Aeternus is a Norwegian blackened death metal band from Bergen. It was formed in 1993 as an idea of Ronny Hovland, calling himself Ares, and Erik Heggernes, a.k.a. Vrolok. Later in 1996 Nicola Trier,
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 0xc0071f7ce5cefcc4482d9a2999d56b82be3fe21966c129d916e3870b66741658. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/724f74a1-5de5-4754-8647-64d4d8805be0.json and https://artists.proofprofile.net/proofs/artist/724f74a1-5de5-4754-8647-64d4d8805be0.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 0x7f387e84f749b5f36013566bf8b26a405c7e163bdaccf051b9e68a5c7676bbce. 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/PLC172300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f8d905dc396af00831d317ec8a8d91957d6cab8082c8f6dc4a30d77aaa4f38. 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/PLC172300802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4b9023216fc2323fc2538214ece908d5d96978ec32d8ad887dc6ba093bcbf. 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/PLC172300803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5751133179ffc12a10ab9e9c3595a1882f874a5ffe172bae8d5207d4d5d65. 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/PLC172300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1920b2c48cca2c2120e20ea5bcafc3ada8140166e70038f96ba96611976caf20. 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/PLC172300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83fad33b548045f0e7b2ba03b2623ed0c3b9d2577d24d803acb176182551e91. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/PLC172300806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64aac8cb5d071418e0ae8fa138b9f7f54b0327a3690962f9c3832ae7ee1cfd1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4JJ1846245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74c882e2a876eaf5bd1c5e7c1ab2ce298b7d8b110aa983492f739bc8d72cb1c. 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/QZ4JJ1846246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8307d4382066f8ea0fd806b12ce50103345f454ed173d513be4b6e1cbb423b5. 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/QZ4JJ1846247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ced10dda0aa87dbebf50a76d35d62f18487454faac48a39243af32412fe5e. 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/QZ8LD1957433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ae6bf79585863816f9728f0831f3b36e5aa00178eb9fcdef63bdf03bcb2f17. 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/QZ8LD1957434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7978edbcd124bd618c4d963680b5ae3addc8e43a3dac681e1059e41fe04962. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8LD1957435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8171737ece6ff46f9e351aab3067cd6784eab7f1ab9903ebd24cc2c7739a3391. 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/QZ8LD1957436.