Ylvis () are a Norwegian comedy duo consisting of brothers Vegard and Bård Ylvisåker. They debuted as professional variety artists in 2000 and have appeared in several countries in variety shows, com
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 0x996d203a52405243e29625396bcba6c86e4c7c55a70ee904f9a04f4d3e373a1b. 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/d6646e24-9323-4d47-a83d-1a5a458b9095.json and https://artists.proofprofile.net/proofs/artist/d6646e24-9323-4d47-a83d-1a5a458b9095.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stories From Norway: The Andøya Rocket Incident
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 0xfd8ad60e92d8d8e613f27ce6b9f634f8adc9dd7a6ed071cfc2996b5daf0e44ef. 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/NOUM71800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06fce0dbfebd4c04599010cf8c1f614e6da2a0b1c3e17946ec0a97c48b9749. 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/NOUM71800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6158be7093ff795f0656d2f8393fba4485193e88722ea3f50fc2287b9d4a3813. 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/NOUM71800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421ec8d99b8511371639f35805db6e90eb32674f5b00deb3e65ae6ad4dbcbc6e. 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/NOUM71800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dce8f5a4dd1588bfc9fc62f3adec3ca5ceeea5aca72a7edb726d44b12f85e4. 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/NOUM71800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adc8b8c9b7c4fa63f69c0e4a4aaeaeddd9bed2a74cb2183aeb8a94f9dd806d2. 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/NOUM71800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e133978acedfef9ba5096b341cd48d8a4a4b2b84725f3ea28a26cf02f19064. 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/NOUM71800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdca335e2ea15d6cf7603b251de41d60b60c6acad4139961053c2ba71f2e821. 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/NOUM71800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0508c2bb9c02ab0e488a2aef620419861cd31d0ddc45cb23de7e68b9c7c77e. 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/NOUM71800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a54e368d59cc940fbbd3d643d26414965af811423c276d6dda2c99fa7f179c. 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/NOUM71800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf05c2ec6aac258b8bf266e8b53573068c729b4fb85ba2e51e9a52225a7c07ab. 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/NOUM71800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51c610bf3a6c4ab1e608247f0792f07ebbad83b676ec7fe917fb6d1265b6bef. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOUM71800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3064df2f2fcdf356374ed45970aab6825adee2de3825f3ff3e96e12bf4956. 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/NOUM71800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e56ad498c748ff970c3aa631c8d9e0211b085f28ba48fcc8727497bbb6cad08. 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/NOUM71800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9a2792528f85391cdbbfbc0b46fbda6605fa74ef71c8cea1480308ff219fbe. 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/NOWHG1201030.