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 0xb27b4a799f946ce103f66ec65c16156a1e500a27e45af13bad8fc2fb3ea06eef. 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/415a20cc-949c-4c72-98c1-a152879abea3.json and https://artists.proofprofile.net/proofs/artist/415a20cc-949c-4c72-98c1-a152879abea3.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 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 0x2f38ab7685c2fdb201ea76e91fa7cad021a139658219a7e14ee79f1c4cc583f7. 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/NLS160701569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240de0b2b400d571a0081697f8d94c646a863b8fccbf9a20e0bbfa5fc1ff4e62. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLS160701025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02af8da3f673d769fbd396e2791b3090bbce1e990b0140c8cd66f13711451de4. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLS160700045.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db087acbd32b9a4d3925dcabeb7827543b98e9b445c70d26e7e2d4ca26fc33. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/NLS161801484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292a8faa42710c3e0fa0225dff712afd58b064aef079130dcce94d9647224f5. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLS161801499.
Fear (2019 Remaster) - Reactor & Raoul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf882266fa632efe5fa589a96d07a52b7f3f6ea9cb4f7c863caf9925a43b57476. 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/NLS161801500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2698d928422da519a5657c1627ca58e987691af5be5ade3509ce9808e562a8d4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLS161801501.
Megarave Records 25 Years - The Lost Vinyls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8b3cffb8661169246d188e872113a1da9d1f21d200637d1ba049a336cf91aa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLS160700484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546a8f004d1296914c8e7902b0801801b9cc131c660a51c12743e021728826db. 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/NLS160700474.
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 0xa6be95c215c671d37e00cc5b925eb523ed147f1e2f52fc5c4fdc3669c264c775. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/NLS160800154.
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 0x6e9a37b08faeb1ab5436e8102f23b5836a4d079fc2729de97474900283b2ea66. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLS161100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be95c215c671d37e00cc5b925eb523ed147f1e2f52fc5c4fdc3669c264c775. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLS160800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3b0de7a051d4ce6a3be1e92e7fcf5ab02190589698a29fa553347cf78fff70. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLS161100233.