The Think City (stylized as the TH!NK City) is an electric city car that was produced by Norwegian carmaker Think Global, and production partner Valmet Automotive from 2008 to 2012. It is a small two-
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 0x9244f9abb4dc14789fa076b05296a4bece2d9b46279d1eb0ea2840578142a816. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a5ba1c-faad-4721-a3e2-cff151971f4a.json and https://artists.proofprofile.net/proofs/artist/c5a5ba1c-faad-4721-a3e2-cff151971f4a.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 0x6ddf8f78444b36647f9689a5dafd6030fa3d8fedd3ab4c81bcabd49caa0ada10. 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/GBWUL2080525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8897b1be6f7ed46fd0f04971a10c789185da93f8933db5673da8ac6efc8a7428. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBWUL2080526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a341b881f46b16b7482a6e8042ce8cad56415fb57247968b607edba6ee0ab4. 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/GBWUL2080556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999c15f29d08810246b6d754599928f6caec1d49ff63747bfe6d16a152a2b8c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBWUL2080590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e60476fe6a3078a2883666352371629f69a13e7b830dc21988d30a16928d20. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:31:56Z), 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/DESH42100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd51ccd4eb063c4a37a05d34ce924ac501f546193a249f5619598a8cc121a0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DESH42000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235bc8b9f4d4357bb4136d76b71af74db25d167ebfaec1d23c33a20daa7c7320. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE4MF2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7bd949703f8f111e958d308cc3cc27e69632256c223074113fe23275d777e2. 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/US83Z2304056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386524fd9db8e11701a1f31f766d5f25a0eaa1a0ee0ed2b26e41d2d895ed7297. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2213622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c42fb52ace8b3251231597cccbb06d9db07574b4833651b5c19722e940627. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE4MF2200375.
Rassvet (Michael Ritter & Felix E Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf09d21f83ad2cf15cf8ec98bdeda6c798ddaaf79b602a9443e6f9728afab58b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DESH42100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15df8f4cbcc27548149faea3d55cac0e86c359a2df6cc66a198d95821e407f8. 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/US83Z2132012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43ac9543b528d3be4b999090b0ceb72470fc9a403dd514bb48ef4b65a61ebbe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE4MF2100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde748e8dc6e1350426677e2b4dae938d8a80739f87a829a966a0c83d9e04b561. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE4MF2100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde748e8dc6e1350426677e2b4dae938d8a80739f87a829a966a0c83d9e04b561. 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/SE4MF2100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fce44f959d24948f1c1227a2f9c9837b0ee00d198a5e8fbc82902e93c3b8e1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2042927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7fab75a08dbaa2035fc2707732e94ae8308f0cf0f5e2040132ea082c21e18e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2042929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03d063a61b38eed2113c2ee168c80a58ea02205a5952b1fb073727f0a85dc20. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEH741917682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a9dadd549c10b2a3dd30fd1805847a3ebaa38646b2450503143a55b712e7a3. 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/SE4MF2300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf521f42d3b2b067103190f42bb0cc70234ef73448d3678db7317788a87297bb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE4MF2300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235bc8b9f4d4357bb4136d76b71af74db25d167ebfaec1d23c33a20daa7c7320. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE4MF2300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a59ad48203fcb076af85550cc22a48774dc1be418931c71ed5efc446aafd08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2300568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7fb5eefba4bd219dcaf9af6dd8663381b4a7c277476c75181e4c24152b9b21. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE4MF2300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a5a0e4402dd43de5fc7df82cbf2bc571f1ba5bacb66f67e084b285ec70433c. 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/SE4MF2300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268330c8f0a0090efe896456bc55d5c59a4e6eadbefebcae4867ef7233480822. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a55c19e21612cc83cd32cb75d56223da2ffc70296d3de7e0d4b070a57af5ffa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE4MF2300592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6df8f2d37e05cfd54bc41f19eb2c6a92bc1dd62f749c4cf085d6cd5a182438. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE4MF2300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb3501881cbec316225317bafe5fb607b6e550e656f5f69d31fbeb459a5e428. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2492199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd42087b3da3a96d76439ce3006e066e8ff48fb996c3cbe9addc9b3efabb2f1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2049829.