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 0x337cd652f21240ff4002450ec5663ce61949349113d8073acd89197245faa390. 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/272b9557-f15a-412e-877e-cac2f7f47ddf.json and https://artists.proofprofile.net/proofs/artist/272b9557-f15a-412e-877e-cac2f7f47ddf.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 0x7204f287f5e82dcc2e2396ab58af39a10eabc21ad785602a74e745da79ce0cb1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:38:58Z), 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/USUYG1266547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade6dac4a6b23d2e6fc51c835270353f7a9b79b46c65ee692eb6ef4dd42162f0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:01Z), 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/USUYG1259461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b64cad88aa0a16361c1c5eb09030b022dd9d3e5675e289b9368652e415882d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1259464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb306bed47bd57ee9541ba723cf98437b928226af44a48483c0cb2b7aef48c50c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USUYG1285813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd8b55e2d0ff0c00ab3266c617dafdfdde63fb914bda5040675e7f02657321. 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/USLD91726418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3904e51717101a23328a0d7446e2bac9abeb6861e92fed83fdf35cde09a0a1e. 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/USLD91726070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b647e68bd7ea50058acaeebeea72a6c0a80377107602678a9f3604d1c85cd4e. 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/USLD91726423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8596a33674b8f469faa3dd5121ff2c6a9e404fe1168bae14fb98c5f28b8bd2fd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USQX92103006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c2be2e2cbdd65ab1b2f3d35d758722ee7cd51eef6f43e5673883dcbd98f66. 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/USQX92103169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c2b05b917c8944d3cdafc832c0554afa51233ed25435a99d3c25c40fd852bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQX92202250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c2b05b917c8944d3cdafc832c0554afa51233ed25435a99d3c25c40fd852bb. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USQX92202250.
Only The Family - Lil Durk Presents: Loyal Bros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e83662acf8a21ae71208185839e21935d6370919fd21f6e4ee43850eb8efa2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1360373.