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 0xfbf03a295a7294d140a9c499522a94541ea58fb552fd878329c495b419e13805. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6449c995-5651-4241-ba7b-c25abcb78ccb.json and https://artists.proofprofile.net/proofs/artist/6449c995-5651-4241-ba7b-c25abcb78ccb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sotto copertura: La cattura di Zagaria (Colonna sonora originale 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1d00c33c90d7f371fd6552487d006dddd754567134c4d8ed8f4b22806af1f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX201726623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5748ac70454166555f8ad897f1c42e628c9bcf4dc4ced5d6377fbee57c0d652. 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/FRX201726630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d15b84212222b63400b8c8af4d6c606d029102ad7557bbec782e99c9f0588. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRX201726626.
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
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 0x554210dcd32c70ce1acbee80180896a4c3d70dc6145269ada5f4866e6bd438e6. 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/ITF032100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd5f0fdbee7b5188714779e0f73a3741c2c16d40fa1ff9bdeca8ef1cee7591. 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/ITF032100469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ae3f9d5fbaefcd6314b484889cd265b6031950907047abe910c15fd8b7ea3. 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/ITF032100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2f1c38d37d7878ade7d1655e9164c328c61411ba0d70a862a8c56b7913c4e5. 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/ITF032100460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa307a1683eb180418312be35cb31d251acc37e26a3d6be1838a8b3060d7029fe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITF032100470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51470eb9384238b92d328e8cb2a06e033abcf91ef8157b9b6e33709949706699. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ITF032100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d1ebd1dcac49fe3ebf68c1da8299b43087aed1eadb7bf7ab9edde74028aaff. 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/ITF032100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b0e8f8b484a1a654472e7d151aae0270bbb2d56b9502a8341b25c66056c26a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITF032100454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35ed490e3e3b76e9ada35d9a409eb52017231adaf5fe6588fe4aea36e28c161. 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/ITF032100455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675c47167674961b626ad764931aab4691b304137beb575aec557bd799a0249f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITF032100456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb547658a247e49e42f74603960d621d056c18095523fb17a8c4c1a9cd24eda59. 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/ITF032100462.