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 0x2c61637a48e19f714a05835fad30e57f95b2a66a66d7ae568d2fc863e386c127. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b54a116-7dbb-4c21-9cb8-c4562d7e1256.json and https://artists.proofprofile.net/proofs/artist/9b54a116-7dbb-4c21-9cb8-c4562d7e1256.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 0x463d33bff1d177dd3aa59ad952a92c49c17e399c9e16e9c5107e055918b4fe0d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USA561042339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d57b1a918a792708d565309a3bcf96421ef71c651c01230ff7e0e24d745c4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHKR0973119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a8f884a406ebdba17729fb8b36f18b0e2a6536bde2f9f8fabaf58d719824fb. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZES71990368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b20f78359cef5636bdc90251509ac6b0f305dd8edd67209a0c6062a78f4319. 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/TCADF1798729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3726834284a5edb0beac171de2c7d394d63566f36f8d1bb4c2feb22654ec8a67. 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/TCADF1798732.
Here We Are (feat. Soulstice, Main Flow) [Cuts by Dj Nixon]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b547f58a34d642dbc5a9177ac070c8644e1ef03b00c390c9d975a1ca4ebddb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRPI32200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997764b006f8789c1a6e77b214c3cd3aed2ac9027f2e96a5da5cab3cc80120be. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/AUGBT2315081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0ef3b2eff324f786a420026febec9270677d9d76510a10fc0510e24e8113ac. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNB2414481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833401eea2686f0e64515a38ce2aeb3c476772b4203fd2efdbb49f5563e620b9. 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/QZDA81892735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb829f4a50c7fb2c11a33615b010c3cb60254ed467a514ed2f0699be23096d79. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA2P1202777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d6be87f7ae47d4fe045f323a6f387cc234e73fa78a21d06e191a71856f31d8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZWFW2417899.
East Coast Avengers present DC the MIDI Alien : Avengers Airwaves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f281d38786f32f2aa7ce7c74532a6ac878f3b48017abe6af63e9a188dfa28. 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/US4UZ1110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1763f61671c3fc57d845a45871abb45588524ab2ce318a011f3ba27243eb908c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US4UZ1110006.