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 0x08e1bb40e6c31b4165733e9112e00aff156c070d4382137fc2aedf6ad3c3db93. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e13def9-405f-4206-a616-1aba93d687c2.json and https://artists.proofprofile.net/proofs/artist/5e13def9-405f-4206-a616-1aba93d687c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Radarparet, polka av Andreas Kollvangsnes
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 0x95089d82f43a31844f5269dca7dd4bad4dc185f8e4833f967b64129a7a5b4758. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOHVY2512015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b42dd529d27ba95189c9cc508f568801888f2d71e887e4d0ea5a886083de272. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NOHVY2512011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff3d893121e6c2ffe1ab315d4109f84e4c6cca4bdec5a0956a47acac6f0a53e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOHVY2512001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ef661fce1b6992f787a04a85705b05d6f132a9f6291f96ce6754e77108c605. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOHVY2512002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb852b4a98031ae8c52e8fc6d1a82c3e63227ace4246fe1cbbc2b16b0fc849e27. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/NOHVY2512003.
Absolutt sjøgl av Magne Kleiveland og Jon Jelmert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75380f7d02878444ac09da7681311e65eaa7c19f7c27a3d6c4e5b03c39aaa00. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NOHVY2512004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135567faddb820ee8347520540e5e294e247338b1307fbfa130d4ec7f1c437c3. 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/NOHVY2512005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ca644271a5ad05f18257583b65dd761ac3638d11036b5613792d38bce53843. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NOHVY2512006.
Hostekula, polka av Jørn Kjetil Solbakken og Steinar Odde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040eb3847195455c2053a390e5f52b4c5a9b8c66d90635f7262b364bc914b7e0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NOHVY2512007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b0e4f58c4b3b09ab8708ca4417a4fa239622ef4f65d4bd3e07c50dd5985301. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/NOHVY2512008.
Trekløveret, reinlender av Andreas Kollvangsnes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2042894cb1def568aef0bdc5cd2de1c253d504036ea845328fce2e70aa1faaf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NOHVY2512009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb227406980c1747a19ea1877d69f0ef920bd6fdf714c5bf5f300414bb853c67. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NOHVY2512010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b42dd529d27ba95189c9cc508f568801888f2d71e887e4d0ea5a886083de272. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOHVY2512011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731aa0811890cf266b47f5cf45b0bc79fe7bfb261d804b0b8fe50a827368d787. 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/NOHVY2512012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585151f8f6b8e61976ca3f528b84582bd70f337f5a3adb33423df651736ff47d. 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/NOHVY2512013.
Kokk-Sofia, pols etter Ane Sofie Engesvold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa290219daa81037c346beb2ccb702d49ab3fbc4e923821a0188386b01b97bb5f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NOHVY2512014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95089d82f43a31844f5269dca7dd4bad4dc185f8e4833f967b64129a7a5b4758. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NOHVY2512015.