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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c7ed91a20d12f1a6cdf32b26e6bb6583c7ff0197fff22b16c282d8c4e86e71. 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/f203e42c-f9f9-49ec-847c-7ac33397531b.json and https://artists.proofprofile.net/proofs/artist/f203e42c-f9f9-49ec-847c-7ac33397531b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9d9d04ac37ed278314e5a3318dc5ff22c7c8ab5d5b76b9b891b16593db0ae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEH330601721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1627e7c1c30090df491a48873b3d5df841db68da8a0976a724cfb78487da1762. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:18Z), 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/DEH330600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba05892c4066730d9f578c585ce26a2c746ed7604066ac7156aa6e515eac9bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEH330601851.
The Lounge Room Vol.2 (Jazz Chill Goodies)
The Lounge Room, Vol. 2 (Jazz Chill Goodies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ee35a4f0fad21eb5a034ba57668a7ee18d737308166e1c7bcfb7b08642b76. 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/DEH330701949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c872fc6980e6cff4177e721a36a287b155eeefc00fae75c39a8fb8e1815095e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEH330902129.
Something Like the Journey - Floating Trip Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcadbd872a957c032f5c5998290619d904c0289bd80234aca317e0706eecdc0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:07Z), 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/DEH330802067.
Never Ending Things - Da Funky Operator Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db3551473195d55b78e59f8bd28a2e05cfe106671b428b1b1b9ecbbd5cdc023. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEH330601858.
Maretimo Sessions: Sunset Del Mar - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1bb96ed2f0704d419ad9b22660a303c25d623758e6eb4eb09ac43f805f4343. 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/DEH331002370.
Maretimo Records – Masterpieces, Vol. 1 (The Wonderful World of Lounge Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcccefd8e2fb04bd8d263e166563fc008fae57826740e0ced6d7a034df508ca0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:56:02Z), 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/DEH330902151.
Maretimo Sessions: The Lounge Playlist, Vol. 1 - Jazz Lounge Music Deluxe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e36bec302ab39e908acb612d6f11712f5f4d9378807a3ae478e514d1b47352. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:18:41Z), 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/DEH331002366.
Mykonos Chillout Café, Vol. 5 (Feelings Del Mar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1bb96ed2f0704d419ad9b22660a303c25d623758e6eb4eb09ac43f805f4343. 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/DEH331002370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d510f0bfd00070e07a5b8ed5a02ae8f90c11ed0a6ed4a92700fc161c0d2a02. 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/DEH331002364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f5f48e27c0accda334c75c221c51742878bdac6916de639aa2ee1c9816e2f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEH331002365.
Maretimo Sessions - Edition Mykonos - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9d9d04ac37ed278314e5a3318dc5ff22c7c8ab5d5b76b9b891b16593db0ae. 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/DEH330601721.
Best of Del Mar, Vol. 2 - 50 Beautiful Chill Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f5f48e27c0accda334c75c221c51742878bdac6916de639aa2ee1c9816e2f1. 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/DEH331002365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b0b641d32e9cbbd9490348372b39cd14429fcd499fbef1cf10098db34dc92b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEH330701951.
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 0x6b9cf7c3b6f08911becac5cf6df510a40de43d3ee3a0d0554c48e93248a22c7f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEH331002368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66439cfad61712b94f77ca66f66622f445fe3997fdc1fa81cadf3a8c066f32b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEH331002379.
Vladi Strecker Presents: Sax and the City - Saxophone Lounge Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1a52bb6cb57e6d878be9765eaaefb6b2f680037a22ed56e3aa552ff67f5734. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEH331503041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e2e491410ced553338322804fff4ef518af3645aef0f66d3d9873c821041c. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/DEH331002378.
Spring Lounge 2013 (Sounds Like Sunshine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63510d4b0ad178869c96c9e9ad61e539b424583e3694710d7bbe055bc3a15c68. 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/DEH330802079.