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 0xf9fafbff4bf2074af0b97e9cced494e6238c9ab36e77c4c4a16cf60a7d3ffb20. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efde690f-f108-4ab4-b3ef-a61c90f2334a.json and https://artists.proofprofile.net/proofs/artist/efde690f-f108-4ab4-b3ef-a61c90f2334a.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 0xce98c8dd58b28cb95981f20cf7c5295bbbaf73f28a59feb06298ca77af086cc0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JP92A2403537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c2fb66ba48fd2459d731c9ab40e7dc05cd9c4c83da9a3d070680c0132dc9c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JP92A2412816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc5f91f8d9a7cffad538c728e15dd262bfccf8611cc89673d0723db53bbcaac. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92A2412817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308bbc0e7055da083ce478d0ec3e2aedf6f5cb176d5533782c1000db53ad3e6e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:54Z), 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/JP92A2412818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff39608056a2aa2d3af6a4b7ce62cccc48966978c917bf6fa48e2d587ef0908. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:50Z), 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/JP92A2425245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49228b5039a956889493bf9f9aaa706a0df696a6ae1f111da0948110b78cb992. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPTF02430701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f94345581a80f6c03de487f67098130788f097044a390ddc784facad87656f7. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:56Z), 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/JPTF02430702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a78f3ca6ba7668e5ca038504da5201883a32733a47577359acd10eedd43b52. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:52Z), 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/JPTF02500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc663e90ff3e3b9bf9e6998c4621fdcbd53a9a017cec5662a3471603a1e11bd. 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/JPTF02500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b7661dd2c5a19462d71697b43e14fa1f7ba8fdd2f8027a5b217aad342b9b5a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPTF02504101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaaf3531f0292bf48563457f40d2cfc3d877866ee9e40031d722be2cdcd2e9c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:42Z), 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/JPTF02526503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551fff167c8292ae6d96b081228282f77951a5b69304536c502d6e78815ee194. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPTF02526501.