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 0xb019e06b36125ba172e2278926a9372c8a181c927473795d778ce478d991df60. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7711ab62-99e3-4d5a-bb79-c5e4f2e85f5a.json and https://artists.proofprofile.net/proofs/artist/7711ab62-99e3-4d5a-bb79-c5e4f2e85f5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Been There Done That (feat. Rich The Factor)
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 0x5b98ec33c75b5a1bd420c0df28e65e858fc5f0386891d1a7afc93922c6f43002. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USUYG1322542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f2469aedbe5112f8e6efc7eca08e91aaf90edd53de581ea52c924dcabeaa69. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USUYG1322543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ff64238f9d1ba0a282dfe962fad0e4cfd24d877a33361d44e0ff4c3983d471. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:45Z), 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/USUYG1322544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1299096de9fb68a580828d6889975c51cf4a5595a30e87d953e5b2ca56444363. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USUYG1322546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc85f8a15fcb46dae71bf80617e9599ab5c8eca3b1b56c29574915cabe6b299. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:12:15Z), 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/USUYG1322547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ca827f4f41dc99212efeeb5f7ab5b3e75c1cd5dac6222b4d69a2dbd119c951. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USUYG1322550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2c45770e940429b4d0c4bb932acd1e7c072c420ed3ae57bbafa98e2819187b. 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/USUYG1303722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48df976e3a4823653fa99df56f69162d00a8a84218d6be5f270243dce4b574cb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USUYG1315879.
Million Dollar Cup 2 (Back To The Kitchen)