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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 0x79fed6bd4e92dc107954bda56b55a77df278a2b7efc1de31b3513be48d236aef. 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/535f55dc-6100-4cd1-b98f-e3191f0bfe80.json and https://artists.proofprofile.net/proofs/artist/535f55dc-6100-4cd1-b98f-e3191f0bfe80.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 0xeb39c1ddc9d0c43a09e7c4988e038985007f7160adeed0088a3b512b1028bfac. 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/JPKI09509180.
You are everything and everything is you
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20ff128fa6297765d9562ab76c60eede8b0ab7c01d176f788c8e057952bb21e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPKI09509200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd280db77b5c6ca0ce06a29d7ba98ca527ca20d5543637a700190a366d35e3b93. 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/JPKI09509210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b89acd754911fc3bd51de1a6b2fef3b0af1052879085000a5ecf08faa12e33. 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/JPKI09509230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e364bf44f818efe12da8ecf340b17c13550e4e2870586aef0774d9610cc75fb. 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/JPKI09509240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad3b2d5244d5fbd6c113c4b8a6442bb19e09be41576d193f5191139eca16ce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPKI09626520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf91cafb84a6a48b0138680e25181d460ea467c16a9a31620f34cbe348642a40. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/JPKI09626580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb698df23a7bdd24872743c92ae97423a7eb9a063bd5f24f77867430698ac4bfe. 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/JPKI09626590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651bc9e1e9ca36aa28e1cf067146deb524e9929ec4f68df4361ddbf43f81bd2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPKI09626600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3652446f762ed3d6bdaa31024f0dbf7dc253cbe2745703d580c7976be6ec1da6. 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/JPKI09528490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5835ab43e0d49e468a99d8ddc791d20b767265938a45fd63420fc13a0969f2f4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPKI09509270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e08f1fc601db04e85cc10e1b3f5218b417509aba0a66d94cb8a2aa87922c60. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPKI09708250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a64f64a28f92701479717e1a475acfe1805f663136d4126317595532fa7b0e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPKI09528500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b53c6c250f810a9ad87b7f2b6f0e11eb592ba367a6ec05cc9b983271c1a2260. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPTE09800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa77d69f665ab7d819027f8832faf25259e332f5a5c4e144fd57836badf715a9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPTE09800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b041e8f765a4b1b3f8e20144ffccb64bd6c98bb7ace5a046be8f8dc659ed01. 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/JPTE09800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce2d0987060ad92650be63a2fcf2fcd1eface137494def0aa04b03450abe1c5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPTE09800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb4ae64ea31d3579f8a007b29c8353d1c64bb67a94457c03d8c9d5cbbe72e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPTE09806850.