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 0xcd725ae4c8ee86fb04b7bbc550c86d039ea0588a02b4f9d5b9e35da2a0bab02c. 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/9201131d-ff52-4920-a50f-34f6c9b9ffc6.json and https://artists.proofprofile.net/proofs/artist/9201131d-ff52-4920-a50f-34f6c9b9ffc6.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 0x7d1426bbda4dbd6b17da785ef1df57ee7c90783be2f8ed460dc5b16c985b225a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:49Z), 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/QZES71928376.
Művirág [Live Session at SoundCam Productions]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f4d1d51eff280ed524e544fd6ebdf4884a3fb70c13574331ec1f29f42181a. 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/QZFYY1936900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58636e17705cbe13ae36d55bc799219e898aae8c62a6d9b091e8e8a96e15201. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZHNB1932765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a257ae2fdd21a0c98740c3fd37d3129d3d0538e265e01f608c5fbd1fe7d3a7. 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/QZHN72067788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a5ece728d92a3dddabaedc27f0af52ba136c2ce57a642fd3edf704d68e1c71. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:30Z), 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/QZHN72067789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3978896ea83cae502e32ad1e39f3de697a250d8470d6b1c1f0b80cb28798c4b. 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/QZHN72067790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43a0d7cfedf48aebaa313a428c1d9b43634954f462ac85b4da1713ced98067. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6P1985450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0873ec342bbfeb2513a8e44722aede21f4529adea76dafdc3ddda20b980a90. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/HUUM72000419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab65e094ad88e367b1c380fbf42543435ff5251f702fbbf6b1b4affcedcfff39. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:41:37Z), 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/HUUM72100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38882fb2fc4fe6b30dde6f3d6033fff0abd33d1bcde227d7898e3d27caef423. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUUM72100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d23a2de49137ede75d22902ebfc249d1da11dd444a1e1d0f683a9ffa0d42ad. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/HUUM72100357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ecc68af4e4f3548c9e9c287ced92a51632d996ff69228594f2a72bb4a421d5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HUUM72100360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf006220c7ea2004d5a5a4c076e7d191d12b9d74b42acea51f4163315c3f4f. 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/HUUM72100361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8ac36a4b745361f0bae510b28f4d1b7155cab949746accf24401a3f69b229a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/HUUM72100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4be413f871252560aa512b3d4914021076b5f02097fb32532b4be95d9d9c69. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/HUUM72200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055b70f6cf7c017e6887fb8fb9fa3a64e392c01e412dbac25379d4e398b04b9. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/HUUM72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dfea0afd4bea9ed14b832feedf0a4215e00a3802a85c68d90fa7734e568f62. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/HUUM72200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63981aa36e8bbf1dfa024f506ddd8b494c8cc7d0d104cb22955341603b8c7a64. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HUUM72200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e0b5ee2203065d8b3bbd04b1502ad8cceed1bbb8e252db50c565cfcd923ad. 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/ATR981316904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73cbd17f050c96aa35ebda28df18fe4aa5544aa0865f26929b2c61c5b632a9c. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ATR981316905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b77571e03e60be08cf455c492b3742e86ba753f1e8a79ea5c7da30bced4bfe0. 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/ATR981316909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa888dda2530b27718dc13af236dcc8cf5c31d031f9371c707b2c02d63de7111d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:16Z), 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/ATR981316910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1d1586f9c7bc58c052b678f5f7686a202c880738f7ab6863a0b4401ccf8eb. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/ATR981316912.