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 0x42a984ebe69678e7a0661d18eb43cd06f82476096e6d1bdffe99bafa2b97d38e. 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/adba315f-e48b-41ab-8cd8-b702bc9bb2f7.json and https://artists.proofprofile.net/proofs/artist/adba315f-e48b-41ab-8cd8-b702bc9bb2f7.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 0xe05cb6cc373d71e7175fba870df52fa1f305365f5fba96ab523a28d1d682007d. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/US39K1625111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f33ea4b5b8b9d83f333243f0f767be9768047e9ccc0b3af7bf3123daa93e0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US39K1625112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abb3c134569d1687b105ed186c5a477b0d39ccbbb9d15401434024f25c0bd6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ41909302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4968060795f2b0b35272b22551518453879a39abdd34c96dd0c15f9dfbd15de9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:08Z), 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/QZFZ41909304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3371f8461c44e6711fc85de4b66c088cc8c6f3ec2b5aa605c88869ad506419e. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZFZ41909307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660995bbbe5c52c4625e343f3792df2c96bd3f0b13701ed59bddc9bb1debe888. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:50Z), 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/QZES62187223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6714f50d5006987addb5e98b3c1e75168d587b521231104be4ccb19bf2820caf. 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/QZES62187226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0759d3d266cf0732a375609acb25de2c4ff2389b676b35cc94f3c165710fde58. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES62187230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ec96bfe02451e7c7158346419f4dae4520ba270883ccd82f9414adf3084856. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES62187231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e06597ba0d0ec6e666dc7b0e6fc9382629ec001a8d5ca6fa3197f3b62c47847. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES62187232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35549d953e71a20d8f9b51a0fbeb233ca6b64e0108bcbbcfdf509af05908b3f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDQH2147022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e6a270d07666cb592d0091e98e03db73f755309cf83e9a081cd67b27a544a6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDQH2151502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15296d82fd9f7e56acd74e385ccbf89ce6013d546f8fdf259b46283f93520fde. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZDQH2151503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc358e411046796f84e6ca895503b05d73fa6030610d1ea875d82828c90694c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDQH2151310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dad986e09bc51b57bed703993f83fec2ad816748e54f6aa71e60348c13272b3. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZDQH2151313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69049827c792db8c1dd41d245de7b3206f38c162d29b65d1212cd53e89e5d8b5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:48Z), 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/QZDQH2151317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2212a1aad258f5b5d195fa3171824fa9ae6b73ecec0b437418fbab27fee24d4f. 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/QZDQH2158816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b1a60f850b25abf2a32779982f5aaaa41d61de0c18f37b370600e04d9461d3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDQH2158820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1bb9def108e3c97147bdb2290da2ca61d38d08761ccb8bfe8c7949077ecbc4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZDQH2158822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152a9a6d36aed449d1fb2268019ee2d762eafac2db69ef164ff0e688ef23921. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:55:05Z), 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/QZDQH2158823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc67aae07ec625068597ee9a1d0005d9bf155f81bdfcd18e23914d6992a2fcd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDQH2158825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ff9b6fa7e9c092c7374ceac6eb33fc81f04d6e3edbd8addd12f33f60192a9c. 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/QZDQH2158826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24097725bb3f7e6080b8cacb65e84073103251ee0d80ec486c91ea64f81036. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDQH2372127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e1596150b761eddb46845c742fb8448b5aafc7f74c8a7dad5adc35d1d77952. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDQH2372129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47eacfa9d223a92f1ebabc32a60e21cdf9ad03e67de77617a97e3d39e0e7164. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:35:00Z), 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/QZDQH2372133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6749f73d89f54b35d6e3f70085d74e28dcae87f6ec466cf45ffc090fac2a457f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDQH2372134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c612508a45b5876caa98e353f7edcd09d390c22a7bd8d9b4ca6dc7bacfc2d26. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDQH2372138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408db9ec4d4c9150a5888a0498280998b8b931debb1ecad004733a00c1c904b4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDQH2372140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4cb107dab44fcc6d23b12dbb46dab71e80de8a66ab4469017ff114fba530ce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDQH2372141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a15d0a078136e87dfba00fe1db41058b4b417991ae686036863b568825c746e. 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/QZDQH2372142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79d08db342f3db408abe549795324e27c9c132b1af72499935106fd50905abb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDQH2372143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21efcdad1b8bdf5a1a2af7dc958689b20f38a08e3f2c6def236f161a2bc9766a. 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/QZDQH2372144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc6f658e1f6b3257312ca29ad15b05047c6e09464ee235d5e3227e64a9065e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZDQH2372145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030626b856cbe86f40166c6f278d442ed6e54749ee733ed7ecc177a0bdc55b3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDQH2372146.
Popurrí Encabronado Los Marranitos/Lambada (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f29b2118673ed9ede608faa03b55d8bfdb54f58de115e69e1c1dbd44263537. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDQH2372147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0679b50e0f0dcc2ff1376792356030c3aa18015f33e1661fcf5d62c1d2b42a36. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZDQH2372148.
Popurrí Guapangos: Llegando Al Waco/El Tecolotito (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcec0867d79b32127cd339601c57c99c14ce08c3e95934b6e911d318dbadbeee. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:16Z), 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/QZDQH2372149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a981263f69a09a535467c6c93117c336d5d11c178b73f48c5d18ceb58c2c85. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:59:57Z), 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/QZDQH2372153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66415d4f76ccf88a66a19a9f89201509add84dc0aa4e6d7af8e4814523f7c6e1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZDQH2386388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec891c6f3e0cd336ba0d39f3b01049733e66481dbac74d97de5b66855b80d0af. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZDQH2423681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62be31c82ddd82dba3976c78f39a4e68fa2372b53865925355689236cc2c701. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDQH2428271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0354dd35b3d3ccb917ffdce769a9416846499c31c0adb842c64b11838628a2e8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZDQH2435174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d48134d85bdd2580b9b39459f19802536496ec2032954603e51b960d426a29. 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/QZDQH2438097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b639a339eb10ee3c3b41c37262571c5f4e75a7705b975d1c3ab90b47d2d6b57. 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/QZDQH2440722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4621c9a12c2a6de0f941ab99be4895503685cfa20dcfc3bdd3da97f711bb5c48. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZDQH2533436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0edf81ee11bc7fc5c638f9a4a5f4be15140a229a222bd3c6d4c86195b36497a. 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/USUM71709849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f60532e19223b0992a950c0704902a7273638bbff992c7bc460995def7d7f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:34:25Z), 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/MX2832027165.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch