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 0x94860195b9da8e9705ec2aa575da1155e9b6e90326c6d9a534b49eda17792183. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8135816-6722-478e-ba89-c2c193b5cf5d.json and https://artists.proofprofile.net/proofs/artist/d8135816-6722-478e-ba89-c2c193b5cf5d.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 0x84e33afb914b4f4cc13dc5cee33f3798a3db27ae213ef0920faff06708b3ebb9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UK34N1800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec920dca8b8dc921d959a1d5db874c97038660d3e1f95d288a13cf153ced9bf5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLL562008974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9129cc2214e465264ca6a138452acba17faa2af95682a230b5b69e93619592. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:28:53Z), 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/NLL562008975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56028a19faaf1af99e6febaad437e179a92e4fe94fe5e4be79580878d18ec163. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NLL562008969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91483f7a9a5e791a13746968038acb023c2a8adc2c553f58edb669789077e8d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:18:19Z), 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/FR96X2193085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133bbccb59293b70c7d3f33cba7d82cebb5ec5d865a5b3c272ad36f4fabc8399. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX202131648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311873ac75d6efa14475ad219d69cb98bfbc644bcb2cf22bb7e60fd662bff494. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FRX762135655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7848b80ec9cea108ceb37ce4d38467cf3f1e7f29161424ad94d0b6dcd162ab76. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/FRX282295583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759ca123ef5f30ae9f8accbafc6f6f6f561f7524fac309ef806df11ed4f4e360. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX282295584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4985d4fe429274c9b3136438c01b8202cc18d78105966ac6ab7652bcc4d195bb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX282295588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694f3f586c6102d767c55eec953dfa68126bc4674a317f1a2ef3230889bc33f5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:39:43Z), 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/US2J72415802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819099ee81d0a7b90d778c5cfb39f8e8a183295cb56807d96999a55b8012797e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:04:41Z), 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/US2J72415803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ca1cb7ca4e8fd9c17fd87268db617607e156937910c175eb36cd9e8094a3e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA062496106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236556b1867ebdeb8b12dfd1db471d03acb6c000c8d0caeacd35a58682515480. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA062496107.
People Are Good - Ludwig A.F. Heaven Help Us Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5c33a6de1fd4581a8c9c8605f4d6ce1e04f456ffa0fb20f484a2f86033610e. 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/USQX92400342.
Trip 2 Fantasy - Ludwig A.F. Floor Destruction Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68204e4b3f8f0f02d991a8d989726b17b171afc657bc28ac90e2ceb4ed8fd3a4. 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/NL1MT2000094.
Café del Mar Ibiza Chillout Mix II (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e8f2c929cb30220fa70f9a414d66fbd713ef265e9ea03235127240753691a9. 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/ES8742302014.
Keep It Together - Ludwig A.F. Under Pressure Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e443309c479080df6921b45ca7db48f6d1e8e4dfafdfcee5cf4b8ae7a97f2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBPVV2003735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e443309c479080df6921b45ca7db48f6d1e8e4dfafdfcee5cf4b8ae7a97f2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBPVV2003735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef2a88907ffd9bca222b5ce7d2c3058613488d603cd314268370fa43c8c8809. 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/NLL562008973.
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
Faerie Stomp - Ludwig A.F.'s Haunted Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c4a5eb6282c1f307e344d07dc183205146b88aae7313a252c28a37639ec8d. 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/USLZJ2031826.