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 0x47947644d720b458de567bfacc183d9b27e70ca0d215e7cebfdc074eb6f88f04. 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/3352a086-dd12-4b39-b816-9626de9783ac.json and https://artists.proofprofile.net/proofs/artist/3352a086-dd12-4b39-b816-9626de9783ac.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 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 0xd963b401b4ec685d1aeb555035c1e9753e0c7c3a44a2cde979a6b682a58f9603. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITQ009701131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894d8cd87b3243be91c3c6febe4d6e8066d34f76ec79512f1ef72c6c61e580d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITQ009701141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79275853773e1bf125b0daad7daba1dcba751f6d41adfd57de19c5abb4978c8b. 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/ITQ009701151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b30bdbd73dfdb82bbccab8201b3154246c46523bcc1324e501093e64bcbdb98. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITQ009701161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0a003a533f9bf9180a76a9050c1923a3886d9dad3d8098059aa135ffc07f0d. 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/ITQ009701171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6fc7c00a769cc251a5cb0fde014acdd48f8b1d93ea1a48411df67b4a954cf0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITQ009701181.
Solo lei ha quel che voglio (feat. Danny Losito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7add4c0cee116dff261b44a90c9e711f9aada4c026e80e7c8f457ab89b2561e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ009701191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf05df07ffea7a1a061e656ae1294eddb8c7f71c9dec76e25cfb526d5fac1eba. 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/ITQ009701201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31b99225d4723b8b645d489cadb0e2421c792ad6e63bd403ff9710897d642e6. 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/ITQ009701211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7542be4e327363e3836958df26317a6d9db009075e969cffd8e1da3c16d8825b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITQ009701221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0863e51232cff4afbe0e9e5faecf8be99dcc91397bb74b9e38b49cd2ec53a5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITQ009701231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46b14356993daf6055584816237f43d0a2129320724fdfd76f7fa100640052b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITQ009701241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e673a2d80a2f4c33adb783ce4ca35b298b529ee24dba4183e4334aecf30cff2. 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/ITQ009701251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790bce2f98dd2ba9e79d19d611f06420dba32b91fab37a313cf29b1cfa684394. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITQ009701261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3ba12ab49356655e50aaad11e3458013f47e16144d6bc4597e772e40d1bba0. 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/ITQ009701271.