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 0x61dd120a4a70c8a34f07caf7bb46cf5be12019f9449404b0cb61cb50d33ab9c8. 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/b9bab2b3-633b-444e-90ac-566d1e602a7e.json and https://artists.proofprofile.net/proofs/artist/b9bab2b3-633b-444e-90ac-566d1e602a7e.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 0x3159a03800069bb6fbbdea8f72918501fa5b896f5cecea443d1be38ef2303316. 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/US7VG2133696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7ad8f4aa25fb1ad5bd221d7cdd7ea34316a39f1cf6014ea4c0077a30157c71. 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/US7VG2134170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46428855b6cd2fd164aba562c2505be280aabff101a1f3e4ffcb4b5acae00746. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:34Z), 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/QZHZ32204326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407addaec2c6ef06ceb727e1c45140cbc686d12cc33fed2adc190cb40abc10d9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHZ32204327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ae1b84a95a9239d0d69c6e644134cf4a8d939231faf75fb3028aca3f23a591. 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/QZHZ32204328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1599ae65565f61a28eda536f2ffb29dca896e413f4937d541c0db0e93776b8e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHZ32204329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30baa499de4e11d8c7a748ab5e0e4d5d6fee66411059958e7298537361fb099b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHZ32204330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7926e0e436f7f14feda84875c92256ca59ae5b6aeb652348b593b7c8b46308. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZW9N2241311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf127e7d3d1e31caebcb344ce4d207c223a263ac262b88203ece300cd14df69. 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/QZGLS2324179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e4315f0f1b6ce005260496bde469eca8d7f0720954e57fd6655c474935ef6. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:34Z), 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/QZGLS2319227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7926e0e436f7f14feda84875c92256ca59ae5b6aeb652348b593b7c8b46308. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9N2241311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ccd61b636a792f88228bac274c7beeb766ff3827c8a9c430500b1055b58ce3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7VG2320892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a16055c60fe1298abb9a27732fc6f20388d9c42f15ff2ccee3a3b44621586ba. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG2563960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8556fccf780c2722bc34dfabed96a4d2fc4015e6d7c172557bc9feb5a169e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5AB2324511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44a39c10f2afde9d025c1338777094079b01f81c28200020a61dff95204e332. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2563961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ec8ca01a2513cf03fe1fb4f8d6c7430322382e55e2d1ff27c2291fa4f6cdb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2563962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c41620e5aa3edc718007f1f4e157085c247e4ff834a6a8b247cef2b1e51f14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2563963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc49977148ea555424760c9950263cd4e4f8333a1bed8ef78ba51493b67d65ac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2563964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7029c9db3c0c8eb2ae337a874ffe78470fe93a4982be1322a5ec316395cd604. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG2563965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df229d3e6090e419b375d3430fd2dac48dfb76706e9b720b51f4d79bdb65612. 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/QZNJZ2539925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42340511c444c570ef275a3a81147dec2a5e700abe8ce1874cdcd5a66b27806c. 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/TCAGE2278217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e0241378c6ac74ef4891b625e0ad22c8810652ee12b0a3352fcba2f49fa538. 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/GBLPF0265186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70cb6ce9bd5aafc378196b50cdc106371e103a784a79cfdfa292fa683d80fb5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282200206.