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 0xf9df23a6c7da63258f32df1b55b7875d6a163d86d25b7a515b461ce4b36696d1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2041325-abdc-48b4-a6d2-4e34f7e01d75.json and https://artists.proofprofile.net/proofs/artist/f2041325-abdc-48b4-a6d2-4e34f7e01d75.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 0x98e68f516af9b125c794b71731d71fdddebacb824b6968f43c2b7be254d08612. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IT8U11802301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e16f33954f213941608cc218fd29b43f9c1e089455491008b2ab5fa9ffec0ed. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/IT8U11802306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4859fd8878832107705783a2be4a0f6591613e3d13d9336adc809e89c83e7af6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT8U11802304.
Fino A Quando Il Cielo Esiste (feat. Fulminacci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a43acd9dd188dec43c9c0dfa8efe2396825ecc94c72e117d413a4a872441b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT8U12000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0695205cd4d434315092608ae6a86257a25ae15860d3159734bb0a5d2212c3d1. 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/IT8U12000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d2b70fd522af4c863ef4affa0065c89c9cb5310f31fc39953c5a0185c5d296. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IT8U12000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabba4e0f3084692d54e4363d3df5bb542001f2d25d1424937f4a597e5216c9f. 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/IT8U12000009.
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 0xe522d3b45e4099f5d6d75c0ac37a4a19c93bb0f29db0b9e68fe8d37e7c296e25. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITGRC2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b1def624b16774ebb5df0ed381d61640e7d2fbbef90b27c18552fb25f8292f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/IT8U12300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741a0dd668270f024513371c8ea0672acf1d422c1c319c7dfaf1d322f1ae051. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IT8U12300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e67358e1e6d0de41f7584f27655c4f75c7f4ae3ecda6b4d36e33902e6b2396. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/IT8U12400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5aa36fa2ab6772a41328cc1038b41b71d54e6f42166063e5725a2042fc59aff. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:10Z), 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/IT8U12500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538313aea7e06e894ad864cb5d995dbff84a13091803de477b4fb446e17c23f2. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/IT8U12500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8756966c5f878ae58b53d4c2e7a2aef96e2c1660e61d8f2432f9e2ba308ebc79. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:02:26Z), 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/IT8U12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e9d10152e3638c68593394ca158c53ccdf2d1e3f61e1130ae819382701b15. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IT8U12500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd597165c6e52f0ded88d851cc6b3904e6656574e87efac1e5bb811274f41fa1e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/IT8U12500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58cbaa3bd5c5379d2b15b2acb35c36f3ba1bb4f3c36bd5af1ca30c2f8923cb9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IT8U12500015.