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 0xc84f10877a055950f11e58c81efffcda88dc5a2e9618d75e1dca6756b10137ba. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cefb848e-eefa-467a-9791-f128d5275f42.json and https://artists.proofprofile.net/proofs/artist/cefb848e-eefa-467a-9791-f128d5275f42.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 0x1068f46450015755ccc1c3c347729b2bf180a40a4ea2db7190e1307974dbe2ad. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:37Z), 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/QZDA72153567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a17c4685ec2f3d4954cf1ca3b53f284d76496f1a9e2770fc4cca19fd511e90. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ARUIU2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f29caea9d439c401d3dac2eba688a84eae3169f7095f87ed501517e758042be. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:00Z), 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/QZNWQ2119315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e849d66c891e3fcdeff17edf76b5af085332f2028087423353f42ed4c73daa. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/ARUIU2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b1e608d1e26631d6257b5344e0a723bc30254cf62e04563cd0e8d3d21a8931. 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/ARUIU2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6295b505019f4b106af01d0f162b69939447c9a4c36dace2cb2feb98b7fdad2a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:50:41Z), 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/ARUIU2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85402a99eeb37a3af92150cfacc20df5b60a7f23b79c29847b0fad3755501faf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:58:48Z), 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/ARUIU2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa505c51467d4c8ed306e6080d96c1e05ca9dd1a28c5d0649e75156e6aede0a00. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:25Z), 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/ARUIU2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2f37118df49221567d469c65008d846ed9130e8ee506e926178cbd125c55c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ARUIU2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19237d02c790d2696195d10864ae7ff9640127e6b34b965698ed5d1d97bb81e9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:42Z), 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/ARUIU2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7a7214da1c1cc86a030caddf2ca31d56f57167982103556bdcdec915f122d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:11:04Z), 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/ARUIU2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19d9f7bc2fe32345008c20ff82d73d80fea97b34814723f6c34e4867bd0b1f4. 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/ARUIU2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450de1a645c5156f438e2bd9fffe4d4c0683a2f58f9a18bb0c2f13ea4dc07e1b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARUIU2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a6db10e22369820acb1fcaca6e0c75d9f447bc8ff8fb071c2d803a7110fdb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARUIU2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dfb8def9c1b8ef17f0cd43fd5b6fbcf93e1d3cce8f55112d19e253ee9eb4b8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:30Z), 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/ARUIU2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22ba894a73fce5a57d7a98bcb4db9b8628bcfcc4096fa7a408a68b9cc4e11e. 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/ARUIU2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9f942be9cc70113f8edd2a5ad4553f03609116b4fd979dfe46c83d015b9c23. 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/ARUIU2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76be6fee87e5c57da9b7a0bea4545ce73af1418405249b988c848a9918ec9f6. 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/ARUIU2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9abf392d5f2caafceb93e981a654f701f64c2ccfebd55e502f760909943fed9. 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/ARUIU2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb2dbf8e2a40766bd4b54b3db7649fe019e6e6f92c954c2293a3072017b71b9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:38Z), 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/ARUIU2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9582559e663c3d73d82530024d70cad0cb482aff64c7491ed6e8e285f4c134. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARUIU2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53ebd9f9e4d38f6a5d70fa7f7b6b89782cdc08b595721590f0e945ab4ea930a. 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/ARUIU2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2bf30d4c5d2c1768b002cf771cf30a103f634776aef46852b6d9542e9ea5bd. 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/ARUIU2400106.