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 0xa61cd3060c7360c68dc261820957d8f7e3c73e31c40f72bff050d670b057e433. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f565a8bb-476e-45f0-9063-d5129aac6559.json and https://artists.proofprofile.net/proofs/artist/f565a8bb-476e-45f0-9063-d5129aac6559.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Grand Passions of Albert W. Ketèlbey
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 0x5696c1e61dbd84a0700d8dd6a80b62422d12dfaa096df43c71b5c112402cfd74. 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/GBLWD7904002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d0fff2d280f8d95a37942da7fa33fef44555aeaf0ade48486dd9e8b16968b. 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/GBLWD7904009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02efc497c269b9344b88c0d35078de4a7c4d74455b0c0f724dabd52218ec0b8. 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/GBLWD7904011.
He'd Have to Get Under - Get Out and Get Under
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ba2bff4ec4701361451880c43c9bf0756006a186a838b7453ac0938f3c070. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLWD0401507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5fd630e8a95eff05c2f5db94a68fb90fe7072cd62b44614a3215746d9604e7. 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/GBLWD0401511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fac7a37d7ce4caf3ddf9d18053b8d0ccd9c17303c6f3e83cf8bd3a3fef50f8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBLWD0401504.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d67104fc77e6dec5591e5e5f818bf66fbb3c6e9e4c64c8b028df89b6beaa8b7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLWD0401513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2575d8057c7115266c14552b3bf53e1f6673d163da4126ad16362e36f153bf9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBLWD0401517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138b7e46fbdbd351a65cb717b9bbdbec02908b30506c9119a7353d7d7b5a0253. 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/US83Z1456245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcbf1ef893040a318f1e7145f137306eafcdc92670b0f8dab74fc3f9f30bb21. 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/US83Z1456246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccef0c08719c6f91ce7943bd171d1c70f1b971db28b030cf744873c6ec2eb7. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US83Z1456247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28baddf84c15fa3d00230225213566e03171e2233bb41408d74afadcf170eafc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US83Z1334932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2982279a1981ea3afe19a3215b1a66ba75e71f900b16ad0ec7407fcecacb5c1a. 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/US83Z1334933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b7a6a61a20a514e367517a0f7ab15c8d96be6426c2aca2e37dfb7451fb662d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US83Z1334931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba460ab3d00bb9c93f9c53894fc2819bd5c66f60a80bfa304e936e1bc472b960. 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/US83Z1329679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ea32ea780eab2bdf1d80a98d50349bfd1250fee26714cf4acdf83e6e8e79f9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z1329678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc4e38fc1286171f022023a95c88143ea083e3b7c38b411b4fee4de1106457c. 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/US83Z1327151.
Empathie (Original Mix & The Parazite Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2001d73801a70c4a014e3111cd6511217288ad3a9da0ac59de3cfcdc894905. 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/US83Z1336076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb81494b1ff7fa3d63d3043ee3ec9ca4c8c4ffc33ae89de1520af33b833c9ee. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US83Z1336077.