Cobi or COBI may refer to: People Cobi (musician) (Jacob Michael Schmidt, born 1986), an American musician Cobi Crispin (born 1988), an Australian wheelchair basketball player Cobi Hamilton (born
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 0xc2ef2a109bd53ffb7c8f647dd904556f3f3bfe047802ca73c4ea1e1113087f52. 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/468714a8-6402-4119-b1b3-606a858c52f8.json and https://artists.proofprofile.net/proofs/artist/468714a8-6402-4119-b1b3-606a858c52f8.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 0x7487a9a2ead2fe979a2bffe3c1585f314f3c8b6e59d765661051a1317e9c382a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QMCE31801775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e827d0f3c1a4e8b68d68cdb6235185395231043fadf54741615d2e6ec777024. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMCE31802029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31728ba073e3fa31e1ebe09f58aa3fac5b5d7abfb471d5d2c85b1fc7decaee5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHNC2067604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17dfc1bd47a567d2910770d2d70dfcd4209c150ad73fd2026ff2af7b56363a. 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/QZK6G2097126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f470bc20eb71be94a3aa65674d594f169fc2b3235347d6c7ee5d5631adb613. 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/QZNWT2040198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e89001c72f23936fdee5446679edc5e068795ec8562c6177123ce73b785f77b. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZHN82160580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11418a19427631c35f23a43aeefa726ee40e6b6bb4e60bc371e228aab5b623fa. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHNB2189859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75745f2272f2df3011da44401c1acb19736142e13f744c92aea36599d6761955. 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/QZK6P2179970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce17dfc1bd47a567d2910770d2d70dfcd4209c150ad73fd2026ff2af7b56363a. 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/QZK6G2097126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11418a19427631c35f23a43aeefa726ee40e6b6bb4e60bc371e228aab5b623fa. 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/QZHNB2189859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3908d55e7ca5c6beadd7f94ed75751de49b708d0bc156b6a6d9c71748d565e48. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZES82164168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3262bd86dc72ec7f774de41b19f191b1422fc185fc0385ba30056dcbb82ea58f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZK6G2159576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f73794450a4cbe26b4df4dce571301fc056def72343db78c472cca03bd5f543. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHNC2087797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46bbe32ec303cdc9272b6ee3465b913d4105a2eed369b1a53b8b5a1b29f27f1. 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/QZ8GX1701648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa971b2b11638ee304023f0d00b98860beb9015f4c09e41bff0b682aebe87404. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ8GX1701667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f80cf5f6f2863a1b71ead520c493693ea067ca81d5b0e4644d4704e6f63d40f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZHN62244000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84099315f67095547accb6bd539e408e6cee293962be4af40aabf04ee30e7acb. 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/QZ8GX1701631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3b34e38428b7ba4d3c623c205f6698748d2c3a4b13e1a13524a716e87b962. 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/QZDA42218157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a00cb4adc5a3cc05d65e48a0577cf08d33c26228be18cae5d6f638a5c9c59b. 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/QZ8GX1701714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70da5b84a0ff802d9542f690709139808e0b8e93ac31510198d9d83b66327c3b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZDA82249677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b32372fe5b26a187e4d4933294bac51c81bd16a7164b7358264c12ae66262d. 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/QZK6Q2248330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb88b7b19c41871b2fd9b917d5314bd3163ad2152cbea611ef9c58439b3fe2f2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZFZ32280246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd844a642330e29ca0510e292cb42dd2181176ecf5831905292308f9dde8ec612. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FT1T32302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61caa2cbdd9d483e557498a60337d7e150029c23d7a0992b8b10ebd8c4999111. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FR1T32302030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e81fba8f4619b00177c3cffae22c77e09aff7e2db702527f7c5c10095630ab5. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR1T32302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80a4bc6fd8f31c60a97c7f0da98ea6923678a868acb75fd324594a6f731a85. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FR1T32302050.