Björgvin Helgi Halldórsson (alternate names: Bo Halldórsson, Björgvin Halldórsson or Bo Hall) (born 16 April 1951) is an Icelandic pop singer from Hafnarfjörður. He represented Iceland in the Eurovisi
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 0x19a995f87983e579050350db5d557ad2ae5bd2f4a0eb86d2294dee0cf712ba59. 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/20af5f71-f847-4843-b662-48a3bd2fd6a8.json and https://artists.proofprofile.net/proofs/artist/20af5f71-f847-4843-b662-48a3bd2fd6a8.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 0x31c1c4a81c076c7a49a84b5f3389bcfb34ed6124e8141bd3e332db90357d9134. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ISA220900796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ece411f66af2d4934599e91a8c8aeb99c82376544e2cc3f542934cea78bb66. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ISA220900798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0793743e7cb2d667aa6d1d51cc30d425d94790e70b44a6ffcfb6c00c1d4c64a9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ISA220900637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a947bd18abef0304d0a3561d5797f85b258b502cdf8ead8b8ad09e4907c176a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ISA110509704.
Allir fá þá eitthvað fallegt - Jólagestir 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934b3416c1d3e1c935c1b05714be711e107c17ff175e039841fd49e14fdcdc73. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/ISA220900652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23d91469d284593fca3e016d300f6efcc0acfd8be4559c29a81cd8822ceeab1. 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/ISA220900661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0467e0e599e508a2f025c1c5a23391911b92ed8035eaa205a2dfed5c31a2f108. 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/ISA109401026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f23f4055ca6eea07fc1edef38c73c741b68b02c126e54cd3e26c1f7c0acdde. 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/ISA110709104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6e9e6826facbe4eba3203a0dd58f311a0a0349f5abda991ae080dd95f5c27a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:43Z), 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/ISA109501809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62101879067c3c5a9fb99a734fc5efea7fddcbf1633aae901ce3bdf85d84097. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:42Z), 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/ISA109903603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5420223db56141ffe68d86af5b57a29db08f40eb4ce2d44a9f46268e592779b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ISA109903612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a601eb1410b01633fa1fba09372a362b30cea1a537b58eca383608e5a68faaf. 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/ISA100100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc3b79e309ada430e5efb3f05a367590a001ad0ef49320db6b3e087ed44c6a. 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/ISA110201165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd48ec8da3ce605a1e089a946f037e090d7417ea764a90bbbddf8cb390a9910c. 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/ISA110201166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15c97ce0cb4c3d766162a6b994e8c9d6103d42e90b4355a9d5979826d7575f. 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/ISA110201180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f4b862e7f808945b2fe67e1c8c6bfa5573dff97b39722b3e36cf4351c65fa4. 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/ISA110307107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cef272feeef96d0766cfa87c9ac34f2740fad43cbbc2d8c2e7e9f06430c037c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ISA110307110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe678f897824c2993c15fc8f923dea3333258494a04c64cb9d4c8a8ad225dc8f0. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ISA110507718.
Björgvin ásamt Sinfóníuhljómsveit Íslands og gestum (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113641f802eb4431e312ba2726751f6c4bae7249d40c09c5d775fbda0f835951. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:25Z), 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/ISA110608019.
Björgvin ásamt Sinfóníuhljómsveit Íslands og gestum
Jólagestir Björgvins í Höllinni 2008 (Live)
Vísur úr vísnabókinni: Einu sinni var - Út um græna grundu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc301ddcc6f4e6e12fead85c0711050783926bf1041007f651360cb02ae71db05. 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/ISA111105520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506576292e4abc8d85d82b2a7cc0918deeb7f46c65baad08b64800b45ba0d584. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:07Z), 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/ISA111303903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ebf34b59974830b4095d10fb9bfc98b929717834021cbe4a14fa7b27f3e1d6. 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/ISA111303905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b641ced7081b048ea5096af02a744712e14a9ecb606c82ee156dc2c4b677d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ISA111303906.
Jólagestir Björgvins: Vinsælustu lögin 1987-2014
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e1d74b502c7e13a64a4d2c8a3c98c97511ee76145459540a0192f72e850b9f. 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/ISA111505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd287be8b14fd7149db9b2645bd3e57e55b1acd9ee9d167556505e0d864928e4e. 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/ISA111505106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf67ed2cf5a6f36d44dbb46e5eb825b319adcb7a8ef4a2b8ef48a82607da96f. 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/ISA111505114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ddccfead3cf934a80ac7f05763de23b4c036c17af7c3ad4d37bd3cc832a19b. 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/ISA111505015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b95c072177b46dca04a3eed9fa11160341be5bf426825841a223bfe6b0ffd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:53Z), 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/ISA111505119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9268f39d9040cff405e7c3f254247b9054e0f7e74825dd219607aec71863b9dd. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ISA111502101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775046a67ee9b538daaf6bfe1b1746cb728ff5019c53d6f7863a1f541d796f52. 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/ISA111600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2c784085e7a254349f682fb9fb1483bc369fb81bd1e790d4af87e137d4a948. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ISA111600503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54f9477a219e00d31194ae9ef4b9517e42edcdeccbeac763e5cd0683522fae. 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/ISA111600601.
Þig dreymir kannski engil: Ballöður Björgvins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af56a3f4bcb2c07f19d0a1c5160166930b3b5d72e23b608c0e0ac7568710e3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ISA109903623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecbf8bc11a2a77c659e38df6501251075efefa180f7e9ce67411607ff2d53be. 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/ISA110301900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa400c7f67530b5e1f2d2836ed3eb2e06c2b20f82583d82189c90e815ba5cf61a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ISA221100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec87aa54d1be6769ff61813e2d1d98c6bffcfb6be16f52496093aa0e04e99a76. 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/ISB111800102.