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 0xdbfb3cf1b4c630abb6c9d3ccd3375cf162aba1d21bd9eb55d6b6c963e3cb4d96. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3999a336-724a-4cd3-ad6c-1202da8f499f.json and https://artists.proofprofile.net/proofs/artist/3999a336-724a-4cd3-ad6c-1202da8f499f.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 0x20f6f0fe9dfeadf071ce52c9324e201e3b7d24c8dec7157bd6b68a445cc78409. 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/QZMEP2005038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67610d5728a5710096bdafb999fc7b2ce5972874a9275b5151198562c811ac0. 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/QZNWW2030667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdf2eec473ba52f7a5bae48b3f8f96c5721382563d39cb112aac3d5f5bc4b3e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:00Z), 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/QZFYX2177739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b910cc34047c6113fc3fb7ce4a46bddaeb9f58ddda5e9a8f2eed29b7279f21. 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/QZFZ52172222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b32056722cb88eaaadba36d53cce7ba90eea31e659e1c4fe8c5a29b091aa9bb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZES82108736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6024e346cb9aa5ba7ea0d4ecdaedfc3e7db5a0ef8607a051f83f7d4c8459a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES82108737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f23af8d1ee337a0ed2659948ed2894ff4b21efeda81dd4c979af88f9cb4f98e. 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/QZK6N2154326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ffd2cf25b62106f1d89ea665a4e71f1c5e15e80c386ad36bb0c7c6e647191. 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/QZK6F2137546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab9633c293c5ca663be799d11456aaa0ea34ad65846bfca1b432a0c5b0bf9e3. 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/QZMEQ2171922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6a499896889500c1efb0a3c4c94a69ffbdfc622cc94e309d44779b5045301a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZNWS2140431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324df72d06b352cd02f787cb1c77b0d20067b3ea65e9b6b3eb4c92909d25c92c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM3DF2189833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1a8934625c6cde247b80d4209617a7bc845e838c8f45c3d7848f40af22c64e. 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/QZDA42222875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bcf35a64eabd6377b9e3a430ef5b869799b3089769fa43bd6315f57112b6d6. 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/QZTB82241664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b58951689b7fafc902d29e12a8092535562b9052dfa14057648fa8fca9b0168. 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/QZDA52397962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216937d49282f33e2c6944155b54f53fbd84600e8f77409bf303e013261582a5. 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/QZDA52397963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ed26dbc05d18b8c4579e41cdcfb883a50456eb4bcae46e16cd1f4f56c200c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:44:51Z), 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/AUBEC2302055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecd7f6180bacad62fb23e18dd3b4280c63537ef50df111e6dc4e33b867db75b. 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/AUBEC2318917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e470dd67ec1dc5bc1ef7c82a47817c68a0df2fc9c12c4c81bf5e62c6aeecf0. 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/QZRP42381993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a50ecb7379219529a54ecec1237ac28f5e485984ec8147d7f30c29116af43. 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/QZTBC2378930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0bc83c802221ee1c8b00a65f13af932cf995e901cec390207b103d0a0976b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:22Z), 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/QZES72474987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcdba944751bd81f09ff436b281d058441cd1608a6c27af6ea770755e220f5. 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/QZHNA2468785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2dcaae687ace48af23b458b839f8e72eac0662e4d7ed00fde480b17ca2882d. 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/FRX282492517.