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 0x47bc19615f4c26e9d7e3c2c70f9901a03a6c7fb0d8a653790e367afe0aa5b8ed. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e38ebd3a-789c-44d1-908b-cce815d5cb27.json and https://artists.proofprofile.net/proofs/artist/e38ebd3a-789c-44d1-908b-cce815d5cb27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I fantastici 5 (colonna sonora della serie TV)
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 0x9616583e0f89440d781b6df7728ec6d48fd70efb7365aeec032e45c3da84a8f2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITF032400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef3c500f01149b6a15df2a57dd446aedd892b890e4aa5863c7b5ee16eeb2701. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6d29874820245be98a68abfaa5f005f7d3e02f23c3d900cc22f47b592b5655. 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/ITF032400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4f7193231478ff829681ae43d1d2f21ab96fc2464180818183befbee10d7a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITF032400073.
Buongiorno, mamma! (Colonna sonora della serie TV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9257aaa2513013e5486ebbf9a0e45fbf6c6b02f9468cffb022ae9746c3cb818f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITF032100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd5f0fdbee7b5188714779e0f73a3741c2c16d40fa1ff9bdeca8ef1cee7591. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITF032100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2f1c38d37d7878ade7d1655e9164c328c61411ba0d70a862a8c56b7913c4e5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032100460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa307a1683eb180418312be35cb31d251acc37e26a3d6be1838a8b3060d7029fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032100470.
Buongiorno, mamma! - seconda stagione (Colonna sonora originale della serie TV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b58c3450ac41d3652d2dce28f00dba2e65e680deb91de9e595c58f4d91cbe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITF032300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39236ea02e838cdf688ead48f4789981a652c3a80e799e41ed48e4011b9db039. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3321a53987b5565c4ea4f3edadd739ea577b7514f3af37e88f07e264f1fb061. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1876d06cfa295a48be51d129c24c22bd6ba76c603b9a44cb4860537ed344921. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITF032300224.
Sotto copertura (Colonna sonora originale della Fiction TV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f3cae25a1ca3e82a949ec446cdae0c31a16e3ccb5d5fbd955365e891b459fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X41565130.
Sotto copertura: La cattura di Zagaria (Colonna sonora originale della serie TV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1d00c33c90d7f371fd6552487d006dddd754567134c4d8ed8f4b22806af1f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX201726623.