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 0xfa35b4651e1d1dacd39b67582b2269394b11a68d10f243eae75af346d51a6ba3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ad61545-966e-453f-83d3-b68a6a26e4fe.json and https://artists.proofprofile.net/proofs/artist/4ad61545-966e-453f-83d3-b68a6a26e4fe.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 0x09cec2183e3db4247e966b5bbd8c07a473959e4b8c99d33bf0aa5b7b2e1ada0a. 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/GBKQU1999461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8603beff3e18c68efa5ec3b748f425352a3c6ea1e421482704446ccb49983e9. 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/AUXN22041202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369caffdba4f741c33bce4aeb301bff9d70792509dd4221d99d8d78da501a90f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BEB682000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0b662c8ca27fd3443ddd955caa39aa84b22483fde502e126092ad9bf0119d1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BEB682100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b0495bf32583dd1c66b8c8535e41e5a597c3386a544decc007f889ec958201. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLZ542200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66590c8cca381bf29fcd14dad090d306a6d30083176e820161c70c7c9ed46a8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZTRX2270416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c2bebd5871936f6ecb4d2e8f93063b518b113f06dc91761391ef673d25097. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FXQ692300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58dbf88293ecf3abf707e36887d0d1faea5db57bc1e528a77e5de00bebe6c5c. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZTRX2300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0b698741124e23522083f68a603942caf682abb3dee6bc7afe643d8ab8fbb7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWDW2391329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0b698741124e23522083f68a603942caf682abb3dee6bc7afe643d8ab8fbb7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZWDW2391329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27284998c12c00b8b49871bf1d3de3da7dea6037ffd316c6dc994dbf40a8bd41. 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/FXQ692400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259511ba616f1791057756203d69b6b4dc3d05b9dee17a22f5af837673ab190c. 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/FXQ692400174.
Hard Techno Rave - Acid Asian & Zentryc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850f203d014f8096ba8ee395790cbd6666c373ed4f34f6ee655ae17811a963a. 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/FXQ692400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bbf72352ff580fe7b9620fa847dfdea1fa407730901673008da7e91eda4b89. 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/NLH2L2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b595fff144c58937c87c344dddf1ffce6fabda3f4527030cf5e1421c455359. 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/BEIW12100091.
Lights (D-Stroyer Remix) (feat. Nick McWilliams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c370ea19141c0d4443820d3ef27ece1b61c9ceafddd2fa4153c2018d20dfa31. 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/BXHBP1901113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad63b70ab3d2184ff31616ffc6555d7532480eca095f09205af890352655342. 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/NLZ542101884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91b86c702c525f10973ca6bc64a4486653578476ba5c966edea702f071afde. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLQ8D2101148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7711f62cded1e5496ab971f69341c7879a08a2cc61667605b19658aaf9fda6. 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/USANG2019952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccb02177715941094fd3a9da4005efda867f9a3f5647d86ed75d0692a1ac1f3. 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/GBRKQ2001840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c706555f838f0bf79d9cc177b2bc537a1a2cbde9ae52bb2adb0c2b276679f1f. 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/USLZJ1646654.