Sigurður Sigurjónsson, commonly referred to as Siggi Sigurjóns, is an Icelandic actor, comedian and screenwriter, best known as a member of the comedy group Spaugstofan. He has starred in a number o
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 0x2fdb6ab64643f52ccc635dc7a3711a41414c3b3f32d7b3a07dbf18e6cac6b10b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13b0bb08-c49e-44ce-9853-bf54da5da7b5.json and https://artists.proofprofile.net/proofs/artist/13b0bb08-c49e-44ce-9853-bf54da5da7b5.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 0xdd950ecc744e141ba7590a12d8f559dbc4ed828fa48e12339e2a30475249b85f. 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/ISA111003205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb539bc779ccc27564886ed6deb740d092a404aff52e01a7cb80902497242d0. 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/ISA111003206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf30045beaace3872e946b1571f2556833d795f4122e5ac12b876c17f2db77. 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/ISA111003210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868270f28090567f98824f160235aeb44befd2e6622d9eed680ee9a9e0651d6. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/ISA111003302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6006e88d0c7d45f1cdef69d1f0fb7d8ec71cd08237975a99f35409cdf31f64. 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/ISA111003303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76aa632aa6bc52f74381de135a488d79645b59822470e5cbc2a73854ef5038. 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/ISA111003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142aa39d4fd8d8cdda7b70e57e052bdc705d3cd2ad0309f2adff9c505bf9777e. 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/ISA111003306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93acd6fa7c3b9c5b9e4b2229b82e1b77c3dd709c2abbe7425d06900051fd79. 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/ISA111003307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ded696b034f28f1b26bef1d74e8955d87fea8e240881ef12ae22a92bf36c5. 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/ISA111003308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe794405bd9c125c602b401e42d0314217d5be038827f3ce3956340adde140d. 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/ISA111003309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb98402c97da4341125c362b9fef463fcc0c59f3f36b9ad636cb5c54f47b76. 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/ISA111003320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc61a704004e42ff4d176d9e7779fa887834bdd9b9d2c540d64f62e6436522ba. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ISA111003201.
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 0x18312f7aa88714dde2613701feeba84a5d0f0ecc2548d16b9d517597d6e75af1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ISA111003202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd395264cc046a126f43abe45d8ff8e2ebd52eba09ee1140512d909cd992d4853. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ISA111003203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a62683fb3f91991602cd81061e4e4546cd7466b012d75fb8ad3a9edcd2ed3a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ISA111003204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba704e8281b6eab537d835c59204483faaeb5ff58b9570a504f4b4a94d65af0f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ISA111003207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126caa320ec262b7c939023852e5655b6e805764c59b69e7f43ea2829dfb4cdc. 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/ISA111003208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7133d5915041e64d80ac73070def0577e9e8a9932264484cca76bf7a966a98. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ISA111003209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b26272e75c603ae8fa4adfc824a0dc33d4ba6f13a01bcbb9faa597465cb97f7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ISA111003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef7384606f7ba0a3297dfd76847b3dd310de2da292359d00a974c5a1d9c64c. 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/ISA111003305.