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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 0x897a94200ef2d653471c99e1416a223ee5f56301325579c5e5a9c701d085be22. 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/c6577f9e-13f5-4305-be34-c5a38b7cdb98.json and https://artists.proofprofile.net/proofs/artist/c6577f9e-13f5-4305-be34-c5a38b7cdb98.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 0xc3a2443cfc61ee89914def265c8c2466adc36195922c63019ffc9f0cb1a164bf. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCACJ1580540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ebe31e812331a5b722d1ecaa80d6731953b2f5795f8182ae9d3f5d30de4030. 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/TCABJ1211371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2164c0e6225b0c47f3175502e08a3a42eda8ba5b3cfb1797dd78804dbc56bab5. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCABJ1211372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f0073b2af073562bbb6479f8bc93f46ec331ae27138821193915b71a256c8b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABJ1211387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dabcdcb0454b19c216da0dd72d891e236be5822e06a0e0a1e5e5329b7b744ac. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCACG1522815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45810c6b63b2c1517e6e2390931c8e27bdad5a563818d5a8888908b9e88cc71. 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/TCACG1522858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d904b115c4ff010d9b79a3e173f62043897b021c7613a56643dd0918905e80b. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCAGY2339832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aacededd8f1f2f9d4cc260fce21f9d1496867ff9aba47bae7ef1172c474c556. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QT3FG2554816.
Wow Its Mok200 (Mokum Records' 200Th Release Jubilee Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63e171c3ad3ccb9e4cba6b08510b8916398c32c455c01340d4109b1072615f. 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/NLLB81900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccbcb382f9322738a090ae2322a66c61103e043af47b74e924fb6f77ea42ced. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLLB82100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501cf0189bdb055b62c5707f8a878977394ae46c2258833014329378400376cf. 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/NLLB82200137.
Kungjat Interlude (feat. Klepto, Cyanide & the Bloody Alboz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1710a9dc1ff07b3fb66741433d73a0d611ac9cc600ab19ae1fa432e582aa0. 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/TCABB1113042.
Lidhje E Re (feat. Barooti, Floetri & Cyanide)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42b01e6e5aea819ac68c67308843a6b1128b827a99e858ad5dd9e540dea0a7c. 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/TCABB1113055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acf7176c3f7b134769659749376c27ea57abc339b3b0efd71a8c0b94f797218. 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/TCABB1113057.