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 0xdf7068741ad6ed6933ae24d3a9f82d059481c6f17bc76d5cabdd88bb136fa75e. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ff411be-5f4e-4b73-be0e-e3d8381c30b6.json and https://artists.proofprofile.net/proofs/artist/8ff411be-5f4e-4b73-be0e-e3d8381c30b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite No. 1 in C Major: I. Passameze and gaillarde
Praetorius: Terpsichore - Suites Nos. 1-4
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 0xd0d9784aafd587d4ec0ddbdc937b9b860e1343cf6c5eff67e16244ab2bb07c83. 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/USA220810970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec05f0c207706862dd79cb462fa98a5450008b068db4ad87906f6d4d62763aed. 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/USA220810971.
Suite No. 1 in C Major: III. Ballet des coqs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1847fbc1113fe02d0d7f62b54c273b1d6ec9d16c549a207ddee1c1285f7c3608. 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/USA220810972.
Suite No. 1 in C Major: V. Ballet des feus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1117740fe0e14203b7d65a4f1b8720681b535d7c0eb49ed093228c8e238d7645. 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/USA220810974.
Suite No. 2 in G Major: I. Bransle double
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259d9dd4ac50922c53733eeda427eb9a457c8017b75c5f615abac178142cbc29. 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/USA220810977.
Suite No. 2 in G Major: III. Bransle de montirande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492e500136fecd016b5803202d8bab9c3e521d811a9a541c4b9463440dcfc29b. 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/USA220810979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7157b54fdbf7cbcc62a961e98f34e397276e46387f248a689ab49f125a9ccf53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA220810981.
Suite No. 3 in F Major: I. Passameze pour les cornetz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152adeaa1fe1cc425b4b391f3f904105589a1d06f6a4b156f0671407fe115771. 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/USA220810984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355cc4336ca74170d73a97f588db904200dbfd40cddfdf22b2c5f09a29c0e415. 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/USA220810989.
Suite No. 1 in C Major: IV. Ballet des baccanales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c8f9c941d8b07c321a29afb548635294b6450a708aae613058fd9211c333c3. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USA220810973.
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
Suite No. 1 in C Major: VI. Courrant de la volte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e050f22d2e43380098fd8f48fd982a5123bb3c28148aee35f5d099d33da6e6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USA220810975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee541638d60cb81b1cfb3fcf58a7a07ba984b468388212c4ef5c08419ae66ade. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA220810976.
Suite No. 2 in G Major: II. Bransle simple
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced93661507d0a91346ad295c71ac4fe2f095549f9cd986b9739ff424f95894f. 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/USA220810978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0403a6fb6f663959e50dd8b482be81117d1443f9bf8e7202ef96a827c73c609e. 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/USA220810980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c7cb91f420cb4e3340a94c3a3f1255f31de7f2847571daf1d4104e512e647. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USA220810982.
Suite No. 2 in G Major: VII. Bransle gentil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf987fb0118308447c5feddc07db6a9c32c4d533ca79426cdfed0677b86eb1805. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USA220810983.
Suite No. 3 in F Major: II. Courante M.M. Wüstrow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1c0386febb077d72d252681571503f9b6e7c5bf7e90dde740c1809109f1b29. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USA220810985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a0e6a03032f77413b6d0eb464a98a63a5d09fffbf8969be161cef3fddb819. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USA220810986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca09c73ec026648776d7f69598a545e384e794ec9398ebab3d3a00680cef53dd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USA220810987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c01f10cde8c5a8f96a4b77f45a33f462465aa74a0b1b0d70cfddde1f5650a9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA220810988.