Tor Isedal (20 July 1924 – 18 February 1990) was a Swedish actor on stage, screen and television. He appeared in more than 70 films between 1952 and 1990. One of his sons is Swedish actor Ola Isedal.
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 0xb17df9e68097f0dcb2de8b43f0a29dc9861f41c4b8e0e2b23ece45331e225c21. 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/6a152db1-1321-4844-a97c-63ccc0f47790.json and https://artists.proofprofile.net/proofs/artist/6a152db1-1321-4844-a97c-63ccc0f47790.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 0x33e362b24dfb59bed83fbf2cc25b0280f234c9e43ccb86110bd40dea85061f03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEBGA1601196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918e3ed96ef4eda7122cfb3ecdc288585545263bb1240e36bf17ed12fdff8f9. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/SEBGA1601197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722614c83b0d96a54c2c864fbe07b0fb2eb5c21fbc6299632639855aff2405a. 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/SEBGA1601198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876390e42d22fcfc38c53803c19d5c24ef3d4788b592efa6edbe7bb7437e3bed. 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/SEBGA1601199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c9cc0413157ca417c6b0141cc9c13d2ac31a00185907bc203804f8ffda0b09. 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/SEBGA1601200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ad7a2b1f4340039a3fc15becb93b04b2fd1b870a848d414ae578432099f9f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEBGA1601201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5ab17e1ccd68d56f9f84f78761fc8361e66434812b0295b0bde3e6ac42ed5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEBGA1601203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8a297d0f921f4525fa0f89ba2e2b324da76bf1a0e189c5e09b4d8a576097b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SEBGA1601206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28a9e7b209d6b12408add0bf362fac0e2dcae109263db2209b6d7633fb4b9e0. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/SEBGA1601208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b19a6f668467e769b6faf3964446552b87d8acf468fbb1480b0fd07f7ae27f1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEBGA1601209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf5ee729c7d494431ee1f48fc15f0a84767994e43e3678b1bf702c50742f479. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEBGA1601211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece51ae7777e302b771e15960ca41357ed6b78ec7432c0cbd8979b21d3d5fb53. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEBGA1601212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb088f711cfdb43507990ddcebb1bc1469fed7ed36d0f18bef934cd69bdbe55ee. 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/SEBGA1601214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1109194ce4c67406f5fac501f7c40efecd333f2a7601aea797fb42ec770fb8b. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/SEBGA1601215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f21cabd0b1c6869c1e6aa328004c95fc2d60fadc12f68fae8c3053cf11fec. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEBGA1601216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce0eb975debf7ca7a6a11d0e8f52251dc84a6b377bb1b12b77cf5103c243f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEBGA1601217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf331e7b0e72e1dc8a32f5b76369487663e9b267342939bfa3979b3f66cbb3cd. 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/SEBGA1601219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162984c801098dde5843afb5de65815d834fb7677f8b029a1c036467753c61e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEBGA1601220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4b3f7abb20e6d7bb7f1b11b3a2a3f97b8f88dccfc3b0ec2c464cea13222631. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/SEBGA1601221.