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 0x0506684c179167a648adea85e34ee8699ac9f5f0d476dfd1b8c89e20ef92e0b0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2719a7f0-9641-4583-8afe-ac6332a1e30b.json and https://artists.proofprofile.net/proofs/artist/2719a7f0-9641-4583-8afe-ac6332a1e30b.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 0x98a96ed6dfc2da20924416d08e5c60302a949bfdf73a2cee8e04f29649ab47d5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:30:47Z), 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/QZTB32483310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10b76780642cc2553f8fda3bbc2216f17009e4962b04512d200d181e794b39b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:18:41Z), 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/QZTB32483311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293cf3aa3ad9071488fdfcfaa0aadbcd518b40e8555debd8ed8a8b92577a348b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:21:55Z), 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/QZTB32483314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d5cb9f27c3e599eded23424e55fc70c9c63647ab0074f5bf17bc9b87070196. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB32483320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe779a0b6ec07dbf25e14f683cb323eaf0965ed27528f9e711f77f814ec180171. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFE2438332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0397b100115d4a1fe853dfd1c99eab1d72caab6274ba3418183cb04f0b6efa5. 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/QZWFE2438334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ebdc901a9ddfdfefdf631948c86896617e3714dacf840c8ad416937d1d292. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7M2416780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4aec8e0404cee40d1c23ac7ea2a7318a19ec56c8a32696d704b8f32851f4cb. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:29Z), 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/QZZ7P2408067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d4150f8e670fddb6cfb1343397635fcd9419c72d9367f54db34c1526524fb3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZ7P2408083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4315ec502742fb2246705e5f0ca85487e072f1503fb7301528bbff8e47afa2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZZ7P2408092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426705482982ec104960da30fa19c6fc02c86b9d2c09f727a9c84ebe81434a9. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:43:15Z), 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/QT3EX2457366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9e29fbbd7fc2207bf34a825d0e07b6824e109196fb42ef36b6ddba08910ae4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYY2502220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccfc8e89cbf97105fef55a4a553942e0798304ed16d9811432eb0f2086d2bdc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ72516836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d1094d08eb37b469721c596e772db3a1971fb1af7ae9240b9227148726a1f5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHN72556591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7397fe6a1eba782f2eba8ed2d33e3f6432a94823a5fa91bc455591bdaa2cec21. 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/QZHN92539690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32f66ec4bee3fccf9fd421384045c9df1cbfa8f09fca01142a8163e40f43a35. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN92539691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15298908c7a4cff8d36c32f95fdf5eb13124f98f0482ecb12882028889c0341e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN92588190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc68cb5255d9de77e0984a68c3edcc487cf5a31b2ff997550bbd865685799195. 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/QZK6P2532454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f3aa378cb4b952700ecd158ff082b39a485945f7fa50b90b9ea7f7ac633208. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:14Z), 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/QZK6J2586538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f51ec4355774ca60d811b0ae40ced93aac8b4282fc582e3aff29d6c69e3d581. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB42541589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237cc50813d4e127c8bf662b467c41a38a0ec5c10352e1423e684998dc7c3362. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:38Z), 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/QZTB42541590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08974fc8e9522cbcf7edb21c78ea4f5d35799cd090724cf6e4af39cd61fd87f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB62558454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaa2e2b6239f4c82b555d6396893e2b76c0e22b71a717742fd952dbd22958c8. 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/QZTB62558455.
Voices Ignored, Tunes of The Future, Vol. 44
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e14a819b7c73845b74799204e45705ad24c079730cdd8f76e5737ae8d17639f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZZ7P2513572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5736ed25f0927bbc7b44d4ee0ad0aea933544f68dd6a38154c15261df08ef658. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7P2513573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0145ea9f6a6285127d4e4ae71999a536c8953e875f23220b6a3ff2d1f983c844. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZZ7P2513575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f972b387017e4b6e0df2f6ac76f4f9e814feac58df7b4ec5e059853d53b5263. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7Q2594115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfc3f8518c801afc2ac917315764a1375c6aebe1bce272fa26186845a4e288e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F22576496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e9176e78416a2b8096449217220ceef1eccc31afae419bcfae716b430a89c9. 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/QT3F22576497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6c6e56b3186204b37539720294e9037fddae23eeca1f8d428981febb9dc5d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:08Z), 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/QT3F22576498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bed1567110703fabceede6f43942cd8d840f9e6d48c28ae311bcd3031fb7af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3F22576499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16936bb3ae87cc4ae3b72f83dbd3755e5ab1c4e6c36f1001d517ac891b7cf79. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT3F22576500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1156bdb2f0fb5d2e948bac26a848706647aa5f738738dfef23b32340fdac9666. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3F22576501.