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 0x0f45f780062bbcdae36b1952add6ff9b13dcae1e16647b87f208270efc70953d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3fa83319-0bb9-4c2b-ba75-bb700be72968.json and https://artists.proofprofile.net/proofs/artist/3fa83319-0bb9-4c2b-ba75-bb700be72968.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 0x537abc8070d73fbeb42fb23dba03ae4cad60e3a1b4ae92a26b21a55d17db1da8. 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/QZMEQ2273780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d5546de95a2cff95174398664e33f837ac1b611c4060d457185f7d7107d0a. 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/QZMEQ2273781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfa989481398d366a2544efa03f7ce111b5d1c0d94196b414e4c4e53006401c. 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/QZMEQ2273782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e11753404f1e7fef0f96c90de18feb06d3846ee224466e78842a5ec70264f5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZMEQ2273783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0aa3f18e3499680945b88a95a451f7839dd5131ab05d226a6e44669dac9a5. 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/QZNWZ2291453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa55ae256945dc4bf33d19627a3c36e191bf7f442b456b292000257f219ce822. 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/QZNWZ2291459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af39176e74f606926461d4d7541bec84bd7b3aef9fef861b3cdfceb27fbe325. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:06:05Z), 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/QZTB62232451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07673cadaa12668452c51f31bb2c1be946527758f8dc85a543185a0f1aa46f91. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZDA62373198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad9ef28fe8196e34f0d86e30070061e45c15936ca25d0c7a234a370f42a4155. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZK6N2365168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fe9fc4bef320be2d4efea38c36fec8bf9fb56ab1213d5fc292093a29b7a9e0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6F2351297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8853e08c327aab8273194faff56e47b716f053289418ad7d3150f2abbecc506. 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/QZK6F2351298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856bd666200cbea82984332582ff5ffaffe7aa99fe10718a526e331583506268. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6F2351299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8852a15bb03cf5183c51f84d680a93caff0d9bf6a8abbfc14bd8ec4b054b12f7. 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/QZK6F2351300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b23e6a63f5f4a6ad97c95a2ddfb661d4657a80d5eb2bc580c7b4e94c52fe1. 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/QZK6F2351301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1440492bd68738eb46179120925a84141e30a16506c48042a961600e81986dda. 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/QZK6F2351302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ba83cd2fe02133df2202edef6ee4508e40993c3baab5b533309ec65036aef7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZK6F2351304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2276c31064fbda89e517c7d83de576f6bc6d060580ac6b5ce3b70729610eee60. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:43:17Z), 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/QZTB22343917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d0b1f5766b07741bdc99d45980022d647838351c9b33ff028c084ca6ce5df0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTB72376479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21266c3bf70549f587aa7765ae5863eb891a33d83972e325b02018e9f39dd0f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTB72376480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b29509a15d0fcf4ffc44e4861ce4f0cbc366e5aeea3b538ea70d04668a338b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTB72376481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728348766931e48ef8f44783e82c236b5338748d8ceba4adfbd8ef0495a80b0a. 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/QZTB72376485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea068708ae80573bf76591550c3b916e097d491e9d21c6a6fdd1492055758ae8. 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/QZWFL2331912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4e07886055b0590b681bbe79fffc07446952ac042daf24ae8797448df875e. 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/QZWFL2331913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f26819d962adf3caa0bd72a58569893f677603ae21a70bdb31ea5185131e84a. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZTBB2457938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667335bf82899e3c2de5c621c8eca1ffa6fed6082a265e631abd8cf1f9c901f8. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTBB2459441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf2be0e2f3aa08ddd6c23569069795a7e362f2a44cd5858bf93429cd50a91f3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFQ2475152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f87e9f8a1894923419ccdf79c137289bdaf9f7910a68216e65c40394141adf. 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/QZWFQ2475153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f515c6e29c795faa3d082ce0e47cef619fbd64e0fdd9b73af32bd14884e611. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFQ2475154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86307f2cd6f0cfd69176d44b148430a40e6678930bac93599be1c8cb3fd7979. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:28:57Z), 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/QZWFQ2475155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21c74b80eecbbc4d9bae923a95acbcc5b27bc384f2a0e6bc68d5a44dd5c91ed. 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/QZWFQ2475156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5e1c5857b2f3a3f1e0807e0d30cd7b736c27bde267db7d6eee142a6265c25f. 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/QZWFQ2475157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3285aa1376f4a00e276e98ad955964084a9f19f17070f2d607e1b95d77286e79. 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/QZWFQ2475159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6627dd02b190c56e7befe33563e25d80fcb497be037558be5987606e1ed99443. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZWFK2599756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b27f4187166d172476374f857e9d515b8a51add064804d7d253705a496452a. 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/QZWFK2599760.