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 0x9f357272a0ba983efbef4ec2066237db51ead7e4fe40fd5091739e3fd61cc75c. 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/556d9695-8955-4f48-9332-79e1fe50411c.json and https://artists.proofprofile.net/proofs/artist/556d9695-8955-4f48-9332-79e1fe50411c.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 0x2701c4698a2275464daa83419079c1f74a2b50393e3be757039d8cd19baa4c00. 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/TCAEZ2047392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20212e55291b3a5e01ec34fe4af73b2c5159a37280e05a3f5d3d75f742e9377e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:34Z), 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/TCAEZ2047414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ff79472eb985bc8351cfea964faa616653014f697f8f67eafac64af164816a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEZ2047417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a45df0cad1b8caf9a7cccb944aeac08e8fc383d1fb9451b0536a20d2b0b863. 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/TCAFE2044232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab1c2087b49b0cd29ef21c3bb5fc31cb11f34e8a7593884518e9e878c4ea9c7. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:15Z), 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/FR2X42179053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b84c16a694af7f7f70c69cd1cd601689f756ecace55fc5186134a208d67c2. 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/FR2X42175714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd10903c08303a98b74e63a7e2ee262653b52dd34194f0ce1b21535785f3c1e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:02:14Z), 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/QZNJW2108065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045a80bad11d56af4d3956579d80897ae70b3abd8221be9902ef5bfe4eeb332. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:57Z), 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/FRX872187031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562471386c7051758cbc9c75c7b02a112cbb6623a4fffd9085801b1944629ba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FR10S2257492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea9245cd27e54aeb2cfe6ab51680777f60a18591ab51ab5c44b740a4e463513. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:15Z), 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/FR2X42378365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c703c94f619f8897fbbca3ad5637862e0557ca9b57219b9c9bc1f84d7a286. 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/FRX202389132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb794e1d15582980cbaa7b8e4ba2661e0c67360b28360fe84b74b8fce1c3bf03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX452397459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcfd3a7de21ccf3237baa4b360e001768433da7f0c7787253bab26b06b35554. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRX452397553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bfa1676fd5f8bc3546fa113a20c84abc376282f6935fc71687b049a6b2d8e4. 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/DGA072304763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84389474a0fbf13ce0277a5a23b4120b609b13ab744e73af016c736b2524ec4c. 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/DGA0H2303266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6798cfa3268388853c7b93825b4382b7222f477785e413bdc55b90cc64c877. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0H2374105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b178de7336832cae97305f8294a5107bf3971a39d1e0af12c0ac0ff9c0561b3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR96X2434595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b118f593a75a8bfbf70878cb7fa91ccaaeb57f71b4da967a396c8bcd65b14d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:56Z), 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/DGA052481497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef85f818b75f74c293c5767e18db9401a5fe4c4a13e757fc5cd3dc997b72179. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2362211.