Vilhjálmur Vilhjálmsson may refer to: Vilhjálmur Þórmundur Vilhjálmsson (born 1946), Icelandic lawyer and politician Vilhjálmur Vilhjálmsson (singer) (1945–1978), Icelandic musician and singer
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 0x92e938cd3a15306422d55d44bc774ce72ee2c27cc6c8f34cc89b070991eb230e. 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/24bf5123-6175-4d53-8377-8fb5a045d553.json and https://artists.proofprofile.net/proofs/artist/24bf5123-6175-4d53-8377-8fb5a045d553.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Syngja kunnustu lög Sigfúsar Halldórssonar
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 0xe59cc7411d098cdaf770bababecdda0633e0f5fa9f271ce38db32b669c69615f. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/ISA110500910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cb02ef74d6b2d5b76aa917caa07fa07058a04c0dbd4e7127bbf1bf9d628e22. 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/ISA109900803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9cb7e9c6b463254b8870312c8bf678eb25b846b7386c5901dad61c5f2cb647. 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/ISA110100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2547a90275da1041b8faa7134f8b3821a0eef47d09481a1423dd5d142e160c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:33Z), 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/ISA110100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be38ee7c93bc225763a6bbf12884df42c0c8c62ceaf8e487a7b2e87958ea836. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ISA110100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488a02773d98a06a082ce24a07c2eb0cbe5d9d7e40bf4b05a1a663745833a593. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ISA110100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0068e00ed615880a77a0307ee2aa7e73f3fc17af5d6c39c4cc1e6528c5c412a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ISA110100129.
Brot af því besta, Vilhjálmur Vilhjálmsson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ba562f6611e911ba0b791918844339bbeaa391a36091493a645cbc7cbaed6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ISA110505809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9750c0c7808b6b7da68005285528021c8494540e3798f1c8e1cce9cc6c432e8c. 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/ISA110505806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97fdf3aa0ae6788c9b52bddf7e4150385c4e0ceccb707fc2d37c453dd7137af. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ISA110708503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9ce97d89c91ad15944d71012e27b3bf2c2464fe523bc29fd213a60879bf31. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/ISA110505808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a9078e8400d5ed81d20a206be9502c1b5baebac08ff495ec558e5ea0b27d09. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ISA110708511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5479e9a1051349858c6bb4fb659453a48a60d898a0f3bf52979312fcc590fa95. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:20Z), 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/ISA110500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1595207c16b690310754f5d0c327590b2b53189d2221a53025335f5029fc2a80. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ISA110708616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354e290fa4344988eacdfd8172b2dccd21fb843ca9cc1dfa2c917af90c5ee6bb. 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/ISA110505803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4556dcca511cf5854f410d2c2b9a246ee4dcd7760cbddee22b2a0b36dc8e56b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ISA110505805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b606205ddd6b6bc4f9876b653c8edc84b5d13db3d74cf33fb4e8ac277ebe16. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ISA110805701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868ad83d1d7e405d87e8619ee172b8532fe47b587176ffb0a6f3428cff04d143. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:12Z), 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/ISA110805703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9689aa1a64298049533cb18decf19db14b3316b09622a23fe7ec6ac4a20d1a7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ISA110805704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803a6bb9404752be9107dccd321e1aa1a0dbee040d03d0296c1c2f560602fe57. 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/ISA110805707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7a232a8481ed21c6becbe26d92a3d3666c184c78aa070b4a6391332b725c4e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:40:46Z), 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/ISA110805711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d24347a9d0376019acb45a38ef47b5e3e6dea151028e5708b253f0c5e05fb. 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/ISA110402104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce23b5efab3c35605ebd558a5574b15f8d1ae6c990b417936b6b9a31ce86c68. 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/ISA110402112.
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