Indiana ( ) is a state in the Midwestern region of the United States. It borders Lake Michigan to the northwest, Michigan to the north and northeast, Ohio to the east, the Ohio River and Kentucky to t
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 0x02b8adad2dae4d10630282adbb3e03bb5cd98029f4ef098666586b0157154f12. 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/090bf234-af14-4e5b-998d-bf1a68e7a24b.json and https://artists.proofprofile.net/proofs/artist/090bf234-af14-4e5b-998d-bf1a68e7a24b.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 0x497099b669d323883a514cf0bf2469af89fe6c7102cbc9bf337f31f65dda696d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBARL1300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8ed4691361f54488f42940022787960835c6b81e05c174f4e1ce6edebe7f15. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GBARL1301097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1659770d7b54ce27bc557129046bfd1eaccdb6dd1ba6fda5d8459a3c76b73. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GBARL1400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1659770d7b54ce27bc557129046bfd1eaccdb6dd1ba6fda5d8459a3c76b73. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBARL1400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22954806bdfdf4deaa1306f0cbaf618899d0b2f41a321ecaaaa033e441151694. 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/GBARL1400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c1b67876c1378f27da7895407b3c37e8e37e2d44590882dede2a38eba6ff9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBARL1400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcd0faf577083673bfafb0a386af4a2a287fa292dd102d2b651075a4936c953. 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/GBARL1301065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc29112263984bc54f1fdb1c99492058cb859baaae574148ee1d659daad92143. 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/GBARL1400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff4dee7171e1eb6eba488944aa30eac34674b8a32318d8107efa792a436ec03. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBARL1400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ee73b6c8ed21b1aba64ae135388920063d0b75d0728b585a4b3bbc253f8cf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBARL1500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf970dee568a3bf19371e2e58188bfc0c78aafdcb4fb208cea21389a9d8c2f24d. 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/GBARL1500753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc181e1f64309021541bc310309a1b58c9c2701e4f676c23efbb3a2301663998d. 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/GBFFM1822102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0156b88a50d7ea39e282808dbcbf64587e1879404796d428894e6ff4a855973. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBFFM1822103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ed90a93adab3ee876cdf7e75076ed9944989067a69d82f26e2452c827e38d5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBFFM1822104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff207f985b0bd0854114690dd4ebe73ef14749e2d844e4a36b685a5b8b7f86d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GBFFM1822108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bfc414011958a767a23a8746ecd4ac0752663041096ce7dddba7a5d7eef660. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBFFM1822110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ffe7e24533da560d79e1b4c95b0b73cb56ff5cca6274d711ee153b657ff845. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBFFM1822113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ffa54bd38fd64f4dc726872f3402d08862d162aee1ec9db37eff06fad91380. 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/GBPWR1620032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1efb84138f9a26fbb2a2948ee5cd80c9a38457988c8581abb19ed675c2c2d47. 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/GBJAJ1500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c812e0bbaf835c960778c0a9e4da14c1043c3fdeec2e35ad58526a0a07586. 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/USA2P2524586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d60eec619f64ad022b1416854bc4df43ec601a95374c69ceb5542f21afc6fb. 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/DES232200140.