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 0xb2bf2c30f2c8263d7e61f85e93fffe724009b6761727ad5e06b7f93cd5f52f19. 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/c54ba8e3-b4e6-462a-878d-75d6f0672d77.json and https://artists.proofprofile.net/proofs/artist/c54ba8e3-b4e6-462a-878d-75d6f0672d77.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 0xd82cad51caebff11642c4fc6c7e3a62abedc044c9db6b804a31cd0c57f38a4d0. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FRX762476467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43d50e316b8a0b1810a2b826d5bb9e3fc70fad48868de025b17cce006cf52a4. 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/DGA0M2366761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f822add7988fd0f1242441a82788bc732b8974d15b7b775734936b679069bd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0M2366760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bdd6bd91b2682265768582306dfb82759c999310b510c1f016e1c1e1f6f9b5. 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/DGA082218887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03be1037e29a9bbee986c069e7317508ce110f9fbe8e007f6d73b952a3f106cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMBZ92252766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed7ec6c12ced698718a94ec5860a7e1f34752ebee6136404fea1d69d6f4d111. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR96X1976468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fac70bbd8c4ab0bdfcd0d3ead9d3177c0d12bb838f3cb3bafb55ad05db50ac. 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/FRX201908280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826c1e543124689adca69ebcd36829a90c7f879f98e45be99a9734bcf118724. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX201908281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd9d5655871ea345b596cb9500c411ad4f58f33f32c69eb8bdee904c1e3377. 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/FRX201908282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dccfb6faadeada821385d2cde43da98bb6086bd7e7d89acdff87dd6fc6d643. 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/FRX201908283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826c1e543124689adca69ebcd36829a90c7f879f98e45be99a9734bcf118724. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201908281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed7ec6c12ced698718a94ec5860a7e1f34752ebee6136404fea1d69d6f4d111. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X1976468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532789d0e01ed9e7aa6952f42284676a1265fabd91eaf95c7e8fef1260929996. 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/FR9W11608317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9b11ea4aa5650b0b2db3c051410db9cdfed4dff038d29fdf4e4be84a9a2d68. 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/FR9W11608318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe10e1c3fa7ca1cfae9cfe14831af486e7eac761fe9777a3cb0fccc0d80ced8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11608319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3428c76fc04e29655494bb17a0a3d8ca0e1b8680627cc0a0b84fe1f175fbd0da. 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/FR9W11608320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a0f569fbcc3c5f4c415f47493706ec8840cbe75acf33c433e5c2b65302532c. 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/FR9W11608321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e5980dce4a756eb7714408aa9ea9d55a32f02199af57d46f96d25e6af79db6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWX2207453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea32dc0ac11035dd00095355ae5d98ac134d0ea38c35487804d11ac2fb73bce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11507242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2013b5d78f85ebf688d05ee34aac7656dbc75008b0f21e1cd5b1c62776c8a0. 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/FR9W11507243.