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 0x15c410874daa2ec1218e2d4fba45749a9e5225c2b520dba4756c3ab17dc7c36b. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8285309-cabc-48ff-bdef-21d4dafd83fd.json and https://artists.proofprofile.net/proofs/artist/a8285309-cabc-48ff-bdef-21d4dafd83fd.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 0xec5137fe2fb7c69f6d43324b659c02babb7ca2bc24f7d8e5960d3a5cd58a4aa3. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEBE71500302.
Get Physical Music Presents: Ibiza 2016 - Mixed by Roland Leesker
My Warehouse (DJ Pierre's Wild Pitch Remix)
Get Physical Presents: Acid Love - Compiled & Mixed by Roland Leesker
I Feel Love - 1979 Disco Club Mix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dec8d51d74c8a869c231eab5e0d6d16b9df32933a0d1855a7a7ce1e8e854fd. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEBE71700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3102a28313169ec383206a4b300fd4ebe6da89d9ad27f0cc339605eab1aea5ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBE71900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4c097907f6922dd01d35dbe0d314b24a225ae84d673d23111bffcbb9dbf277. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEBE72200737.
Dancing In The Night - Roland Leesker's Ba Ba Ba Bam Edit - Mixed - 20 x Get Physical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7b0f64e4a4f8a4c5a28be43ee11b729ba86424298688d683737deacd43891. 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/DEBE72200739.
Heater - FNX Omar Remix - Mixed - 20 x Get Physical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b61eb8ebcb0dbd1577410fdf597f0c5c18ade9c111b18f06b4ce6aa41535612. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEBE72200742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4158aba98629d1f1bfa0c1f4f0e7caa14ae33242ef829f1aed30ed33a78efd3. 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/DEBE72200743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2169944aed24e8f8d6e268168c60c64c78efc1597d74031c942d52f5a1fb858d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEBE72400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02fc04fc075a3f71a1d21393831a3aba12fbe96944020c10c20d47f1ebdbc03. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEBE72400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d9eb154d3bc59ca8bce3883ea48b5a41bf0d91c82f9892ddbd5e811f11143f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEBE72400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39887cbbcb169f701d18c773b970e6dcf8f9c057eae4168aacf31c5379a7ca9. 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/DEBE72400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d59d8336ad3fed69a0b9e4190bfb4976dad74f0b1b09f6e4485dea041d418f. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEBE72400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b1e86dc48ed829f93b76a9725710811e00c1063e5140a3eafe63d2e65c102e. 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/DEBE72200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b153b5181af747416503cef22172a4929d53d5e9806e4e30f7084bcb44921de. 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/DEBE72400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2169944aed24e8f8d6e268168c60c64c78efc1597d74031c942d52f5a1fb858d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEBE72400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02fc04fc075a3f71a1d21393831a3aba12fbe96944020c10c20d47f1ebdbc03. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEBE72400414.
OD 30 - Acoustic Remix - Mixed - June 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a41d62011da6ef9f7e16e9cce0dbec4359c188c592182efa946b6e5ec41058. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEBE72500437.
Sonus - Ian Pooley's All Live Remix - Mixed - June 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b78e461f049eeaea6684ed5fcd81eba656d217af0bf7443c0ede028e3b8dfa. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/DEBE72500439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbf4bfa682ea4d4dc9ce0ae35f9dad4164f4ed7e9b0888acfde6c5d451c2dbe. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEBE72500441.
Impermanent - Francesco Tristano Body Language Mix - Mixed - June 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab574d652c6bfd00d1d48963d96c6320d02e366a0dc277502d74d7036c7d1aa. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEBE72500445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e11bab1b2e53a6e9876a5178be6d2a603a27b58637fa174ed736fa8c9d956b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEBE72500446.
Dancing In The Night - Roland Leesker's Ba Ba Ba Bam Edit - Mixed - December 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326abce12f741ad1a1e39fb19a63bcd37b8b26ac4f5453a61d0ad122787c4ae5. 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/DEBE72200830.
What Is House Muzik - Roland Leesker LoveMix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9f22d0be0cedf77bd60785c6118c1fa969adce385714c7e3c6490ca268a4c4. 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/DEBE71400263.