1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x844c2e27374d2c9ce743a2d8b950bfb9e156d9d6b8cab0a65bc78b5fab4ed2fe. 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/f9f371e9-5d5b-478e-a58a-5024ab395d44.json and https://artists.proofprofile.net/proofs/artist/f9f371e9-5d5b-478e-a58a-5024ab395d44.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 → block OTSBitcoinBlock must exist at that height 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 0x26f767eb94a1a35f92ee50753c34ee7b556959acbb9193de1008d4ff530b7803. 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/USCO90132002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad97c55b63fbd5493f56ad00ed7d5f255ee4831f97417275fcacbb25a322cb46. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCO90132005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf969412bfce27ad89def43156f0a30c8233733f38f9e6b3fb379ef5a4d20df49. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USCO90132007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7450273d7d3dd4de47278ce9ed377e7c5339808e991ab86e04098f166a3e267b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCO90132008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcda61b155a2aa2e56b4d2967e7aefacc25933779af2619e5706b7edda59186a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCO90132009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad908437851c2fbccdcaeeb3fd5005e8e43324c0e50317051725a79483d3e8f1. 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/USCO90132010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bce586ebebb071272f77c9e3e40df9de4ee857e86774a6014846cb87ac1b01. 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/USCO90132011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd0390aefd41c776f0c67012c73542867b87662a94845e72770cbf5715e33c9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCO90132012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465854eb0ea52cda57516da6866459050d1eff7397a2c91975e693c831bfcb6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US28S0410371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae03356782bbeb2ff3efabd566dc62c996a64be367d3c34530a5a4091d5e2597. 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/US28S0410395.
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