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 0x7a25ed2f478b77abc7dbd411a2693fdfd77aced6994ff8c77ec6cb42e3a234e9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41005ed3-dd45-408a-9d1f-06436e47722e.json and https://artists.proofprofile.net/proofs/artist/41005ed3-dd45-408a-9d1f-06436e47722e.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 0x9cb0f0fa740313c77fd3d7505fc4c6eb9addd9b9d8c7afbbf0d147ebaa01f27a. 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/FIFMF8600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97465d4282c94ca46610f1f64fa01d620bf8070730f5afe66e23901dd95fbe30. 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/FIFMF1226847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d338c97ef9408a06df844034a5740732f1154cf276afbc0e65f5ce75c73163. 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/FIFHH8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc007b8d2e50e76dcc35f1dc91e03f8431a330c24baf9ac7a5f0445587ef5e57. 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/FIFSC6001600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94245d32603f07dad1908def0a2605c285d0de883524306e0d5988f36d5b2280. 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/FIFPS3600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1185bb4f2bc144a582e2fe61c6cf366e928938792b5fed2ea406f318df9f25. 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/FIWMA0800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5927ed2c21242acbf20ea18de0caa88293529fad5ffe5feea66384bcb9582a85. 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/FIFHH8400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787dca99c063d8bb82d32ae1bafd4ab073841bfc5127ce2c7d8d91112fa38dd. 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/FIFMF7700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebcaeea20a5301a41979f44f5fa50f7269a84afd299bd74a7690b0c3c45728f. 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/FIFMF7100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d9af27a6f19578d6a2a15803a49ace736b6cde8c1c54b81203c9e39f52af99. 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/FIFPS3700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c328f3c852236653c248137193c069183d3d784a24cc2fd07069f70f2f2b5b4. 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/FIFMF1220819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5472527a824ce283e18c449926bae456db41a5b238bae80c38c2502488b642cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIFPS7900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9913230f9f03c009fccbc3e5256aedcc48cdd4432f37fedcf2e8581db1600. 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/FIFPS6100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b920c449862521b286d383147b915b4bbc885880b668be635e1ae2d264282b. 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/FIFSC6200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace50fa0745f218eac59935843e8e43c5fa311c8a624d4f9dab6c438cb5d8592. 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/FIFMF8600800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc7aef916dac753bae222efc9a82bf9a0657e8d8047035518229fb66bf4f00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIFMF7300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad38036b5c01cc7a95d23c18949974457243b0821c67eace35759c389f4c449e. 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/FIFMF8300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9724dd6f998d150f115674773bc3ef6e0655763a9e58075ee906682e74def7dc. 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/FIFSC6100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96027b41a3a441a4fb395da92ec52f723f863d1c930848131b2b3a3fc75c3a0. 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/FIFMF8600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd14d07181a517b481ff2291e54fa798c64fd7815f5a2e3e5930b1e18bea38df. 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/FIWMA0700879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d83ed44b60d31bdec3d5806134875d9701fadf934a732b69410a5ff9cb38765. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FIFSC6900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db875044c852ba284c171413fb1c2fe5f79758afce6adb09d4e8489fbceb966. 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/FIFFD7800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12511e8ac5eaa40d61f5a59d191d99761c92771fba63df8a913c66a558a2d50f. 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/FIFMF7900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471d6f4d522d8a138ffab75beeb2147bcc4c46f9e1c83687fca97ce99d09eea. 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/FIFMF7100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ada790a21d32d40eb53674c8c80cbef06c2ec43d96871c9b0f1941f67519bd. 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/FIFMF7100200.
Kirjoita postikorttiin - Send Me a Postcard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf266341b86f06eec4e14a2325c3bbece122a1c163b5c8139d9a22207c40012. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FIFSC7100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed8569e18fdd79d6606c2b63e8cda50e0e2153f38da563575af73cf89efc38. 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/FIFSC7100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b394814159b7da33d241298525d25120ede963db7a0538a67bd18924c5c2672. 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/FIFMF7100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf99f1a94d29afddd174047c5006c950239366f569743247e5b22a6eac795939. 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/FIFSC7100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c00f586fdc138056cc327bd6f41605bd1ac63504d8105a400ddc9c7e8e2f0f1. 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/FIWMA0500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9857526b2716650dfbe872a5a7895edeb1148d8bb2aa137b923252c126f4f0fa. 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/FIWMA0701047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebcaeea20a5301a41979f44f5fa50f7269a84afd299bd74a7690b0c3c45728f. 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/FIFMF7100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b86d0945caaebf04097e576b33852d9bae78566098908da79c54e22484def49. 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/FIFMF1229763.
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 26
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a58aacd5dfc3c32ef3b9aac3d2ec6003d9601fc0f6727d74c5f3d1c46cd714. 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/FIFSC6300020.
Toivo Kärki - Ensilevytyksiä 100 v juhlakokoelma 25
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b50ff1732707c5fd395e563ae5909abb47d323d7838662fb53a0d82c5b3473e. 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/FIWMA0700523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020da9f194467e83ec44d2bbc53f4e93858afc12a6837b511a176b366819f5b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIFMF1240531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf7f3778a55512912fc7d3d37b2422eb098778fc102ee7fb6a4afc575a6d4a0. 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/FIFMF1224632.