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 0x0a08d58511ef0fceefafc59b1221d5361ef2fc3fcef7e127eeeb12657f68585c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67d1a5ab-eb91-494a-8893-ed8834a26a3d.json and https://artists.proofprofile.net/proofs/artist/67d1a5ab-eb91-494a-8893-ed8834a26a3d.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 0xb21d362233bfe6df870328fbdea00577ea37206f040ce9ded3864b9650ebc794. 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/CH7811113224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd00864e0b9b47dec8f55f4b299555afbd453ea06951a820be7f3639eee1729. 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/CH7811113225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bb9067f3745c868e0eea4458170eb2033ee4b520d86307dd58ed2d11f19d67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196cccab9309eb7cfe7e7768368b05e52488b56a4f3b22f57ff83c2f93fa095d. 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/QM6N22000305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3808e35493e203b1c595eb31954b76962e9fe85399cb90aebcc16b978e1e562e. 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/CH7811101345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a44d8f3c3be487808358827aae82ea178052f26ae17231f05ef80dc97d54cd. 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/USUYG1029108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d071220b689082cfe004d23d6987a53cf55b6321cdc44fc56ef49d26458800. 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/USUYG1029113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a791b298395832b72151d4966b34ab525decb7741dd7bfd4db5a9c8345d9d5. 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/USQY50954376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd5b585d1a78e08ed4f07b98d4b74e5fa4d5655c948c78d596c37c7af56673. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USL4R2347594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7227a70df9e790f2ab32496ac929e6497d5b74ccc5179ac1f836cf17c8716. 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/TCAHZ2435372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5b9ec7ddb9c3271e045907801b64e85778e5b40a55c57ff6ada28cf3433090. 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/TCAGW2355861.
Terminally Ill (feat. Tech N9ne, KXNG Crooked, Chino XL, Rittz & DJ Statik Selektah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2426ad1dda3c8c7354894d80d68048876d3a9befbe6364649b134f9938833207. 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/USZEG1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf835448bf161ec804b02ce62f53f1c96857bd17eaa0699bf6ca3c85e5cf26ac8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21964302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775d4fe0e27578ebf4d0eeac56f8dbc92a79c20fbf25eda850d7b301c0c1817. 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/USHM21964301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea789c7f472c0693c42e4534f8e270eee471359e3ac4ec3e6856960cfba54ea. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCADQ1871616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a5049eec1383058e52fc7358042a2b0366b9566029cb2ac3bb77abf35e629e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1100005.
King Kong (feat. DMX, Royce Da 5'9", KXNG Crooked & DJ Statik Selektah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3518f237465bac1d55c27e2d42d16a8e6acba370944c89918b41379157ea39c6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USZEG1800004.