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 0x236db4a7b43458fff69740c4284daf1006b25549103e8d2b3b849265d1ad32a6. 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/7dbd3ae3-a07d-4e37-93c5-88655cc1683a.json and https://artists.proofprofile.net/proofs/artist/7dbd3ae3-a07d-4e37-93c5-88655cc1683a.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 0x25bc62cf2cc9078a280f873c2982c200fdbd9dbcae5c29fae1c47c239e4e935d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNMU2219605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c69dc72caf8e9ffc18abb7ad96bd26f695c57213f25ea4f791462487aae266. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFK2164377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd2360005dcff50f05ceaecc3d6b4cb52cd65af220f5807661a8a5bab19ce10. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAES2013631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6245053ec88a59eeb5f0ca012ea54e0eafde2c63d3fcf71394970d69f2ee4f01. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAEG1929964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e255c1dd64c84cccb82d46041a13405cdf8d1e81b5d69ab4cf3ab42bfb97ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADT1881028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c1b5dc0c398620d87460d66a8c107852aafabbafb11a2d33c11351b0218e18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX92303171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d05883847e6dfd9fbd0e3478398e8217927e80e138621934d78b7904198eea9. 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/USQX92306426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36250da4d5d24b076ca92b96265eddd98292cd9eb59cd02889fce3336d8200. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1453836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392c1080035b90b96866c05a563d35b2c79e50b986476685060907d860142d26. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUYG1460593.
Only The Family - Lil Durk Presents: Loyal Bros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab650baea44d9f5e8acf308eb60be7881fd75e01013ea9445cb1e9879c5b47. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1360358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f461f7761b60bbcdc8cf154da4c90ee1312d95e11049db4b2c4ee1a9463dd5. 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/USUYG1360364.