Keep of Kalessin is a Norwegian extreme metal band from Trondheim, formed in 1993.Band biography at MusicMight The group's early lineup consisted of Ghash on vocals, Obsidian C. (the group founder) o
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 0x8ca555de51350f56f0fd83b36c02918b56fefaffecb921291c08760748963d55. 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/65134bf3-ac41-400b-b76a-2f7a29ccdc4c.json and https://artists.proofprofile.net/proofs/artist/65134bf3-ac41-400b-b76a-2f7a29ccdc4c.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 0x8a6a6d422149c68de9593dd5df6911d8dc8289b27d53a6a15ee9939de03100b7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NOTAB0619020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbacf92b95edb8efb26bd3c6413e8dc76180d20e5b1f385811561be7c582f3a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NOTAB0619030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644269b2dfd287d603acff3524832ab914649be63421ca453fe3dbbe9b80e40d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NOTAB0619040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbc9b8a361cfaa452782791e78fe2097041155c9182c0a7c513237b524b7b16. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DED830800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551109dc100b29547da34d4adc2f57bc2539c5fd66db1ec19eaea804d3d49ca1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NOCVC0813090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be325151f21d510d91d38a864ded2be3c976502122349511a03d23d383a1ce. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TX2017927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40ee1cd3ebbb439ff5dfbb1b97781dc16ed19770e32173e920b0d7e68013268. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:11Z), 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/QM4TX2017928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026359384a423330cbbeba04e70c854fe964a03a9f2e266440a86199577992e7. 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/QM4TX2017930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a933701405957424f33a8bb9477eb2b347d0f1be63f5780f2dee5f5d462c6d9. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QM4TX2017933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281ac9eaabbfe5bc58d6560f7a5a9d6b195a6095e0da67a37cd1883a72d20f86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:29Z), 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/NOCVC1390020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44431cf059a18d70c2a273f92c1a9a3ee20bc62b8f0bd421f4333217a15b27b3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:13Z), 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/NOCVC1419020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2113dc293ce565d2441ce6f959a0d2510a4615c35323d81a78f1d5a9cdb32762. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:04:06Z), 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/NOCVC1419050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d649dac32f5e141fae02c24aeb458d9ea608516e4633e9431656a9058cca8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NOCVC1419060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060f1b872e89255f63a5224af0d2e13b04493a65e23a9b66f49ed76215c1e4d4. 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/NOCVC1419070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5167fb152d06972a37c7be640281017197ffccdefd42d137427fc5793acde62f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:01Z), 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/NOCVC1419080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f5fc1f430cd93809343973a7cff9cb82a2e8dadc5c882b3ceafec56686ec9. 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/GX3Q92352623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92c9196f649fc2f03dad3c2c5074e13639c6f33882e43c9f11bfe99c2aacd35. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:46Z), 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/GX3Q92364540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87a905799da54398c2fd4ff56e2a55d4b6b63945bfba4ec57abebaa902242a2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GX3Q92364541.