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 0x79e5b3e9f09a8f8ba0da1ede06a415da8bcacd1aa040a1837b79bb71bc9ae4e5. 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/127c5655-76c6-46f4-8d7f-09cce9e25434.json and https://artists.proofprofile.net/proofs/artist/127c5655-76c6-46f4-8d7f-09cce9e25434.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 0x00176f6268cfff1356d5055b3007bd662a47b081bf65b4e31f3471aedd0c79d3. 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/SGB502226383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb170a9116b5b11267da56e3d90d93b50820a2e572a621e3e467fa7db81b718. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SGB502226384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb76c51933d8be33e26bb04db85393417f32b3dab59ea722c93a533ef535156d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SGB502225924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48d0016265ef5d9f671f3b0d43e9a1ec47c3c39529aad1e8f2e4757a45658a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SGB502226791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a30545667fa79e3193c87e0ce80160a7c1b7c3ac15fd4aa4f707d8a03f292a. 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/SGB502226792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41f92794ca9df89f19ad8134e7a407eee739c9aa278dc73e0c93c8089409fa2. 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/SGB502226783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f779f4d67a27e189e742aa1889006c21d93b1cc6433b8defbbb83bf54170d7a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SGB502226785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b0b5f08b74f779fe1c875c20c79161397cf0c4d49ab40e5edb66e6b2e2cc10. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SGB502230200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98b52bac0f0fc01d03a0e0ca7ed42389a63750ddbc61fee94a51f872f6df9e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SGB502230203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd086ab7a356a4f112d3650ac222811b0352d8132733f149af056d6a0694c9b1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SGB502243181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a728467ac13529fb4d1dedbd8103fb260e7831a5f117c6bfeec11456543a3a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SGB502242303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4be3a0f27735cde757db65d68643636560335537f5147e525149ba83abf8b38. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:43:38Z), 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/SGB502345079.