Keldian is a Norwegian power metal band, originating from Aurland Municipality in Sogn og Fjordane county, that made their debut in 2007 with the album Heaven's Gate. Their music is a blend of classic
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 0x403e5241474d9721ae389753604ff42c816317aadb225e711a16f6ce64732cd4. 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/33616e22-ad4d-4117-a35f-5a9f5ba67975.json and https://artists.proofprofile.net/proofs/artist/33616e22-ad4d-4117-a35f-5a9f5ba67975.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 0x505ed407a7417ed81cc562e9ed7d7b36b3c42670f856905b54735553310b5e93. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USDHM2027776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5bf68b7dbe2283f68f7fb460544205809e769e2c68aba9220a0c8eb8790285. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USDHM2027780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc27d5d5bba47bcc7e28447d7557ea57b6ca53fdeef87bbd88fa1478eda8c770. 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/USDHM2027782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611b39385245739886a6b394dce8f7bf03341ff54ac30b9daf69ede9e0d3fe83. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USDHM2027784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795974c20466b23b231b3b6d720126f1ce1b5fae028a226056ea4de5e67e9fcd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDHM2027854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94824fbb2503a48dbff633bf21944ef7e948ebb8d309815415f35e157336ae53. 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/USDHM2027855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525fb89b996c20040f2ab01479029484928e13af9f218c496483fe9a1be8be68. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/USDHM2027856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13501012d5d470ad41664c6fffd621fcbd24224471fd9b7fe56d27dafa5e3d7f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDHM2027862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56edd29f8f3c694ed335a73a11df358b89ec1940ed01e15da0c319753d57c8d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USDHM2027915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a10490c14ab9bcd31ab8084cce60634373beb0fbdfdca85a827d878e2f253dd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USDHM2027916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0816e4fc01266e873cfa2c8df3eb7486fce5e75c46f19c0adcf8257f765c3c08. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USDHM2027919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3b5561f63b0820ad5bf9d0ec3f1a64cfea59436aeb9c655f9b10d8bb89f35b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USDHM2027921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3fdd19bc69b9173d074e98ec46743865a0a04f48e75af2287927f9eff2135. 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/USDHM2027923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c20558691eeffc746a319eea80f3c10451b80538d4583dc284ba213337fe783. 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/USDHM2027925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9c0128095b86dcc77e6e0ce0dae52d0edc56b73410f0a3f34315b977d73f2b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USDHM2027928.