Masetti may refer to: Augusto Masetti (1888–1966), Italian anarchist Enzo Masetti (1893–1961), Italian composer Giulio Masetti (1895–1926), Italian race driver Guido Masetti (1907–1993), Italian foot
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 0x495713ec247a1afbe12ca94462e302d0d6e6573fb4abf55e3c4de33775a34f05. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dd42684-44a7-4165-b11f-464eacffe3fa.json and https://artists.proofprofile.net/proofs/artist/3dd42684-44a7-4165-b11f-464eacffe3fa.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 0x915d80197e3b8a0922dd9a3c80670cd38ce3075875eb3ee0e8bbbe66ff5c1167. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAU2220577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0265544313ac8e545ec5061ca54b962ec2bae4fcc1c08cb2fc8b053c35b1d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ72322729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd5d3fa1640b33dff652009bb392143b784b087ac55ed07f7daa94f54b74e79. 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/QZHN42351324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096de43bfef60d20816d827d0c867f2e4b074baee8fd9ffd4b9d8c882202857b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:17:22Z), 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/QZK6N2399481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63feb7ae448a90bdc6f171f55904c59943e4d1ca06f52f2d5b733d08ab561644. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZMEP2322677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a655bbda75776653d18696beb1ee1c8af8c5d662eadd837414af73a91ebca08. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZMEP2322679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137a0254cba264fb6bd48cbebe308657bd7f25ea65e127b07abe782dea9776e7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA82483786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93d92da4fceeedab294f8f9955ca66b28ea4a43a1c7a35fc0847c75864721f4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ762475376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d808896cd691afb2b27552b38d965405e03ae8d2c31397f4bb0dafb54fd569. 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/HKG732494504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329b30aae069726a866a5e9a3e0324563976eefb2cf990385422c80f3d3af32f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZMEP2545875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b84733a2d5261ebb893ad37528c554d14203d42836a780bc9c80d22214d3a0. 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/QZMEP2545876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ccc20f5101a2747302fc89e0d722fbbee9ce422fc99ad7d7506eb09545a0f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMEP2545877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b4281c405cefdaacc4d0cdb09866bd158d698e88fc808faeb340b6ff47af65. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMEP2545880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef953bf8192e03ca4fde0510f5c3ce8eec672394510ac400a1d2288cc22ad5. 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/UST8K1655306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62bb85d8958c69327ba6ae38a97266826cb5a3c541c06e12436d7b7bc9d91cc. 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/QZDA62112034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20311e6396c77e90269aba245a4c6f70a38298d0a2263ed1c5f6df45a54b0dc7. 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/QZDA62112035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b401335d726b86dd8f36b93bcb031c10bf2f6051a49c55a7cdc925f94c46d0. 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/QZHNC1959259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e85c0933c9f748210f720dc59346eaba0a7e8186fa3ad8e1303e74736704a. 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/QZES82057803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdbaa929b71a9cd9b8d46b44300e5015a86f504c40c5bc9f9725a843e116a24. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/UST8K1655307.
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 0x71a0e4f89d52b7e589d60dbf8ae69d3518159484ceff8b4fb5d15c5509225ffb. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZTAT2234602.