Ulf Peder Olrog (27 February 1919 – 13 February 1972) was a Swedish folklorist, lecturer, composer, songwriter, and radio personality. He was born in Stockholm to Thorvald Olrog and Hervor Jeanna Am
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 0xed8717205957a86b1a848912d7ea4c3116169271dcb0ebd6c087c90ef8e8bdd3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a7f332f-eee9-4074-a7ac-34601642abab.json and https://artists.proofprofile.net/proofs/artist/5a7f332f-eee9-4074-a7ac-34601642abab.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 0xd2552ad7f925a7c6926bd1f3083b2c95e7a2def4f864169e5d5904893dfc63fe. 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/SEANF0100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621e9c73545fc0792f735e80689896944d0c6e233d62abbf90d977b53aee2d69. 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/SEANF0100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783b7fa69910d971128ed31086cbf9525bcb5cec97c4c7fc4f8122591675870. 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/SEANF0100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1024f38b44c6192d059533df9cbed84133113a7619eccf21f512da6c77c1b6d. 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/SEANF0100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575bee67a7b652cde4787fbebc0f619e64a4fefcc9d00575539dbae9572621e4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SEANF0100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b5f43054f55d00fa1bddc730721aede88e7a7f390762631f19f0f39a74b28. 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/SEANF0100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a399c9ba69ff7a7c45d8ce2413d530e5ddf1f619e7fa8d68ca06c6eea006748. 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/SEANF0100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdebbc188c4612173568dc666a3692e5454df87ca107ea05e18aed0b8cd4cd7. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/SEANF0100225.
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 0x87e9ec023e63dac82c0af6b1f3d82ebbaef735a8a4614c014f0b1367667a9801. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEANF0100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf4df05dd9d122631e3dc0be4c7c977df95f750ef83a92970b882aacd010b9a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEANF0100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631a93be20c242f33a26328a6151a71c83b91640f11a73df55bf2216036c7a7. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/SEANF0100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b531160249909afc00040063001c20ab6e1bb335ffd161f1bb71fbf3bb94e24. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/SEANF0100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e266ee228a6f5bddd234182c731c8c761669ada0ff6772a6b3784e85d46bdf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEANF0100223.
Jultoner Fran Forr (Swedish Christmas Nostalgia) - Original Recordings From 1928 To 1954
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cd54e7e8e49dd1a54202fbb077aa77820f1e378722aaa7a31416621c5244cb. 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/HKI190615230.
Jultoner från förr - Originalinspelningar från 30-, 40- och 50-talet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cd54e7e8e49dd1a54202fbb077aa77820f1e378722aaa7a31416621c5244cb. 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/HKI190615230.