The Round Table (; ; ; ) is King Arthur's famed table in the Arthurian legend, around which he and his knights congregate. As its name suggests, it has no head, implying that everyone who sits there h
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 0x634bb8bab4971000702f7bbba893b28dd722f5023b007033740553ffd9c88b37. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23c7a36e-9d52-4fe8-bf7f-e4b9e83b23d3.json and https://artists.proofprofile.net/proofs/artist/23c7a36e-9d52-4fe8-bf7f-e4b9e83b23d3.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 0xb3e57c2c69a6079dfef326ee30478342f017c11ede275ec76647d501de20c1a4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPPH00000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b2d499137fddea2615cca8920a4d1d5c262a73ffc2110264564dac0a26a1cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPO01801153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ab1e7d6d6a30f64a5741e1ea30f6c1897d26e1bdb9d61b52220600f2a194e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPPH09801420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd301908b8e380d82ab74871563fcf912319df30fc9329d185ad5b60dabb123c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:47Z), 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/JPPH09803831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf670d2caf5e9dc066f4f592aa1e0eaef6b9c640936909ce9d5645c23f6c28eaf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPG750800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a560f477600a42a51ebe8c665a5b379d162fa09f4fd969e06777bb321f06ad. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:44Z), 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/JPG750800724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec6f502852ea5fe10d4edfbb650113bd562a953ca404fb9de5afb6c52085192. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPG750800725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c84d54c14cace01ca135c7a841d1cd4d37ceac237cdd09e3394e9ac6c24668. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPG750800391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4e5b90b18f06d9c86a5fc7bd12a5d8900315fb93ea6205f60d41f7c8f690c7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPB460913709.