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 0x2cbde57c60b9de67fdd7beb32bc2e9b3ab7342a9eb42c8af07e5b8f6abbd8a54. 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/05763287-6b73-4f3f-8992-23cd814b150b.json and https://artists.proofprofile.net/proofs/artist/05763287-6b73-4f3f-8992-23cd814b150b.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 0x0a76946e9b79e3165c844b6f0a66b66df7c8c578ce4d2252546e2f8db2ad9ca6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUUM72100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e264feaf2672f4cbf59118d8a737bb9c0868e2e9a4f076011d46e28f154e81b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HUB312400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92144fa32ff2f291f629351ee339c89140b9d45055a80523aa3a03d3bb2ca933. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUB312400028.
Menekülés (Early SKA Tunes from 1987-1990)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545e3ef9f34c8847d3e2d96868f300b3e15e5ac1f8a374e4632cb1b0cfb3cbd5. 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/HUA253784001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91603520dcb2f267933587778d27b1fd4503aabd25a9a103fd6a935927cdbbf. 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/HUA253784002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc986f39f31ff4e024ae8ec5e4a93ccc3060999be1cee15b19b9bb0790b9722d. 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/HUA253784003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60673141e4eec3517142e1c73fc3ad9dd4cc494c99558f7ce4988cb2d3f7c93b. 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/HUA253784004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3abd24d0b27c6c26ddcdb4e98289f5f4de3c6916ef7ed6952db8b1e5c09ce9e. 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/HUA253784005.
Get Up, Stand Up - Punky Reggae Party - War - No More Trouble - Exodus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4325858dbe7e49de8d3195442eb2fb3186f50c599d623b8b54010954888deb33. 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/HUA253784006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b3e709e6812a600a72c8fe032c53e02f442a4e46cd9fba17b2e0b2b8cbe96. 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/HUA253784007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0e718a08fbae0d8b27a5b2ddaf89cccbef4833823b4df3da901a8c3dc8d620. 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/HUA253784008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9d645308eeb8856a175d5510664d1a4922bffa7825a485cea01f5665a3d6f5. 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/HUA253784009.
Coming in form the Cold: Coming in from the Cold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a15107fdfeb75e32a09e9f56b1ebe7bfd8c6f4a86cabd44181f83f2afad2e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA253784010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ef38bbc83aaa2cb1330c778fe3109be5f2d7557a30de133519c0b949b58e44. 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/HUA253784011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46c566db5bd58654363ede05402e83cf7d7c70664664a47e4c83f6dc3e588d. 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/HUA253784012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e28fff6c02206e0b77c398eb1d1cece23289f73315adf1cae818e57115b70b. 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/HUA253784013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9f4cc414c8feebed1e109d8c33259b4372a3c8f3ad423f033baa260984542. 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/HUA253784014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cd66516d932b742d02db4337f1f4a4b4ca6845389f48b0169218d43f007847. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA253784015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381abd169152c16fc7ec714308f9ebe0bdeca8af3868f968ab3a638b766fa18a. 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/HUA000500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a3d4eb2a66afb7f031258481011de34c4e3622e5ad66d360fe84bce36b0142. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HUAJK1900014.
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