356a349c457f04513599c2d05d2f667fd93bd81cbb5819a7fe4760e5d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32465753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfbabbfaf87efe54b114e408e14f27780346f330a336d78781f9c663b49c0e6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB42490285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0860b4143a572c7b8145a97e346e611703031ab8cdb0bbb3081f74bd202c27. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:06:30Z), 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/QZTB42490286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56bc985558b38997c80776d507e324e206a117f06f7a464259ca99d1ace5709. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:19:56Z), 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/QZTB42490277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd9fd2d2f51d604f5b1b1f359cf90c6d46dea6297a575a62f66093a6833ce21. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:34Z), 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/QZTB42490283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc563046a82dc1fad2c8a599df0412d553d69805dda6b7bf9b6e70616694bc6c. 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/QZTB52423856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec173f27935c6b656b30160383734af896786b67898181df7f7f6878a25e97f. 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/QZTB52424446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e099c98520cfd98cfe949aae94f96103aa14bb0aa4ba2441aea9d41f7b60d. 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/QZTB52424444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b16f0ae141656daac5cb2f2ef707604ed4c09a9620ac79ec21a0474d1bfcc. 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/QZTB52424445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39df8ba26b384abdfd3b686de4c6fbc56af47f8c26004b54e15d952efb7c3100. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB62406610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9a9af0836c83208274e8c9455eab54a82f4277e2c58117c13e807e9e610df. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZTB62406598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a108e1b34d34018663cece5536e82554e3dfa50cf581bbc9ec3bfd14c78c802. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB62406608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00869cf3b537deb48bf776d5576dfa036f563ae9ee2036df2598f11d0a4f99de. 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/QZTB62406613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700074a228a010d41ee9e78700c7586802a62ee18a2683f0feaf2ec510ef64b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:03:42Z), 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/QZTB62406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9039813e380cbf307f418fd00718e6ec9a4d8d1bb73c84456674f262b53a9a5b. 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/QZTB62445460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70447de0de6d3360ca772e71ca68e5423795e5efa76a8c47f65833066d6340ca. 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/QZTB62445454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3608fdb4ffd18252c4886d0cc6c524f5c20f024d5969e62b6db6dfc0a83b1f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB62445457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a677aadec4de3097a62a684085aa0262de6c4b449892da23928f1a49cfa6e. 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/QZTB62445459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096ac831bda129df37f05276f37acffcf47dedab4c6456bb12e491565cf4906a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:20:06Z), 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/QZTB62445456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8164174e8c9ebbe7bd82bf110b7168a432029ada92836b3289d270df433bb2. 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/QZTB62475902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e96d44833dff540866786ace1e06a9bb2f6259169374de8a6fc3251daf0cfe7. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:18:17Z), 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/QZTB62475904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a01084be23cf09c1bccfb290eac5084c7b1166a182ef8000f9cff442e6ecf0. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB62475903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc7970fb0142e6d9ae7a7cc4b3f55554b456eedd026464c7b91df0287e5d27. 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/QZTB62473724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a023c2d7b8c95c3caf559dc57f318c03dbecb42d0328f82fcde1743fe4e7ead. 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/QZTB62475905.