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 0xda733a3675e18ac4565466072bd638901270caae1582e967dd350d27efb9bd63. 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/b12c1109-9da4-4aa8-9a68-205490f75cbf.json and https://artists.proofprofile.net/proofs/artist/b12c1109-9da4-4aa8-9a68-205490f75cbf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Little Do You Know - Nightcore Switching Vocals
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 0x9d4bd8db38346cf018f2d8ff9f5a9d65010a039758f5d2ddf37d917e1380d1cb. 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/UKZGC2307658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4385c92cc85bb5421cd8a0749b25c49a03586c640b1c9a0861adcb852f3135. 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/UKZGC2307659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f4a14ce13d2dfd750f12e27dd6daa8a3d74f3f0d9b7c97af2f665d95b3bde7. 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/UKZGC2307660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a68031475dbd6740b309548281ef917ce9629e59ea3210dbbfb4594b6798c. 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/UKZGC2308204.
Nothing's Gonna Change My Love For You - Sped Up + Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8121e7bc26ed75075f5443c05504f4b70773ee17ec151064549a9e825bbe964. 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/UKZGC2308545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1515c6a0f8165bc78ee8f948b9526595593de8ebc691f3e6eb570b1d829ad. 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/UKZGC2400481.
House With No Mirrors - Sped Up + Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69f1d7808ccfe9736e3028d73ea0ddcfdb5b31e2bb6c31002b4a71818ae22b0. 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/UKZGC2400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00078b6d6f7944b574e20f271618b96e24fddbf64931efd02d2b9584bd87e4f. 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/UKZGC2401594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fb903837be3f3b383d79812238fdc09ec7e1586122e306dd57fd583ead4c62. 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/UKZGC2401595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1761863b6c00ff9ebc0b9f9f33df16d2ba5f362671fd240a6004f7e39938f9. 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/UKZGC2401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b5716d57ff1ad34f99f16a8071feb9d11df2717c2a25b249048d4b9c8abc00. 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/UKZGC2401841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe304afb15950d8440e7712438b00c03ccf990ab79641356709e33df7ed694df0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DGA052564782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b1ed543e8c6db9e66d1aa6c52fff75c68386296d8bf4da65cd640ea1d50a58. 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/UKZGC2404885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66563df5aaa66d5732f2d507e4d0617acdaa4485ae4b3e0d4833fe166e45f1aa. 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/UKZGC2403176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b78f548cf801d0f2545ad02b6fabc698457b50d1e45de29c43861248ebc93d3. 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/UKZGC2403178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00a580e0454ef6dc1f137084e98c4fe5e9a14d17cfb6aa722f82f719300f291. 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/UKZGC2403173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa207b03bdbe0891073b1de2877cadfb1d4b83bffad586062f1148e19764f34b4. 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/UKZGC2401472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85110e8eeb3bede5f159f924607a56cfe4d94b41808a80b5cfdbabbeda100742. 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/UKZGC2309552.