REDIRECT Centers for Disease Control and Prevention
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 0x03798bcb1f1805fbd33ab3d0cedea6c50b1986a3406f599c62a64df212900d8c. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34ce571b-2b46-48d9-a874-ac2fd66a1bbe.json and https://artists.proofprofile.net/proofs/artist/34ce571b-2b46-48d9-a874-ac2fd66a1bbe.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 0x2404b44aceb0cb8227b707b66b66c121c383f14cd4aa0ba6be75d426e7ebf775. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USA2P1389057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c970ed86a377067b2716350b1b7b013bef0f0f2cc44293a7ba0203b90079ae1. 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/USA2P1389058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea8642aee4d9ea1cff762f6f4a0aa2d781dcef5ff98cbf7d52957612f92dce. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USA2P1389060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44559f7598efebfee7c6e01d359d316a308fb37f3ddc000235abde97e4699c0e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA2P1389061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d4a56bacb9e8ffb8593a9fdb36ed4da9a10ed1eb6262b1590ffc3496fc06ce. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USTC40872841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058b2c2cce63404e75bccca90a2c1330a9fa3fb1ff606a5a3e0563502add4da6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USTC40872850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d4a56bacb9e8ffb8593a9fdb36ed4da9a10ed1eb6262b1590ffc3496fc06ce. 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/USTC40872841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058b2c2cce63404e75bccca90a2c1330a9fa3fb1ff606a5a3e0563502add4da6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USTC40872850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3787b964ab686b76a57f32761a148de7c44904bd338b9360d73b039729750e4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEBL60900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a9216e24721afa2c104ed73013427932e787b99a2e95c5c7220ecf73a67987. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEBL60900088.