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 0x7b1652d154611530f3aff50070080a55c5e20df98a02255ad3d369b780d6a9c0. 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/bf393379-a3a5-40be-a688-1c637f835f6c.json and https://artists.proofprofile.net/proofs/artist/bf393379-a3a5-40be-a688-1c637f835f6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trance World, Vol. 12 (The Full Versions)
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 0xc0e13066bcf9369d57d7bf66c7815addbfcb22f047c917bff7d6e2ca6e7a6d77. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLF711102484.
Always Loved, Never Forgotten - The Day Will Come
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61971bca3c07a378d4469188b06e19041cd102b73ab4e891068570de35c2f9. 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/NLF711205747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eecba9f6f323b1ddc7d9db3b727b41f82fdd6f73478bfe06ec75e70e6aabd08. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NLF711308208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeffea3139154573d5bfd3eb8ae247fcf06b389371e1ed05690be320f5c97d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLC731410164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe681921327cce63c41ea78695ca38a60f5795afcc7e9374d8f93ef03a6512df3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/NLC731410431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca06a6221554fcb9e54a6707d8f03fab4e61e3c6656d804d2ed24125586f86. 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/NLF711405711.
Where Do We Begin (Sunset & Saad Ayub Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dbf65dcd377651ccf19fafaa619ea217e676b33b5f7a02c99ba4377b505af7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLF711810929.
Where Do We Begin - Vigel Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a2f05cd15e41ba3755615bf4c89ee2e030d25ed1991600d2afd9474947eec7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLF711810930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5e1c2a5144353bf8d38f0593f647e149839f34f242c21559a421294cf3e060. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/NLF711903685.
Lounge Top 100 (The Ultimate Lounge Experience - In The Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c84c725d5344a0ca9631dd540adc1f8dbc0ae8b53a4f2f734d28cf081c0e6d. 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/NLF711102476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b534e75fc731bc26bd3a1ced9bb9c39b1fe37c0c84106d7c0cfbec30473afc9. 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/NLF710903047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ece91925a8aa7958dae0ee8fc96011207cd912e9d7b6738377127ab5e20c50c. 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/NLE711800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25dfdfa825c19adb75e4d11b210a2ce7f5c167fb59b0daee41709c8c2b30ed5. 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/NLF711103147.