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 0x8108fe1372dfb3ed0989758f6a86af32594c531b8f656623fe719c1db7a42801. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d713ece-de7a-4aef-9c0b-c1232ac0252c.json and https://artists.proofprofile.net/proofs/artist/6d713ece-de7a-4aef-9c0b-c1232ac0252c.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 0x6e2093a42919e1b6821b5c73975fc524438aec2882686a5268d0a12c9c81a4ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282280973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c6b8c218a64229d487409f14ba47dc5f6cad9bb2fa3d0c91fea7a22160f2a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX282117283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5a5c1d06b936896a5cae79c5dee39cc73b0820b63d49e69b218c88d4c1c79d. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FRX282117190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ec2f5aa134652ecfa421463fb0400c3a1335746bdfc2c604c2f2fac3ff4dac. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRX452125948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2de28d742d6e3e2ac8c5f9bc67c75bc4e5f7f8f4390f11def8e5a5c16a1e33. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX452185402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e03b1336922f275a5defe5b0edd34d8dc4c626e6d54bf5debdcdb997e2c87. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX282280968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42de582eb3a05da59d03ade345531eeaf7df134e75052d68b9c78ebad16040f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/FRX282280969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b923a4b1d76d5053cccfd4c4802de8fe3b93be114f817aeda86a77e35b1077a. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/FRX282280970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb1aed26753e6bd2ac8c0bb4f939f9c0a65bd4e842c546cba461410c9ecfd74. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRX282280974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6619944687731ff7e5e8c76f0569b15984eb3ddf4e52d8e3a9766f768bd6a6. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DGA062368584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58379f3595880246df33a5d7556a2e89627d9909530a460fe03cc323826eb918. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA072238038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bc3e5a1345a7564fc5ce2674ffe004a17eb0dde69a158fd736439fe6ae2df7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA052004831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0a1c5e6277b053515fed15e7286840277068fd0d68315c83b2f404a6479c89. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282016229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192f4190fbb1a520949d99be0d6f90ef438f714ac4783faea94fc3900a2d1129. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX282032776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db2390be254a6d9de04e6da5ded227c96aa492f8bdea7d2b985badf97bec67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282025393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86cca7c33405f92a5665cb544481064e3bc95f423cc105ddfacf9808235d90a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282025394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f61f42d836d024b01cc3980fb166614cee9ce1fb86f97bd0de19dabf60bdac. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282025396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30de1d294c193b12dab23de98444e2054b388bc3cb73495feafd5cbe396fd4e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX282025395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bee69033b517a66f9e226d7c53b39b90b566645bddb560aa2d5176615c0c09. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FRX282025397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2885565eb40926e35a7bcc4f9005d4923c83e76e3cd6ccf5e278dc5b68aba3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX282016240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3299a5f97a55afe5498eab253094be197e629f4e18398cf0ca72e36cc228e38. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRX282016238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ec7feea7b82674ab89aa809488e27abc6c8f5933570696981a6844507fd0d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX452500599.