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 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 0xeebe88bf04be1d1bd3deb143df425270b7abeaeec3a9a87396dda7c361837c67. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd3e618f-a3fe-4fe9-8d5e-19754f48ae87.json and https://artists.proofprofile.net/proofs/artist/bd3e618f-a3fe-4fe9-8d5e-19754f48ae87.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 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 0xbfdeb8ad71abe54dd7f67433b9dcc87fbf11d71811d4be03f5a5f9d55d1930f4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ES7892400801.
Rinaldo, HWV 7b, Act I Scene 1: Aria. Sovra balza scoscese e pungenti (Goffredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edc4455d41292502084511766c7cc1a632ed8c52502241a1ae9660795f8f6ab. 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/ES7892400803.
Rinaldo, HWV 7b, Act I Scene 1: Recitativo. Signor, già dal tuo senno (Rinaldo, Goffredo, Almirena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56871c89ec20381a1c086053e54491939f8c235970b7e96c29bc38b05fc8982b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES7892400804.
Rinaldo, HWV 7b, Act I Scene 1: Aria. Quel cor che mi donasti (Almirena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4bc323d7fd54f2c4f7f6c8ae0eba2c13599ad1b887e4583037f7d89a7f6b67. 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/ES7892400805.
Rinaldo, HWV 7b, Act I Scene 1: Aria. Ogn' indugio d'un amante (Rinaldo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f48fdf60d5c9b38fa510832a2f615496414c3e69fcc0a473f84c21dbd21ff61. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES7892400807.
Rinaldo, HWV 7b, Act I Scene 2: Recitativo. Signor, che delle stelle (Araldo, Goffredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6815d5fa8de52b5c24aa38dcf015f220ce49ea2fe2819f0d67b26a66b6164a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES7892400808.
Rinaldo, HWV 7b, Act I Scene 3: Recitativo. Goffredo, se t'arrise (Argante, Goffredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8b8c459448d7db59228fa531dfd7c6b9e9650eac8f90b92fde074f587d44e4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES7892400810.
Rinaldo, HWV 7b, Act I Scene 4: Aria. D'nstabile fortuna (Goffredo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde33e61979e6125bb870a4fa0cbaebe04b2b286db0811709007b64c7cfb50931. 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/ES7892400811.
Rinaldo, HWV 7b, Act I Scene 4: Recitativo. Infra dubbi di Marte (Argante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeae94e05d51428ceae3869c78cac701023e7ca7563d7df5524216028f871fc4. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES7892400812.
Rinaldo, HWV 7b, Act I Scene 5: Aria. Furie terribili (Armida)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160bec3981e424c2ec14957715a54497bb125205e14faf4191401257d80f0944. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES7892400813.
Rinaldo, HWV 7b, Act I Scene 5: Recitativo ed accompagnato. Come a tempo giungesti (Armida, Argante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4adfb25b55606f737dfe510c581c33b1f5c46b0900cbf41eba02094eea8c309. 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/ES7892400814.
Rinaldo, HWV 7b, Act I Scene 5: Aria. Sulla ruota di fortuna (Argante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1fba0a9b16dd5a69726ccbc85b30f73fa600b2fbba6ec9d2844738765e2f4d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7892400815.
Rinaldo, HWV 7b, Act I Scene 5: Aria. Combatti da forte (Armida)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72efd818dcf8bfcee54cdcafa412711906c07b79270c43163a32441485d5d2ed. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES7892400817.
Rinaldo, HWV 7b, Act I Scene 6: Aria. Augelletti, che cantate (Almirena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efea95d6603b23ec15665aa722a9867f95886a1e1f84f8ee14926f905990c52. 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/ES7892400818.
Rinaldo, HWV 7b, Act I Scene 6: Recitativo. Adorato mio sposo (Almirena, Rinaldo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d413ef3072ceb7c1a6c17c416cb99c301966312b5e6e39d17d030ad930da7ce. 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/ES7892400819.
Rinaldo, HWV 7b, Act I Scene 6: Duetto. Scherzano sul tuo volto (Almirena, Rinaldo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498647100c25616167635fc95cc5d56228d21d5b598cd2442abd5e25457da3ca. 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/ES7892400820.