1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd22ad5bf0aa243afea540499b2608757526775bb90d67967d57486881841ce13. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a86c2e6-2e34-4d41-9b87-ad4b76f0b975.json and https://artists.proofprofile.net/proofs/artist/9a86c2e6-2e34-4d41-9b87-ad4b76f0b975.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 → block OTSBitcoinBlock must exist at that height 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 0xe0c7e7b3b98ed100d6c73e5ab3c9607ce09969b80c8ee0e7da4d5848b12d7644. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMZ92177736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab03ec67132ad683fa532f20311d3f08d5519ba96e44ad241aa980df2357c656. 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/QZMZ92177738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010c081102566b2117a7026c61cecdcc44b62cc324cccbc92f4dce938488a858. 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/QZMZ92177739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29da8ce0fd96529fb1d258979aa99f4cfcaa05046497cd15b90c6ab383050abd. 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/QZMZ92177741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afbf960cc4878827adceadaa6ee056a8d2304e8c172ff4a0f1899a7f84bfd4b. 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/QZMZ92177744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c44b7c3cd851a78948d6ea1d07a6f0d9dfc0d1d712a9ea312da9fa850bb1168. 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/QZMZ92177745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029a65b5c73a46e130578b706e111199a21864eecd90eba35801a0f9211eb30f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW272200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91abbea5ba42221e81410363e817af9e038e4c6b3a60e94cda6874a038601bfd. 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/DEW272200908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94955b4d6381a915e48b0ff2b5bc41f647e29edf25aefb7dc7cf6c995ce3852. 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/DEW272200909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a3c48d09f536c438e60e6b1f43e08c4eaa2a5b4ab044b26c703cb847ea870b. 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/DEW272200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e972ed0e56c86b1d2420db7069ebabd03b79a81f4dc7150d18160ce6021187a. 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/DEW272200911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb458bb8a9155653f49ee95a0ea747f1ac027a3f53c1b324f7ef5cd9b35cb7d71. 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/US6R21391378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a89bf1743e4c8ef7ab0d9a0aabe49b274d853da937ca017480230b9514452cf. 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/US6R21391380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2f7973665d70c7ee1c3bbbccf384911718caf783d1e600881c16655047e901. 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/US6R21391385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2b46aafdaf04c1aa2c162764a36e3891ea0aa000d94e3dc490c3744eae89b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US6R21391386.
Brothers of War (Into Valhalla They Ride)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0c9757fa9e6d1bed7614d602d9cdd4f199b5f1bbd713837c7fdd1feef11ca5. 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/US6R21391387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca7d2398adf9aa0a8bb20c76e0c50a3df24c166d1b38ef4ee15ca1466d6f678. 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/US6R21391388.