{"copyright_id":"0x0c92bcb9f93f7a46cc1eaaafb500c6d9efeb6ae46d65cd5d3fc38cee9a6cbb44","name":"Sebastian Ahlgren","registered_at":"2026-06-20T09:06:11Z","symbol":"NIM1574072","token_address":"0xeffc53fe6effdc4d18d16634883473b4f94b3c57","type":"artist","uuid":"a91a0fa4-530d-452d-b4dd-a17e25da2a9a"}
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 0x0c92bcb9f93f7a46cc1eaaafb500c6d9efeb6ae46d65cd5d3fc38cee9a6cbb44. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a91a0fa4-530d-452d-b4dd-a17e25da2a9a.json and https://artists.proofprofile.net/proofs/artist/a91a0fa4-530d-452d-b4dd-a17e25da2a9a.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 0xee2537d9eea4003f9f8762a1cd08828ab9398e40f5f1794405801a8872980c42. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FIBAR1300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693ae2867fee03e4b9f728ff6a16b0935a4c4141748086aad19988e9653d46fb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FIMTA9600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16232872a3eff701c12ed7568907162835a9ce1213c8bea411cab341f869c4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIBAR1300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01edc3d1fe2ff2c92eb1f6d6ab3ab13693c633a7ee06b3502173e559e340da37. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FIBAR1200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7112a2743a26569f770b9e3eefa11a35a218fb7c689e5949635552d6e1252ce. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FIMTA9500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dc42a5e0ccd96be0685396020811d0d1b35b71e3dca4153c6a5dc862a68313. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FIMTA0900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe1126b03a01e5b8b84c3f8fbed7f57e507588e72f38c4bd614f91d57f4395. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FIMTA9400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae6a446dd90219c271a3424a2a4fe3e63105095833697fc2e368a09e2ddd67. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIMTA0900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6769df7b4bdf35721206def83caea049b5ed10f5a4c411fb4b32525a12d0e9a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FIMTA9301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ca04b5a7f6a76a719b8ba7536cfc126f6ca11d9cab20f376ad2663b97e62c9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FIMTA0700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ac746558529b09b15afeb00f909c48b0d765292f0999c86d1720af8dcc47d5. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FIMTA9200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ece5340d8e484bb29112a814294d74eecbde08bad8d86b229243868853ed5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIMTA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6079befe696e08f19e8563a8bc57512668f5d0cd8edff5a2c8c4a86688f21. 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/FIMTA9200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d3ec9591e0bdeffa0a7ae241bf8464e9c7b5d5a59a6c5f6bb970beacbf2d7. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FIMTA0500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166d9129bbde9b2b8ccdcf35daa444f9404dc017eb70ab59654fa624405c0f6f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FIBAR1400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28226ab6235c6de05ff780e8e26fee71eefddbcde6ddff1443aace220c6651. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIMTA0400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b8cbb24492cc9ceb01887095a8f9cfc4089a388158479f44eea87f212673a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FIMTA9100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4689690b318a3c07f26c8e24118895c5627d7f08e3b2930cfc9a17a01d1746. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FIMTA0400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57ec7ebea5308a3bff03c044b6bb454f84ba276221381a63d6c2bbfdd837f9c. 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/FIMTA8900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c638429b39de94a21746b2fdcc49331d5136b71ea3e0b02ef440be89a39e70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIMTA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c107cf0f6f42ef03a41eabb6180513837d0ec6243831452a57aa277c0ba4043. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FIMTA8900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0bf9761aacc5fbd1cec890ba8dc45cc9644095f5e13f7ad21a1db5113e377. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/FIMTA0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd481e295375bf0f505ec9899d3a0de605dd4f09b0a34a3849886c84445428017. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIMTA0400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca28128986bef5203c6c6e2a433d19dde4fb8f92aadf00bb90604a1c3a28bf8f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMTA9800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6630a6f91d6f521bca10317e0dca8ce8baab68efa1887fcf4b97919586322e9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FIMTA0400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b9f5da22f0eff2bae0a9637727318e5f5891317e908e4980a07f9a034a33cb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIMTA9800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a7e1cf93577237a9f1b8f7f0d4c4340a4b865cb538575dd2d3d19383e7a0d. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FIFMF9201512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c7e66764e1adecd2c424b45bbd43e8295711becaba5bd15f4793260b67600. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FIMTA9600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ef119432690578e8ca98fd8ae7a350544e9a5e42395b2c579e3bd9d46144a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIWMA0400702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeab61eb0650786ce80fb12f398c6bc25c1c12af28b38ea7ba0cd477f175e5e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIMTR9300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c7eb88c42c61e67537bdbfbb6e6b535ca276ce8a884670b46a8d7e2a3c8443. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FIMTR9300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1325b4a2b5a4189df1f1865e9d101de1fa3768c71f4af6dff0859514cca02c. 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/QZK6P2146424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce31863ed0a795f85a29e07dec36f938b65ef6ce8d60069049c9faee2bbfdc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIEMS9800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf200b6e22e0184482b2b318df9516612a060c0e2904d6cc6b43e3cf305e7fac. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FIEMS8500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42f792d64f41db67ec7ea5294ea6c6fcbc070d906e881f50b1f7a092dc33307. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIEMS8400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bff012e7dd10e3187cd953a2ef3689e374fe0aed6c0b43cd228229373bbe45. 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/FIEMS9101700.
Toivo Kärki - Uutta ja vanhaa, vanhaa ja uutta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f491d79d567274ce492e3bb80a09a106a1a03b16f9241488f186c0932698083. 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/FIXND0100018.