Mortem is a death metal band formed in 1986 in Lima, Peru. Biography Mortem is one of the oldest and most celebrated bands from the obscure Peruvian death metal scene. Founded by Fernán Nebiros and A
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 0x224800dbc6b4a43b20c0ca2adb506fa83bb3969ab1afff7329f6b74106621711. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3e2fbf9-5b8f-4571-ab24-edfe98b0381e.json and https://artists.proofprofile.net/proofs/artist/f3e2fbf9-5b8f-4571-ab24-edfe98b0381e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dark Side of the Sacred Star (Peaceville Compilation)
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 0x03696cb5c7c84d6e79f5fcf7f39d639e5a04386dfb9691006ff871220f94bec1. 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/GBCQV2100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2325a00daf00e133fdee12b77e35850411e935ebda110cd0e43702c807ad33b. 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/GBCQV1716051.
Feast of the Grand Whore - Monumentum Split 7`` - 1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bae596787a7882ce0f816ed2edb8398931b22457459c152f94232d0b2cce3f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBCQV1716299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8fbd47b60b2680f5cc7a6e953fc37ab460c5f713aee5c6364d6a9e352279f1. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBCQV2200663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ea69958e8adbd6742ee67a69eea3a62465cf969d871da83d2080d926a0088e. 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/GBCQV9300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20195a1a37f14baf9f8d702e3463f750976104bd3e9e2e71bf48ca609de9a08a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBCQV9330028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c2e4ed7ba47308d639e6b6336b3da7a015da26cb0da06a4c037b1291e1a4a. 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/GBCQV2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef2038c76d225ff92f53764de4b3b2bb317df1d27b0ac1a20055d90db70e252. 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/GBCQV2200659.
The Pale Mist Hovers Towards the Nightly Shores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a1f312c5e47fd21a4be952b82fd74d251af87912a5766691749bac95f798b2. 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/GBCQV0800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a290bf77c5b8e1c872766fbff8eeff8724c1d013c626379eee5c487d7986cf0. 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/GBCQV9550015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414ca701026f23cc6d5710df61f2e87af663bf96dbee7c42d02dbd6fd63b427. 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/GBCQV1200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65438c866ebcb4ae586296955b41acd45b77dc9134ce3d743de30e6dc9b1c26. 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/GBCQV1800498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85cf31b538d63431ba41d800d3b0898312eb922b6ce4a103d6128e34e1fb60a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBCQV1200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040a206e001b2ee6f99102d62899547aea44683f56d22760b752766929ba049. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBCQV0700361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8d71466948cc7a2c81f20b8b3c282b84f2133b9f8ebe0c55cac205427f215e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBCQV9600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4315cce9e7cdf94a532e3c36744af40dcb66a773a7773fdaba844762a6e1e6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBCQV9600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a172cea7df7efe4cabffbc48838d15659c9ddeecb7b2a25d89feab3f16a1d87. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBCQV0801735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41dac9118581b6aff6692eac72e76468779b01c09c8ca290b85d6a533ec7021. 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/GBCQV0700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7588652f8d0af5059f2db48e52161862c532a28adce119fc6951d4c93fbd5bd. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBCQV1100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d6475df56991ea172a6a2f2ec7199d307b356658aadd5380825085285f560b. 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/GBCQV0900728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc9d0eddf0b5b75708f2c890afe67f4685b92d5fc03ec26b69ab0049ad7646. 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/GBCQV0901257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d62343252556964d43d6bbb9e9c608588a6148740217316ec45762dfeeb43. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBCQV1900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dd457bfefb6e8345b1bc81443cccebb1f7ff633df45c5d40dc58cd66b6f7ee. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBCQV1900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b33c66f7652d65d8beaf2600a2167a6f23147a66f79a043f5a0e5b7d4accd97. 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/GBCQV1900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37780127eedb5c1003a43b526a70586f549b3cdcb207239450a31d1010084d12. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBCQV1900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ae7c8a94dd5dd45e553facf67dbadde2a6efd345ea59ab24220f7a40dc1722. 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/GBCQV1900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6703fb57f9ce8613e32072fee02d3fb4efe6319a47d0d9234d8fea91298e7a. 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/GBCQV1900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55177eed07d764727c588165434d80f1b0d8ae74b9ace3b283c1e9fc11c99ad3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBCQV1900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f4f74cbceb05d326bbed35771a10039c937048a7378691c9281c1c427e45f8. 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/GBCQV1900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6734c1f8212537790ddb1b20ef4afee470c6a1c5048f7119c0f32a9230bc8736. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBCQV2100092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad4e8e85db18bc67a860c7b690e1b375ff98a72995f2c4abee0fdc074e10d3. 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/GBCQV2100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc29b248ded2dd0651f0678810070748bbfddb76843f73ab798a3a7e1de81bf. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBCQV2100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edc31e50b1795b3b878974899fd75cfb68a858b6908cc6bfce478acda12f9fe. 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/GBCQV2100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7b815f7d54485b4bce4a2d4d16d0705d6a87a7565def2db903d57fb031cb6. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBCQV2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4018fb6fa1bdbb1d97b79f164f0be96f29b42e2a6eb54f0900aca8a7a5b1e34. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBCQV2100100.