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 0xf2bed614c94f3d9ab95a8d7861dcf789e5f941a608eed6a5684c1af202a13bca. 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/669e3cff-269f-45f5-9468-ad322557f960.json and https://artists.proofprofile.net/proofs/artist/669e3cff-269f-45f5-9468-ad322557f960.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Little Fantasy - Bass-D & King Matthew Remix
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 0x84b99387e7b537c77c89e8c6274ace6d4f376cca0c053dd7659ddb5a2c9f557d. 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/NLE802200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8409ed06c25f16a28af8df3dce4f58ff7c9c0f66f7219fa7e9a0a626a02069d. 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/NLS241000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5752bf84d8deba8503c64eb2bf2ca9b0e43d1e84f88c5dcea76b2bf142f0c3. 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/NLE801000478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17423487e6f71ae1da54504b1e83a90a19a69bf0659d11caba01aeb6ea6a00. 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/NLS160700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cd758cd22d6e4577bd3d00184547bdfae35cdca7b014fc57f973bf438fd35a. 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/NLS160701355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8409ed06c25f16a28af8df3dce4f58ff7c9c0f66f7219fa7e9a0a626a02069d. 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/NLS241000059.
Masters Of Hardcore - Temple Of Resonance (Chapter XLVII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9818f55577c00393534ef54a50fe2381c94c892244c84818e8fe2332b9095b99. 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/NLS241103054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25885e5cca2ed0d387cca752e983b24d29bb01452b1f6bdbca387186078f4889. 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/NLS241103055.
Ultimate Sextrack - Bass D & King Matthew Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce0e960d7a34ce9ae04d18b00f7cf0a329cca92a49ebbbf47ba63800e39c75b. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/NLS241502996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a840aef5945a18ab026afa7bf67904deb5ddf253832f8159f06151121f15e2. 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/NLFL72100791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a9bdde3904514c14eb12f508f83182e82f19985399f654043311320e7b52ff. 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/NLE801616023.
Raveworld - Bass- D & King Matthew Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5b5f00c50568a0912745f8eca8b764604a69838a90ae1c2c2008072f2c74ed. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLS161801660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17423487e6f71ae1da54504b1e83a90a19a69bf0659d11caba01aeb6ea6a00. 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/NLS160700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cd758cd22d6e4577bd3d00184547bdfae35cdca7b014fc57f973bf438fd35a. 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/NLS160701355.
Megarave Records 25 Years - The Lost Vinyls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c17423487e6f71ae1da54504b1e83a90a19a69bf0659d11caba01aeb6ea6a00. 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/NLS160700810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb267350e142b00084bb4f3c358fcb274fd14358e2cf374d4ae30971644ba31. 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/NLS161802462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c424fc32e1dbe06890043945e90de7e8fe87e0f22abadf25cd168fbbb7c295d. 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/NLS161802466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cb2a17ffa9f5e0fbebda01aa9e32105d865cfd49c568d2cc905cc03f491f9d. 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/NLS241200835.