1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd8cfeff2f1da8449deb440aea8f0a19f06d4a8430c5594b5f2035ac5c810686e. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9f04e37-1643-4b2d-b88c-f7407167b628.json and https://artists.proofprofile.net/proofs/artist/d9f04e37-1643-4b2d-b88c-f7407167b628.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 → block OTSBitcoinBlock must exist at that height 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 0xe30f690ee1ea236a3054b0e3bea6c8884c0368606e925281bf475284a765e5de. 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/ITZ041500026.
Turandot / Act 1: O giovinetto! Grazia, grazia!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d5d56e154088ff941baf2ee0df2c59c782245bf7d029a5ffd92ba67dc9469. 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/ITZ041500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17326d1dbc21c432f3547632e87e68aa0e8d2dff720807a5948525052b774192. 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/ITZ041500028.
Turandot / Act 1: Fermo! Che fai? T'arresta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836c1969ab2172333001cef2bf5ee9c60024ab786a717af99dbb5ab5f66ca60. 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/ITZ041500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b551f01f380f4ad2f3519b64dc07302d221b8c67f89656ca8396c8a1ba9b33d. 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/ITZ041500032.
Turandot / Act 2: Ho una casa nell'Honan
Turandot / Act 2: Introduzione (Scene 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851ea91b7e1e2e72a57387bb98d560cdbe939240d49bd4cfe9e1ba4107aa3520. 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/ITZ041500035.
Turandot / Act 2: Gravi, enormi ed impotenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8116bb10176aba58b5af70cd8928e071d429f9a9a6251da77b554231451f0ca. 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/ITZ041500036.
Turandot / Act 2: Un giuramento atroce mi costringe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbdd1c1f89fd8dedec4da67a787a38797acfc93c28ebdbc6095a8d5ef90b3b1. 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/ITZ041500037.
Turandot / Act 2: Gloria, gloria, o vincitore
Turandot / Act 2: Tre enigmi m'hai proposto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3550794e3ded3602361d48f275cec3b49249491d4f86207a91f2da5b9765c997. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITZ041500042.
Turandot / Act 3: Introduzione - Così comanda Turandot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bf008dcd867743035705009148a3ccd5cdbc0990434d539aa9ffd039acbf26. 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/ITZ041500044.
Turandot / Act 3: Tu che di gel sei cinta
Turandot / Act 3: Liù! Liù! Sorgi! Sorgi!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3430682b8cc658d17d999f298a878f98c04140230ae9cf6c41740b2339548ef. 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/ITZ041500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d913e4550e6786636caf04fc8a17124733421c3373359590b23cdfa5aaec96. 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/ITZ041500051.
Turandot / Act 3: Diecimilia anni al nostro Imperatore!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23b57bd7efbee26ff8183c9274d440348e3666239c850191de00dfd1acb2653. 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/ITZ041500052.