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 0xe171fe75e02c9039ea09801d18e57bf80fb843d5d9128ca0b6de7750b5fdf5cb. 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/18f89b79-c189-4802-ad87-5211f58209fd.json and https://artists.proofprofile.net/proofs/artist/18f89b79-c189-4802-ad87-5211f58209fd.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 0xe416cc98e1dd5dd9edbab19bf1f056b909771633d873a1faaba6a02b42982cda. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBK6Y2151161.
Asking (feat. Clementine Douglas) - Joshwa Remix
Asking (feat. Clementine Douglas) [K Motionz Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0f0e0c43bf8340f8d02fbf031eac49ec1e831b88be412a09f7ec88fb96f33. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US39N2311949.
Asking (feat. Clementine Douglas) [Chill Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0f0e0c43bf8340f8d02fbf031eac49ec1e831b88be412a09f7ec88fb96f33. 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/US39N2311949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2de6d0b91fea5be61e3be03881033e34053728580a7ceec6ad5714fb43e801f. 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/GBK6Y2251241.
Asking (feat. Clementine Douglas) [Tiësto Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0f0e0c43bf8340f8d02fbf031eac49ec1e831b88be412a09f7ec88fb96f33. 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/US39N2311949.
Asking (feat. Clementine Douglas) [Joshwa Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0f0e0c43bf8340f8d02fbf031eac49ec1e831b88be412a09f7ec88fb96f33. 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/US39N2311949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2505dca5f28aae35543472c6c6b81d3dc18f7a7fce3aa1d501613f3fadd81. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GB8KE2155888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e2b5581a4bdd6b48a11f2c2163159f85c9da87bfe19d2bc055c09e7da7e6d. 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/GB8KE2154164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9758ac2e4c59f3c1b997869eabb08716800a59a981d3d7da0119f62dc7f03d. 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/GBAYE2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74764f4c83fa83e63a24d111b38197ac381b0fd124f58b44cc4554c321c50b68. 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/NL8RL2414207.
All Around The World (with Duckwrth) - Joshwa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90666550f9ba1f9f826eb110eecc010d55e1c6ebd18b823fa4b632b8cf985a8e. 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/QZUCN2200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dc9170f1465232d23b17a47a0bfd132dafca152febaf784b777998935e9b56. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUS12200541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfada5b802ad8ab3244bbc1faebad1fa90d4d4f5c33893450af5ec9966b2f8. 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/USUS12200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1423d9fe0b423d839297785d67c3413500df2ee7095bf440150098e07bba523. 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/NLRD52319357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67fdc93cba01b58bd76dac0df34095a2c598511a05332cae82f796fdd88276. 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/GBHAD2002438.
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