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 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 0x68fe7d7de932dd34b64b1a6ac5c80a6e1848f71967e43d088377c50b1e9a71f6. 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/d21f4a77-22e4-4e90-8bb3-ecad45810891.json and https://artists.proofprofile.net/proofs/artist/d21f4a77-22e4-4e90-8bb3-ecad45810891.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 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 0x3e1a1bb51e419c622ff6e26d68ae047321a8f9d85ffdea680220fbe02bdd5025. 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/DEG932300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a1bb51e419c622ff6e26d68ae047321a8f9d85ffdea680220fbe02bdd5025. 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/DEG932300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cf318d7f683b83a140efbf36cc722fa0ba252f95c7317c4f4141b973824b1a. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/UKF342000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd302514f3dfbee70ce5017dc847c48eb6a8f24543094da12f35fc64d8322cf. 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/DEWN71700265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536f1135394e1ea9d728c24aa7581f38337cef7b1582be690a06c27ca37d7df. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR5S92200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536f1135394e1ea9d728c24aa7581f38337cef7b1582be690a06c27ca37d7df. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR5S92200080.
Earlier Forms - Paula Tape 'Bubble' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeaf1884e3267da5dbeb79238c8d3ef8569536a50bf7588d47c85a7f3f68db9. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NLC7F2100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a962a1aeb489ca67ab430bc8537b73188c7450c69e3657bd007a45e48e5454c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX2364989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657843c77171f7e04b972029a0147b1801db8720623e01e864a7943cd1a94be. 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/SE6QE2107991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad30aa2f692cef72eab8c2b5cdc92024d6b7644671a79a42723dbcc16bbadc46. 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/DECY62000035.
10 Years of Rhythm Section International
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d8fa4724064db116e25fbbe496566a3e4578bec2a164dce7c560ceb226f0f. 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/DEG932102207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba0ccdf3b9c2737286aa61bfe7f48bb5f6dba76aa537ce32bd5def26f47682b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEG932300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f076eb12788f93f593956132c5952a640f6b659cdcd97a90633e90340b6df1. 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/DEG932000295.