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 0xb327996f507bd9fa0d196110eb3605d0b3d39bc530bafcf7c1ea6eac5593bc9d. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7280ffec-3185-4cda-9535-eaa8d9b7dbe2.json and https://artists.proofprofile.net/proofs/artist/7280ffec-3185-4cda-9535-eaa8d9b7dbe2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7ddea2b76024f599cd76473b3761d35ed9c9b591662bc6dffc6c4802259708. 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/ITPA61808121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fec3f58697783a99dbcd4f32cd04ce41069f1bf759542e2b634eaa6c293d416. 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/ITPA61808126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a224af3f475d3bfef82e57b7efb8d33d0d95c78fbe8335d2369e59b64185831. 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/ITPA61808127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3338b899ed5dfa2b4cb70542bc2770766b70895407cc28d01d2941842a1d8af. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITPA61808122.
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 0x3c7315284aff84f481aceeffd537d7faee7ed8ef02aef1943ce667c1c9b0996c. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ITPA61808123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60df5852374fc001aadbcfc5bc5dca0a09f3660505a88653f5dabbf92cdec150. 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/ITPA61808124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eface78966c83aff7cc5243c03addc384a7a519b1c4c2886cbd9ab3aff7cf1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITPA61808125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5698a3fb401950b618c33e7289fab672c2051139c010c28377662d7413e5e91. 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/ITPA61808128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965c4028f63abb5999302ca19228cfb36fbc3dc38d32db55fef2ced96149e8eb. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/ITPA61808129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19acf7760da3fec2646b1ce62aef96af996219a376779ff59354c5e31a69378. 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/ITHU51800323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd210b7f17e04801097239628ff5c9cc14983cc78524e18bd98054364f8dce75c. 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/ITHU51800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39841ae10cd5e285a9706d3ff528b68e986f4273516c9eae0ba0f394b2f6c42. 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/ITHU51800326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ec98a7d3a46c233b520a776488cfcc342594437319913844f207f85a0dc9e. 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/ITHU51800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5702cdbe0513366bddcdfc91644ae209765acde6a6eb8151f16dd6323ebe7756. 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/ITHU51800328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f3f91ffe36cfc8cd60b0ccd1f7aebf3ced1af80be9dfbbbd8998f41f3a8c1. 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/ITHU51800329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c5f04f8a0a0dfae450bdcd415d02f488b0f28e5b14cf701372bd0427369bf3. 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/ITPA61508121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e5cf9ae797396af65829b4e58aa8f245939285380ccb404628ae6a5340131c. 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/ITPA61408123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf15e29ebaccf28621680c189dfd25414df008080f8b3630379deb9c7793aef. 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/ITPA61508131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89aaafa582371e3cfc78bd9842537ed066dc7a7a47f0dd3dbda13e89108e3c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ITPA61508122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fcf6fa9a4a193b74c987f77577e7e46bc3484ce2b6e1e5a1c628e90a128249. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ITPA61508124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720b18dc9458ae0e111816f45aa85a9947afcf7f54e94471c6f5c5ae03de3f2e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITPA61508125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c76dd0de32b4be8bd3404e9d750021c32f0633a66341eef8bd872c9d80c5d83. 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/ITPA61508126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c0c74d0c9d4d3977039bd4fa4963bc5adcf17246ef6ffd78251adb52d9c929. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/ITPA61508127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73eaf97b7579da9bce6fa2274e13daa09a4bc53c9e5f348073735f8e70d153b. 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/ITPA61208126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad374eb90d8ca1f7c52c401de37a448ede3fd744eecd9364c91e8a9e454bafc5. 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/ITPA61208128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d581ff40f790655d21b89de270860273e71598827a6a0cd7fe4eeebc6aa4bd2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITPA61208122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c2599f7c947814c7a8e00ea0ab1b2b099b87697f0b0007aa447f7365b20213. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITPA61208123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ef12a14206974b3c8e795dc527d86178dfbabb265b50ad7dd23eb46ddcf79a. 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/TCAHY2406905.
30 Di Affinità 30 Di Divergenze: Torino Paranoica