Extol is an extreme metal band from Bekkestua, Norway, that was formed in 1993. The band is known for playing a variety of different styles of metal which include progressive metal, Christian death me
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 0xcbb2116967a7a228548a41c71d7fec3a6cf75657bd643530c6246db90ef43488. 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/10a8d8ed-68be-45bf-9b0a-6f65a9dbefad.json and https://artists.proofprofile.net/proofs/artist/10a8d8ed-68be-45bf-9b0a-6f65a9dbefad.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 0xcce1da3d63ebcdc8ffc108606f24ae9fcccfda86d505ad8d226df2c505bca0d2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCACX1761255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e90dfb68e96eea34f47c1ed76c2a090f99207b11c117fb222c5b17b5f9f49a4. 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/TCACX1761258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1998e446a636e17fb5636dbe870c01a5fcfda0d0e2b8eba30cb8747788b6ccb. 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/TCACX1761259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ca1840bbdc24d3eeb761171042be5221dadff26b0ace857894d539b1128a82. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCACX1761304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa0bd90d9d35ad234d60395918449a2207dcd54e4f09a43eb6c2b469dc3945. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBMJG1706959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2638ab2d3bb36ccd43c90ca90fa6f7c221b1245b9dc0805633fd1c12e67bbc2. 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/GBMJG1706960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c23d53932266422e177c67b1e85a48bfde403b43481553d172762be7bddd7a5. 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/GBMJG1706962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e657d3f4c4f6746572fa8a710d841d54df4b65e1a869bbfa41d980761966b37. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US4E40420701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f1c5b34c9365357aee118dea6e92c731214c3e0acd91f307f35b327786a876. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/US4E40420702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7731d302c9daa04c469a74943922fcd754d770f67385382401cd705a83020419. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US4E40430701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62d3b8d7057d9418633dadd679c24f680314b7634e1f16d95626cc6324a7ddd. 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/US4E40430702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe07c15fab827bd4aecf3209be71d4954b2b3837736d2cddf2350682509947b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/NOCVC1313010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db33e5bf3ff6fe05007c9b1d607f0ba4844369588bf8b14e8c3f0ed9c3c3de9. 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/NOCVC1313020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da41c521051fdc5175777ec5ed49313a23f92ff0911a1795c78e14c52a7c69. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/NOCVC1313030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ba56674c53e837657d4267d555dd623a4fc95aeab33a3444993ed1892b6b83. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NOCVC1313040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d46175cd8a1764f6b5234a1c477d227e79b32e11955df8413a1141d4a29c5b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NOCVC1313050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb82cb6994d583e97b76b82be39fcb978c41dbcfaee5cc734fbff909325f8a16. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOCVC1313060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4e20f15a4346fcc2ec1c49af649f738635c1c50af550ae214a1ba90b2d276. 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/NOCVC1313090.