Pitt most commonly refers to: The University of Pittsburgh, commonly known as Pitt, a university located in Pittsburgh, Pennsylvania, United States Pitt Panthers, the athletic teams of the University
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 0xd78bb84303d8ac61da5770cbf514dbe926c93f13261f41eb7b83ac26668c8b7d. 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/a9e43ed3-3e2d-456a-9925-69b9f05200a9.json and https://artists.proofprofile.net/proofs/artist/a9e43ed3-3e2d-456a-9925-69b9f05200a9.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 0xf1e7f08f099f7cead8bc2d66100a656e16ea8ca91aeb29e96ae14094aba92bda. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ72052463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1832cc0d32dfb42e5eb2a7355b9e13b032f46cfa2c7900e0232e1b0a3581f1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRR642000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1832cc0d32dfb42e5eb2a7355b9e13b032f46cfa2c7900e0232e1b0a3581f1. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FRR642000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf654193f4d436126cecab568544bf553f1d0e5ca9572e84c2555258bc81539. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZPLR2018885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425c106f124afdd064a2d039fba4e7edb64cc194b7e8cb39f4e35667d8ef0142. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHN42142197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3c9d524a6af2eb54c381c056d066fa47797f93e593922511f4cc5ec60a4790. 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/QZK6P2100977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4de49b572a72834e60adfe5a90c6f44c06850e6cf73fd94980b093f670bd3f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMER2136305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ffc165a9e86a98b9d89ee39a175896df30c626ffe95d048ccd414dff67a2c6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZK6K2281630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9151456eed60b5cf5d5a592f017b53bb44617ffda0d9cefaff801aa848c4a24d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR9W12333677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caf8745c7de2981e230686bb3c63879a3085baaff5d7098139eef1a9da8b8cc. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR9W12343359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fe900e4150630972f6fa1349855e6b8ed6261a76006765da5a31ff84333468. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12355042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6296773cc820bfc3412688293d32c7a7582de9222d4aa55a3eb7f688aa7ba1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR9W12355043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b99ccb44fcc7150b1117180891e53c6c9cb2b32c3136be211e88fd47d83677. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/FR9W12405009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e7aa281d8f6f5772bb09f57c6db125f33318d1b926bb1018b86d9b154f6360. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9W12409426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b053849c810cf35697545e0f357731eaf22d35ba0d446d81f94c6ea5de64448. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/FR9W12414732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727278555584f016b52c7f85930e2470128d2bd230b0443c3cfc6bb5daa8dc68. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FR9W12420819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d76046583c64c2d088518982093e559ec62a85ce102dfbb52825d9740fdd1f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12423483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632341b0ee4acdd98c16eb0227ab407fb22ee7603cbaed7c96d3c5ca4554be27. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR9W12430212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd395871a3be309da2b3ded18b71b00f764b8fabb3ab770199f7f77b4f3a7e731. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12443545.