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 0x61d4293d3deaa0a527d7a8c23f00043412683347a40902c889d2029d3b80e4d8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34458bf9-3eca-4d39-b9e4-14c4c27495cf.json and https://artists.proofprofile.net/proofs/artist/34458bf9-3eca-4d39-b9e4-14c4c27495cf.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 0x5e5a0380a68859388d8e8119dbe727b68d88a87f6fab8b9e2925d6527b9c145f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:06Z), 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/HKG731738291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf9e9de9a1a25bfc035654fdba8d6410874799f79aa76769de9db308504d8c1. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/FRX762292403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7afe0aefa49f65aad5a3064aa92b3c040320b760ec56ce3210b0c6df1536e9d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CNZ632300725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e958cbbded80d4daa3a61fccb5e630cbbfde7f4a10bf2cc263ce00c0a49b2b3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NL8RL2420270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884458a3d3a551220915a44983b5063fb1bed13516bca8a6f03be9ebf3d3a08. 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/NL8RL2420271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd3670408df5a991a3222d7a7d583ad9fb28ac1c7ba14fd2297033d5e3efeb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKD012377391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb378bde3e88a1a63931028abfeeb952a863a9c38d349bedd5c0c916c79f9bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CNZ632301283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931184de3f0214cef4a2a81495b0a3cdf9f2009a0e5dd9648c38b07c3e7f7c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKG732424401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01823a3af2fec861d4cc0d4b25d429b1631d0c1d9981415dc9c22dcf996a535e. 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/QNSM12400766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd190c8c460add70e7b17e9108c26a9b84201162b46ef7a2c902cabe67722238e. 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/QNSM12400813.