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 0xe8e18213589ab0850fef3896fc516e9e6bf58c2b7732db28721dda834d3c90e7. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22dc7717-c04d-4f7a-b4f5-2c3b26ada21d.json and https://artists.proofprofile.net/proofs/artist/22dc7717-c04d-4f7a-b4f5-2c3b26ada21d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ten Holt: Incantatie IV for Three Pianos
Incantatie IV, Pt. I: Tableau IV, section 69-73
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 0x4e5255b1c3362c756c808eb727188a45a1c1c7478507ac4895d1abf8c4ef12bb. 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/NLY331401192.
Incantatie IV Pt. II: Tableau VI, Section 197-203
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9213e14203f9051656069b2055980a91bf43c7efc09f52a9a123ade42f173. 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/NLY331401196.
Incantatie IV, Pt. I: Tableau I, Section 1-26
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9cd97af0e5fd71f9013303b8527f6c2ff3a8e59dc2e03ba5689ff3bf62b6ed. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLY331401189.
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
Incantatie IV, Pt. I: Tableau II, Section 27-44
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2d32170c01dfd244e6a6c3a5eba9bd2cb0f741a597529e557c95f7008688b2. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/NLY331401190.
Incantatie IV, Pt. I: Tableau III, Section 45-68
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0297d816b5ac82def3384a46623e20ae9ab7dcf573f51411ca2fb501479d188. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLY331401191.
Incantatie IV, Part II: Tableau IV, Section 73-139
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1492c49a892412b0cec9b9cf262b583530d10e2d1cd6927c8edd9be90749779f. 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/NLY331401193.
Incantatie IV, Pt. II: Tableau IV, Section 140-147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8919a159247e632be0e6024f31903975e69f1a3e605ea68b78a43bbc3d84a51. 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/NLY331401194.
Incantatie IV, Pt. II: Tableau V, Section 147-196
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c1b183964a6180ffc86b547179078d82b048213bfc89467778ae05ea209e08. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY331401195.
Rachmaninov - Scriabin - Debussy - Ravel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4f6492c1391ce93866b1f09a80045f849a5f7b18d3d54ccc9947db9ad0887. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NLK550200010.