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 0xa294ae210feb07832c59e2a37469f24381f9aa6f10877518e10d83f7e8efdaf5. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e68abc7a-0d90-4e44-a35a-5d666c24d2aa.json and https://artists.proofprofile.net/proofs/artist/e68abc7a-0d90-4e44-a35a-5d666c24d2aa.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 0x210cd346ec03d8c0f46bced9feccf0b6f0b9ed0cacda81d75c98798c66d05526. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA560668822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322ea671b2486013b1ad462249758bb13d92f69ed4ca6d4488610ce64e12962f. 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/USA560668823.
Desire (12” White Label GW Childs Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f237e855c119c4308dbe033d9f04770f3e793a47a6bb626c63cf19e9374ec4. 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/USA560668824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0111b462dd049e6f944687080cead39b2bef5a39acb82fa6314c700efcfb8821. 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/USA560668825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d52bec95389a4e62ebb62feb8235673758c15572840382db77a1d9616a9c87. 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/USA560668827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb794021e9a4ae18538b27a0e3c4b546166ccf8fe6426fec1b98b53210ce60b79. 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/USA560668828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6236404136437aa220cdb58657e57d6215addf2f8ded542737ca4910bd9cf0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA560668829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed7d43a44d5307e80abb924a5bf3148af68581b63b7a00353e475011018c271. 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/USA560668830.
Down In The Park (20th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c251bb917bee4f6cabfc69e17a1bd79bf48ed6b47cc920fde92c017f9ef3d6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:11:54Z), 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/USA560668860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c4fb527c71f784ed2f7039eaadbf8f6a645afe3a0baf960f29758ea28d577. 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/USA560668837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd5dc0ef748cfd495c875f4db06f5e3b3334b9827d6de78fba82f4d558604a. 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/USA560668866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5a1501bfc916c559e924ed492b3d86a21012f1ef136226a26e411e7e6e0405. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:00:38Z), 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/USA370948313.
Alternative Club Hits of the '80s & '90s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf1fa155c5c987afbade71b9c5f78b903e420df2ad038e5a9a7726c4b549a50. 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/USA370696952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8205acb41a318c09a177b9d779d1cb95e2b38a319965788037c605dea1b26a9. 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/USA370696968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1497ec80c212d86354fc60e6d2ce41ebc9c9d901b480d493519b1d7c55bd6c2e. 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/USA370696969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc0ad6a304fe2253d6201e984e3f0b90be3a791c4809b6b29250687e1a4ae7a. 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/USA370696960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f971130900f0d12ff47c8b62b75587fb379e05f9736567d63270d5f0cff6bee. 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/USA370696961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bea094870f13d7f82ef9fd246cedbf338e0361c2bcf0623b609080140ff084. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA370696962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e33c4a984a228a3780a160adaefb2474fa3bc402b5f2cec7681a1074fc4c83. 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/USA370696977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e9dc8827f1e59483fa546d0040f6a89dd581bc7caaa966f82d7e32853f0dec. 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/USA370696967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a0be7139b9b8640917471ce01a28a17fda7568166b394f9a5c4fc321c2bad2. 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/USA370696978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb6392c19a6e3de3894869015aeec446228f88dd0befb9e9db35d0176bdeed4. 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/USA370696980.
100 Gothic & Industrial for Vampires & Halloween