Anna Sofia Eriksson (born 22 April 1977) is a Finnish artist, filmmaker, composer, and singer. In September 2018, avantgarde film M directed and produced by Eriksson was having the world premiere at t
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 0xe077ad0af297be731c5f06fe10c7cbf7883c74b081d88ecdffded9ce4d7672f3. 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/2d820227-6b5a-457d-9493-b431e4763454.json and https://artists.proofprofile.net/proofs/artist/2d820227-6b5a-457d-9493-b431e4763454.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 0x7a58b02bab6cdc6978f5bcf702ca6b4211bf4d26c2584b3844e77142e79cf952. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/FIMTA9700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb91635ae385361a4fb315f01c2b1b1d954a7493c71ad1a036270a232adc529. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/FIMTA9700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab436d55ef69d466557df7f6047c3cc72c472f5966cb143d144548816764d3. 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/FIMTA9900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b7f5f439526cb8694257a8d1021cb6dbe4c1ab21c103cd59b007631345c15. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:46Z), 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/FIMTA0000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc8e5502f5164d97a23570cfead5b9d67c1b5afa712cdb0ac724e2dd1723084. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FIPFP0100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d6261780eb5982aac3c4f08d10263830ce85de2645b5795b2fd2de5cecabc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIPFP0300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb596b367e666b8e12a6c0a00f9d2b6d8cb82f595a84d315b5788990ba452d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FIUM70700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d9777de873732f5023a6e907eb82fbe543661e53567da6db0e3a0efa2a1225. 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/FIUM70700622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb596b367e666b8e12a6c0a00f9d2b6d8cb82f595a84d315b5788990ba452d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FIUM70700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e146e402ea220e14052700004c5f5e577315c6b6a10b68e3fccc0c812987e5. 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/FIPFP0300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab494fe792da2b7bbb137cbe6dbd87ce3336606e4880fbaba250cb9a4618c58. 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/FIPFP0300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0cbbb8fdfac8ab51295017ba1ee23f37742f95779c2dff683d40332476082c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FIUM70700623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f210680ac13578b24ebe76a59c3abffe672a221361043209f246d50ccc64920. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FIPFP0100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec6472d8ad347e2bf14e100e1757ec40b4d374be921b0fb5b2f2fcd1c31f21. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FIWMA1200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc38468e62e60beae3d3da4e8303c41d8fdbb9bdb849f0a323331f61bccfd98. 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/FIWMA1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad80ad0b37dba37673da29fc51a3c24f6205d48a9f2ccf4f71675cb0bf9279a1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FIUM70500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb596b367e666b8e12a6c0a00f9d2b6d8cb82f595a84d315b5788990ba452d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:36:04Z), 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/FIUM70700602.
Entre le boeuf et l'âne Gris - Heinillä härkien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5c77d3dbfa676ec184e7ae99cd8c83e4dc1fdae3959439e002f5181b3bd067. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FIWMA1500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5679201ba1efad3b6eb96bb8b97ff48f71e15248dc0854079dabe2998af416df. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FIWMA1500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1432e4b555c65c1229b4a59a7a524f00eb015f78ee12f0f7db25e866a01ce9e8. 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/FIMTA9800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930df4f3e4b6250b4633ded431314f978f8589e3e23b0fd3c3471fc9d41f3904. 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/FIMTA9800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527858744e6ffe11793662c090aa7e3208f194537566170339a9547194ade98e. 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/FIYAM9700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448a73de3a32df37b693788901853dde0e4ca55fc552609eedd3ee549a427888. 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/FI5ST1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448a73de3a32df37b693788901853dde0e4ca55fc552609eedd3ee549a427888. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FI5ST1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb61d1a6a32484576dfbf64bb99f99828f1a04e73382161800d0566a454f18b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FIMTA9700002.
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 0xa57d01b1050e5dbdb6d970ed48e8806e9ae5b50ab9d270522f2932ea1ec79807. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FIUM70600269.