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 0x8c8f222f67f787ea3f04ffc5cb24f5c635a667b368d4b063dfca6fe3145afefe. 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/cc3f908b-ed4c-4475-b8a7-833aac6e4f63.json and https://artists.proofprofile.net/proofs/artist/cc3f908b-ed4c-4475-b8a7-833aac6e4f63.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 0x0e16a595d999e070f78a3d4edde61912e313c0780171b55d6412d233e842f9b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEC169100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639bbb00e68a79e4278f3d07f7619695fa3a98b678529ba2b6870334c3c57c56. 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/DEC169100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88ba90d1e3de357992988f6e6f59bfbed85e70c9bfb94a5b9e8a0f70cdcf8de. 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/DEC169100005.
Marimba Mondo 2-- Seascape of the Whales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a76749042644f5552c338dc7e4e4d52344d55f51f1b09b9ac24fc2aca31789. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEC169100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff5484e1f9188647595db5aeec1b945242bf050762fa69b10046274383882d. 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/DEC169100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0cbf7f34cf9a34bb36ee3c9ebca5b9561065fd3865e4a71e3f48d7a3f8a80. 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/DEC169100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4502c2671893cd595eccb4f01a0b85a6eae2e5a222f05a756735f68b2a7293d6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:06:03Z), 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/DEC169100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b4f8ee032a6294a61dd7c4d29c065ab61a1f38104369c206835a25c0885c10. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US2392000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40272beaa6520600f64cc73bbd79280030fd51edc8c80477d3f37cb573e747b1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US2392000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63198d89f02a9284096e8a102d1de0cda775491612dc5c30ba5f812b00983193. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US2392000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedec47af194e59babbda744479a13b5a1ea40a010c35b57b0fcb2b6bab2bff6. 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/US2392000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdd89909efb944da718accf4a9c6e0e9e00a4c0d6a405e2f91d16bf816ad36. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US2392000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248b5ab42753301b5ebdcf589266846c90e7f28ba732a3f7caf25781c83b674b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:37Z), 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/US2392000151.
Moondog: Instrumental Music by Louis Hardin (2024 Remastered Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb38f0faa6a34ba644ff8983ca5bca92372345e6187025b246837aece0f853d. 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/USNO19745708.
Big Cat - 1/4, Sextet, Recorder – Moondog
Street Scene, 6th Avenue, New York City, 1956....
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3db7b6aeffc09ea589a01f0143828bf4d24d887e8fbea4add2f18ae6fdf1e1. 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/QM4TX1767398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98952925956a97f9ddf5a049feb2bccd811e78980581f1c6803977acbc04a46e. 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/QM4TX1767394.
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
Lullaby - 3/4,Sextet, Vocals: Suzuko to Six Week Old June.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d7d51d1368522e6c0032cf8816f0828a0763fe5bfc6ccb57e0f027164d648. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QM4TX1767395.
Frog Bog - 5/4, Quintet, With the Weiner-Sabinsky Duo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e627419411e2978685df232c146c498ae5badc59a8fbd926f9342529c2432b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QM4TX1767399.
To a Sea Horse - 5/4, Piano (Solo) – Moondog
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570384c1e09844a4b93f4bd234723751e405f42dceee9a84bef07bff3426c32c. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QM4TX1767400.
Dance Rehearsal - 5/8. Naila Stages a Routine for Her Pupil, Violetta, Moondog Accompanies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c38dc720b8697ebcb628ac52bb02c4e7fee63bda8c5d73b58bf756afab0f3e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TX1767401.
Surf Session: Part 1, Part 2, Part 3. - 2/4, Quartet, With Weiner-Sabinsky Duo, In a Performance of Euphony No.11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeefe00cd82d904f9f63c6213aaab40697c04416e305bdfeeac16ba40422709d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM4TX1767402.