thumb|right|260px|Mugison in Aarhus, Denmark 2015 Örn Elías Guðmundsson, known professionally as Mugison, is an Icelandic musician. Early life Growing up in Africa, Guðmundsson had a pet monkey a
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 0x814092730c57ab9bd62ea7630be2f74ca65bee17c68ce71896d70886ab749d58. 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/95e60db2-e034-4cbd-84b3-2184f921668d.json and https://artists.proofprofile.net/proofs/artist/95e60db2-e034-4cbd-84b3-2184f921668d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Niceland (Original Motion Picture Soundtrack)
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 0xada6e4494904fc1088f6a66974638f9958a69929dd4a6a1580fe64d64aceb9a0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ISV510700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542d4121e60153e0cee289ada55329198d76af0992b12856da1607c49102f1a2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ISV510900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f5aad9fcd9c43f8f00053709e30e852b38c93567638524e4ebe124ec2c4847. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ISV511100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3064d5416d6210b30b98a9c7adfece955c40ded94ce45928f879f96f606e3d67. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ISV511100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf0febe8c50808959107fe3b245d8dc9ebadb2c1e11ea34de4a465780b039c. 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/ISV511100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609fac9a14fd349678be269f6c4c7e78a7dd4b865de94e8003993f74724ef6e3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ISV511600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41814527bef11522fa091c7be454d28b534e37a938f26173a52cfa0c8301c09. 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/ISV511600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2047433a3d1a7e293746992d269e2b6ad9fa3009b696b3d1539704bd17d81b0. 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/TCAGU2363349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82570db05e8fe9759160fe3870644b0816fa93e43c189e1068ce372f176c1e27. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHE2332206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f29d6646f96e47bc8246f09b3e4b6d017a4f34df07bbccce01384dc1c6c638. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QT3F32561625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd68e3719fc2af376b88e80eab677dcb58c30b57ab30f04b36c8b74739f40d5. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F32561606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebe0770692c8691a142857b732af0c1684a0b9e925a6b1e4794a2a32f623f69. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBDJX0000138.
Kitchen Motors Family Album: Fjölskyldualbúm Tilraunaeldhússins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc998f5c686ef55292b2d9e60055a7644b80d97f1892bc78085b3bf25feeb155. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ISU110600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c0e7392a620424db1b66ddbf8359d3f387c2b74c187b675d703ef9f6f5b5ab. 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/ISV441628201.