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 0x54cded196fda8f0e01213f1089dee73ec8ce6ea8a857f12c87316aba167be7b0. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b808c72-b3d1-49d3-b3a4-51084c3d55bb.json and https://artists.proofprofile.net/proofs/artist/7b808c72-b3d1-49d3-b3a4-51084c3d55bb.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 0x1d1d2dc002cdaa2088223597c3889ab5f225c0cdb3f7d880422877e2f8babc79. 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/USANG2442090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cd39459046d3734e2f33e9e2105b7276c4cd63ae15d9445d45489722d9a3af. 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/QZPEW2445374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2f9b5247f562598c8b0167c59b48168e3dea186f8e201975f5ce15e15b11c. 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/UKZGC2408509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fc590da7d64e6ac337d1912bac77169998cf07c9125e673785113486773836. 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/UKZGC2408491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94832a9a992191210824efdb4c8518e5415cb8055640ae5ceddd6cfdaceda48f. 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/UKZGC2408488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc171155ed5de0945ba52a6884404e70c87aff856a4b2319287fcf68f55f232f0. 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/UKZGC2408513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d873d0610e19c622dd2274bab8cb1fed1226e7fb419d11ee729f67eaf2a2b1. 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/UKZGC2408489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c1679a675c74a2a1880934f3070d2900bfa2a49972eeebfe699dac2d7a1668. 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/UKZGC2408490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb7313a34584f0d9fb28c37f59b8aab7c056075c33aecea414f2760326a69d. 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/UKZGC2408493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9534ed825a7f5061f94d50c7909e46606c0bffa49959c6edd1f40025c497496. 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/UKZGC2408492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458ac6b1ff5608d91c68d0100a963051d9f2c22c25f22e0e2c26606d33b1f3f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKZGC2408494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d8e0a5f88d9809ac7ed07fabb8b36ed4c98665376559eb4789dfb88ca171d. 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/UKZGC2408495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c30b5bcb8e616f71cd788c34cc7df062c931aecc39f167cb1a2d8147c24383. 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/UKZGC2408512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f9df8291932c7d6424863a4a391cafac34fd6632bc82ea4deae5a5a7764e55. 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/UKZGC2408508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911cfe3386ba3b7f2e817f7175a11424e6ac2e8b360c3db06bd1e67dff848000. 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/UKZGC2408507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28273c84e424a1562c23f248efc13e80292be65f6730dd4baad74fa09fb094e. 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/UKZGC2408506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61edfbbf8e9adc42c02216a0f3a4d4c5c645dddb34d990c5ffbf25a0f15438e. 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/UKZGC2408505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b83fb091d4cea75dbac3e8497228942a50c07f1e6ce34d8ee13e01a81ce4a8a. 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/UKZGC2408504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e96e1a3b9de55c7f39f6aee2fbf38109e98a8b19ad3164750629859da00e36a. 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/UKZGC2408503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda68c9f2baa88a0592c8dae58db3ffe01b0d3857eeccd609ec2749924b5f6f13. 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/UKZGC2408502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162bbc7311ae650e17d0cf4c6a9590691711816be937b688862166c574c7c67f. 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/UKZGC2408500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae9a6f702ca8095de5a95b4a59c2a484d4eadad5c2aa54b4224d17b1b5ad0f1. 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/UKZGC2408499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38d35ddd16b7bb521b7f005e5f2cd8ba8982e5056f01cd8e964230f5cd46096. 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/UKZGC2408498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632207e8cf6607f319b698186b74be4a970ee9ccfc2348f8a31f34739d8d679a. 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/UKZGC2408496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab673c5482a07a811c99d54ca3680e43b08a4b08e7f076db40cdd7e45ce1f392. 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/UKZGC2408501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369d9930f615b63e8bb33eb03a154c6cedd46752d435c03c791386ad61d9950. 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/UKZGC2408510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4f69b6a50259a7a8b7c2c26acfa79a817497a0549f6308bea75c0e27a6ef7e. 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/UKZGC2408511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d82b0b2a99a786fe0420793c2e3663f37673acda473cac1ee70285d644290. 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/UKZGC2408497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a081881a03f75d742d2a770c4154e390a51a23e61df111a35538d2bda8ffd53. 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/UKZGC2408487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a081881a03f75d742d2a770c4154e390a51a23e61df111a35538d2bda8ffd53. 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/UKZGC2408487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d82b0b2a99a786fe0420793c2e3663f37673acda473cac1ee70285d644290. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKZGC2408497.