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 0xcbcd15a27f5f679cbdc2ba9c76acf017993238eb3bca5d94ccd17f4f46be06d6. 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/3b19f7a7-b47e-4a03-bdff-d41e966b0e8d.json and https://artists.proofprofile.net/proofs/artist/3b19f7a7-b47e-4a03-bdff-d41e966b0e8d.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 0x3e5d5ae6e8989306063ce0621f77406fad891a398d543c2cb86492751d9f821a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FIOVR1800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae02bbd6baeee68f63153f0e049f91645858932417878737a4511cb1872970. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FIOVR2000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9521faa383ecec2458360bafd04234ab8193a1c4b1356786e8cb2a2d996a915. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIOVR2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45548d4b5b853102f664ebf1f1e37a490d3e7fdbfc55e9fc55b3cdc1a684d650. 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/FIPEB2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3baf82f1256e270154286f5bdf436bd98b11eecb30cd898ffb5083fee1b62d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FIPEB2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae13b94d9ebed5f7fd95fd21e804cde2854d409769821e411713151722d54c8. 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/FIPEB2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ae15eab2b2f8c74366f08c37f05f22752a272771aa68902e5b98ce54a4c8a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FIPEB2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bade3e6ceece6f9355d441f1316fb62216acfa64d0f60eaeba156bdfc7917c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FIPEB2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01f55cbe7c0d8d54be82db40e0221575e6fc5aacb2c792984f6e66d34f7e879. 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/FIPEB2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552f0b1b6d7e7f8ef1feec29976e6e50c6b21d2f7065893a76a95e557feec795. 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/FIPEB2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8638eb7727376454bde20aaa6d89ec94e188ee6af547e29ff7cf5f62ed21f4. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/FIPEB2300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ac27719045701daea246213832ceec9ad66adb2c2012570708cb050660f9d3. 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/FIPEB2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c4928feb35d642d4a2a2a284849329228c5c8fb340aa924e78886d385adc3e. 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/FIPEB2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531006cfba012a5f0dc48382246a3ff973be86ab5399ed91f516a5170342776. 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/FIPEB2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc939dfbbea707e0d61be57caa700db2b8cf509c61c976b4e49264646d83bcde3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FIPEB2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28c4f5d4e85346399662b6e294c71dadf26762ca6cbdfde0acb8e6a4dd9acdb. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FIPEB2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15abf201d03b4efdb95e7c0891e327b991bae7d7ed4defca51de600f8577ecd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIPEB2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c86f98958dba82ea31c0be9a0fd7e1d78968f0d08fa84bf8bd29a86816580. 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/FIPEB2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f764768d7ede3218b8a53f43e45d977c11142d2145aefcd2716ae7284e02d0. 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/FIPEB2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874b4c4abc9a7e45e85304c5055b1fac6747f7789e9950a31df3a1d72e7fdbdb. 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/FIPEB2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7a32daa8852ed265f3b99ab42646baadcb80ff21df35c5eb3e8ee93ea77725. 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/FI5RR1200021.
Passaa Tohon Käteen - Toinen Poski Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129a754a731e269dc9edc5645d69c6f9f89015403564a4d136095e7729092416. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FI9PF1300048.
Vielki kentil (feat. Kalle Kinos, DJ Kridlokk & Eevil Stöö) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeae437da132518e6292934d93ac9a12c05630fbffae24333f39abbcc502c79e. 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/FIKLW2400027.