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 0x16e14aeeb0489b6494ca875b7fc38fa241349980a9a08a91e0f5b0017f2ae09d. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1277a03b-fe6b-455d-bc47-57a3fa145d70.json and https://artists.proofprofile.net/proofs/artist/1277a03b-fe6b-455d-bc47-57a3fa145d70.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 0x96fa726b658c78a583e6f0ddaf5a5aa4c473d8df5bca31517c659c4574a0727e. 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/DEW872404251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14c4f0650b95a5f49c5cb7e9a0f24efc0e4d55e6e31e2ec63c048d541484e8. 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/DEEE72401776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a3a2fe88002b069d62c9ea5bca05eadd05e442f35082315b1e5ac958b57497. 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/DEEE72401777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d99c60ff037889f567fe7bf43786bbcef23ee02f34ca4bb49e30a3aa00b8528. 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/US83Z2339575.
Berlin Underground Deep House, Tech House, Techno & Minimal #2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe78c0124074b5cc329d2d1e54eb6e3231bfcea40b7ba0acc9daf0884bf4169b. 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/DEH741912332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d02cc4780983fdd2fac6099ed670618a1a8dd7ff76945b6befc211ee4f9e64f. 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/DEH741908610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f521418beb5a6259db5996153a5d0b32cb5c707a7b29cecb6c6cf23ac963e5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEH741808069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f66ce57b362cc00aa8d8a9ef1af7b8d1419b0fdb81fa5b3ea8d0248ea1e65f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEH741912328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81c217d00d237f92076dfa005c3fb1723b56f9d4676ef100ae6513937962841. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEH741808064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d33ec69fd01252dab65dcfa380c781946c68dbf6b090b18cfb76ebbd18769. 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/DEH742000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efd521e7fc22be8dd0b43be84c9ea3034dd2596c6d9256e6d3e7b9a3b94df5a. 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/DEH741651074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf3b1aa41ceb783998611729e0b0da90bdb0096a57820a75c2ec4c82e4e0461. 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/DEH741808063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3820530061b2149ad493b3aa3b4b113d5ea8a8bda48629e3bc749eb28c015777. 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/DEBY71700218.
Nothing But... Progressive Vibes, Vol. 14
Zuckerschlecken, Vol. 13 (Sweet Electronic Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f36460a7751fdea1d76a6d0cec48d7593a6a90ffd285a0068d22c90c01f65d. 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/US83Z2421846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993f90d244d10e89b79f5e0c8378feb3d4df35f152ac137449be0454aa8d53d6. 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/US83Z2421847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23a7a108ffd338d943eb95b021d52702dbb43c93a74f9b2da7ba78bb0b60e1e. 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/US83Z2422926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5a556d03c75ae7798a2db6d4e87ca2b453ece180720fcf59312536511f4f26. 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/US83Z2422930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961ae32268b44fede86a6e7f99dc7193f446336dd19b3eb625aa8070099105e. 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/US83Z2428411.
Voltaire Music Pres. Afrostatic, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21527ccd5165b6f24859bbc04a4ad3e10a17136179d58a6426c4b4ec339db96. 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/DEW872405274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15133e0e0c2333247b5f9af18db51868f247316a06b8512e6705abeed8baafb. 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/GBLV62305523.
Berlin Underground #3 (Deep House, Tech House, Techno & Minimal)