alt=|thumb|The central street of the Mellah of Fez, with distinctive domestic architecture of former Jewish houses A mellah ( or 'saline area'; and ) is the place of residence historically assigned to
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 0x8a8decf667d754cdcee01db33d334bd2491e089b5341a77fb0dbd1f7593be364. 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/e6b59953-8bcd-4a48-a063-6271cba7984d.json and https://artists.proofprofile.net/proofs/artist/e6b59953-8bcd-4a48-a063-6271cba7984d.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 0xf93dab76c5f665f1224989f60d4f688cf0c4cd2a0e9a403ebd62b332e94f3bf0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:33Z), 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/GBJET1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f6c02001d3d9a2be6536d24d825e405c6694600d60f63ab3c03c127911ad69. 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/GBJET1600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc7833db6cd8b945a7f6353f7ac4b654d316ef93f563e25f3cf72d2df773462. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBARL1800316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf3534d9819a10018b5ba7fd21489cf89311a8f84c8e86cbb42abef253d0fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBARL1800319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bdaf043634203dff820d1d5ce78b264c75016030ed4c1dc280c092dd070add. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBARL1800317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc9cd08ac64036e1fa5b930d119b8e5c74955e20370f9e2b8f858562ea8618. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBARL2000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8dd6d3ae93cd1d708139b1c1a26d43c02873ba2dd0feed8c5aa1478d4fd384. 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/UK9AV2101363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24368f439975c24390bb6b2a594b08b36e9ea5f358994848731b397ca665482e. 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/GBARL2100326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1372f54ef0be0320df77af5486f5df81e45bfe16c68c967f98ffcaaa783d5b6c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/UK9AV2101364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e05524da02dedf39642d887036e3d9cb3bdf89e8c9bd9d763c6d261f0724050. 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/GBARL1900087.