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 0x32c741a6054b9f83ad849ea3735d0660f696e659717effe530684d87e2012add. 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/7e94dc89-4f4f-45e9-a720-f142206b2cb2.json and https://artists.proofprofile.net/proofs/artist/7e94dc89-4f4f-45e9-a720-f142206b2cb2.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 0x67d8723dc3bfb7a31ab047e4b51d1fe6fed33798f0ac2a9a4a6757b2521cff82. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:54Z), 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/HKA131301474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d4f0ce9a9607407eedcd7e057bff2ea88a8be295d9eddaa1a27406374bb41. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/HKA131301475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f85af6153c90fba5c9fce51b387a32ba410ec68c0ede42b146d7e057d26208. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:30Z), 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/HKA131301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f543fbf7091477e74cabc43734d13293ad553ce0d0f4df9ecc9566e9b504840. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/HKA131301479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543d6dad01b75984334cc955a3ec8d567b29bfde7a38659d86377f83fe2782c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKA131301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a2b7b37611e9c956b7862da615f88d92271a38925417d962e470a0bcfd2ee. 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/HKA131301481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db0a5f7ca5577fea65ae2da54a490bf75505e95e5eb11482525297e4bfa5f5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:39Z), 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/HKA131301482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1803359b0b00a4abfb14c8ba15c2bfe8e6297beb65839e552e0e9a26f3f88b46. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/HKA131301483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd697062fc2db8af7d830495fd3e3fbdbaa81b22ee25ac21a5676787a93ba8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:31:02Z), 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/QMDA62171381.
From Now On [Melting Point Live Recording Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880ab9f53afbe32103adfc2a9e5bf5a6341f7cf6b2d6061b37b7d40fe1f9bbcc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKC652300084.
定格 [Melting Point Live Recording Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa875c24144692d87a722eed69aacb0ad1b581ee94b0749184f9dd892fbb5e4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:05Z), 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/HKC652300085.
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