thumb Steindór Andersen (2 September 1954 – 12 April 2025) was an Icelandic musician. Steindór was noted for his rímur chanting and was most widely known for his collaborations with the band Sigur R
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 0xe769019d787fa5a6eea85bfade579a27a2a9c818d67833a198acfcbb29669298. 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/1f3dd014-459c-45fe-abe8-499e78580ca2.json and https://artists.proofprofile.net/proofs/artist/1f3dd014-459c-45fe-abe8-499e78580ca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Odin's Raven Magic (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Prologus (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
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 0xeac679199c18bb0d6f37e95b0105098e75e9a29478b954224f0fe1c7bc654132. 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/GBKEE1900131.
Alföður orkar (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231facdc69edceeac2b3783f598c0dd9e9aa003784b8758b529494abfcef3626. 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/GBKEE1900132.
Dvergmál (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947b32d7e2cdf14f67ccefc8678f21b66d13c8ee1548dfb67b1bd71b01bfdec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKEE1900133.
Stendur æva (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594aeec7d663d10e382324a49f33a2d90d4a39443eaba7e729052bba07a37099. 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/GBKEE1900134.
Áss hinn hvíti (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682ff1a31f4ffcbd40c407c9d1891af5407efe8e4740438a4979e334f1ef7f3. 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/GBKEE1900135.
Hvert stefnir (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad4ece14b80b94373a81b4938b4d32163fe9b6db4f9e6eee5de9e87df77e70. 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/GBKEE1900136.
Spár eða spakmál (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e200e5582be633ebe41f23f3d8994e9100b38d452fbb23e3f7fe693f5631e91. 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/GBKEE1900137.
Dagrenning (with Steindór Andersen, Hilmar Örn Hilmarsson and María Huld Markan Sigfúsdóttir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222ccdc213dde4ccee8b7e99d99d77c6c86d98f2ebbcfd6a9457337edb8ffaf8. 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/GBKEE1900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594aeec7d663d10e382324a49f33a2d90d4a39443eaba7e729052bba07a37099. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKEE1900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947b32d7e2cdf14f67ccefc8678f21b66d13c8ee1548dfb67b1bd71b01bfdec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKEE1900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0947b32d7e2cdf14f67ccefc8678f21b66d13c8ee1548dfb67b1bd71b01bfdec. 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/GBKEE1900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331c530ffa705f2a5d152d7805f37bdad397952468bbeb3e171d44a455769dbf. 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/ISU111100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d8b4af162ea2617bb7cf87c03eb7ef3ee06de12be7a6f74b13d5b9e1847f56. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ISU111100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6ba8846873138afc9016dff1e7d79ea828f380b1402550a5b9b004a777ad9e. 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/ISU111100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1e1eaeed80333a2556a1ffaaa075c00b71fa841b72fb64fdebef668e1e9c5. 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/ISU111100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030e91c8c15206f3e99ead181a64020a3856d0c2fde0471074cde0ef6b00260. 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/ISU111100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8c08918c7972ab65978c74fea1c88251982594f7c18ae018d4cef1ea968a1a. 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/ISU111100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27831511c95684e1710625d22b8944d7c1e03b4e60bc8ff96ae55f67b930fe15. 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/ISU111100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5514f0e3c028c14977b70f27ee0f3e90ba4c1fadae4bd3dde035a2833961a0e4. 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/ISU110400501.
Steindor Andersen: Rimur (Icelandic Epic Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e4f24d87657621ac62eedfa2723d25190acc3ed8d44ea7464eefd94dd19f88. 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/HKI190390312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9ab00de74a0b2c9d55850426d232a1387306e79347f8b32cd90262aad8948f. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBKEE1000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e288e8f26164a0fb5bbdcb559bce71c4171dc1f0fb45bf032ce52ff4f99c3c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKEE1000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dce0b16381f9712538aaf79147ea4453fe5534923c63b5e32f7e76d8a6b43e. 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/GBKEE1000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4a4c6f29d3068034cdd3f073fdd81164dded45fe1e5f71be9933c7ea69749f. 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/GBKEE1000202.
Inspired by Harpa - The Traditional Songs Of Iceland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e809bbf8390e389c27ba72ad672e559e65f63f2c4df92d56472ba6789a7066. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISU111300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc49616914271a8d57a124138a611bcf2121b0bff9bbe97e1c720b6056fdc5. 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/ISA111400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196fcfcf9bb6ed2ea1d487fa10139b1d328ce18ab5fcab34842a4bfe44c10a5. 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/ISA111400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b547919ccd60f9bf0b26cb3d6af7b1aa1699de46d473744afc83563ea7557b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ISA111400505.
Screaming Masterpiece (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fb80406f223b65f79501e3cad539fb65bb8866755996220111a8907457e5e3. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/GBBTF0500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f97f84d5eefda4dab0ca9f4b3e3440b6135ffc2611ee93d700e10e2815dc1e. 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/GBBTF0500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6683e893844cfa7d19b981241b455bdfe76defbdec51f256151b8a6b1b1bdd5. 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/ISE100202115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff8526e88cf93f91ff2dc274ef4c431fa6869539407ced94511b0f14ccdf1ff. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ISE100202122.