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 0x0b09a1cfd1f6fdf0b41ecac8f14cb7a5e4cf7c47f6f622b5d246ff3dd2175bf9. 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/ed4b51dc-a9f7-4e02-82ac-c0826131d714.json and https://artists.proofprofile.net/proofs/artist/ed4b51dc-a9f7-4e02-82ac-c0826131d714.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 0x0819d6ded0fd2f0e042cea81db29fdcd1476d3df87d8bcb186699cfebeb9e941. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:22:56Z), 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/QZFZ62562945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9722e3ae9244ca3e7bd5b42e1ebabbf7a89aa589a663f3c99da7b5a59f735. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZFZ42521032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62106ec0028764f8856464f9d9adc3132b8e191aedc82f0f9334d2f194c4aed. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:29Z), 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/QZFZ42521035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b74062e6cb735e09dd2e833c411c69525c844893736d981b48b5978639cc2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZES82520449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8b4e90a4f8a497dd2be5c76fc86e8e11ae0b94355ef0619fb3d240b3319ee2. 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/QZHN32556919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dfc43826074221f4062212e6f71d796e9f74a2d735b3a3a2195f7b3bb2b437. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:09:58Z), 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/QZHN32556922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaea93f71419db841b05bca6439ee7b089da465fb0f95ad4dd52eba62e2573c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZHN32559390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5ba6536b3dec2a9eb2286adaebad5fae234e9a53fdc35ac52ff8d717f83657. 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/QZHN42549328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c7e24db338ef769f97f75cee318584bc544d6881284d5ece9677863c1b476. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:49:20Z), 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/QZHN42594233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bec76c585e67ff9a2e453ffd547c946d42c3b95852087f0f2cf68bdc53a6c8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN32559475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2037190e1a61280f0f486bac4cb419b1d9ad479c22a9a69a8aeeb5135e374. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN32559415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba5af9aadf62f97ddcdb9c4ca1b1906bca8882c1dce9aad6d41d5e35db5b61. 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/QZHN72597486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9fecdf0b727caff3cfc1ae628c9f200d81af7235c00e1c2f8c97973fd5b028. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHN72598549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bbd6689e02d6a8797f62df9359a3d876ba79ec30e3c879752ce41cbe580ce. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:24:48Z), 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/QZHN92536175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b156e418fbaea5812151d746d6f186eaee8572d7668203142dc5d4eab2c8f38. 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/QZHN92543504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9946113e7011e9ff1bddb6abaf6d95c5e9f13a15d15c48e56b5bec4bc4e2a854. 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/QZHN92538352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fe6ce867a6645859f7a358e49442053187cc60fe6071e0a2dcf632f04877d2. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZHN92538390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a992784410628a2202a8a6453e9aa1ac568ad1d71c06cf04a261adf0a622225. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:52:01Z), 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/QZHN92543805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97599a622ebfc58edbb5bcd98bff7a6ad1727dce5626bb2a6efde469a7b861a6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN92538394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0766ea681972d88eb274e0f138521363aa39bb854435a291fb108d0bdda778d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:57:15Z), 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/QZHN52520652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b30f371ecb184d063152786263808500de6eefa4cdc36e941dfc9f818a4190. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:25:42Z), 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/QZHN92543811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c65d4f15772bcd2ea3a415002cc210b73e552b5c56ff283000a0fa23b9c24. 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/QZHN92543827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c478877281a7e4c2081dd469fbeaa959733ae87bba7f14f9bc3dd5211642b4. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZHN92544088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cece88907dea1dd1e1433c43ee364aee011159257fd1c2a8a94943934c8109c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:01:08Z), 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/QZHN82582689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2383ed7474174b49e39ac0ba6cf1b5869fb19a4010cccbe3ea33ec3f0c3aa2. 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/QZHN82557251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c71dd0f3edc25722ac5f88e1084ec532b3a3fb661ee17c1d81eda904acacc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZHNA2586994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fee2213bc5df5a181701329b2e01a1d09a42e582cf3b963f027bbc92cc121. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZHN92577637.
Well, That Didn't Work (Studio Session's Adventures)