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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70df95cf2ffa4427611c43c392f3c6a5fdecfe91a08aae30ce28aa7e4f468e8. 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/0d232426-2c70-4e72-9e41-6708d8a8b6f2.json and https://artists.proofprofile.net/proofs/artist/0d232426-2c70-4e72-9e41-6708d8a8b6f2.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870ea3b4aecb5d9162820d3a66c4b376cb958b296efade85dc08209779eb913. 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/USDHM1216267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f59b18204edd3b65e68b98bb4cd8a362449f1e25584d8c6216fee33cfe3373e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USDHM1216271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fb77e5d11d60bc6848cafc58a93b3d4c9114af79e6475f715524b65e33c82b. 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/SEXEN2000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6f6582ed48796649709c04dc6e198d911d7f7ab29937188a131d121883c20d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRHYL1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1f79f8a270258ecd83fc299746de810ed62e8d6db0bad8596826c059691a06. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRHYL1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709d74ff9a0fbf332184f45e5470e7c5077064590d98986899b8639610353199. 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/SEXEN2101302.
The End You'll Only Know At the End - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87cdd83c3a7a733c5173d9c55ab19f8ed93e1f07ed8b5bc63aa993b624a809. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEXEN2101303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27c12652d629cd2e3a05655daa6bcfe37fc3e15f0d25bc54714a7f2bfa62d32. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEXEN2101304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e700fa71bffd732761cf78afec2804b10cd8edf98c8d401753e59441f23c2a9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SEXEN2101307.
Into the Arc of Time (Haamiah's Fall) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a302babac45e71ede1621aaa8c9b0664f9ae8a0511edb96e1b76e2da1aec536. 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/SEXEN2101312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb166cd172c81ba5ddb8134b0dbc0705f0845e3a6568d093f40ee14b3a0d45eb8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEXEN2101313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5ccf28e46d86bbb26b9751834879ce5109d702f1e2be9b24b87da0f8679860. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/SEXEN2101317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968f8b9ceade1bf0af96b96216e7fa916a80319cfda957bf3dd7c46f33f2614. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEXEN2101321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab806fe93fa1587806fe2719c334e845f76401b9604e5665d27fdecf74a489. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/SEXEN2101323.