Vastum is an American death metal band, formed in 2009 in San Francisco, California. The current line-up of the band consists of guitarist and vocalist Leila Abdul-Rauf, vocalist Daniel Butler, drumme
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 0x4f1bdffcfd2371b6891b321f6d97d00474ab7ae18889e744bbc70b0dc439615a. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/489c35ba-52f7-4e58-b695-b4b64d06df4b.json and https://artists.proofprofile.net/proofs/artist/489c35ba-52f7-4e58-b695-b4b64d06df4b.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 0x267d80d8dd1592bdcc32b444cff6b911c0728b7ea831d7e5b84965bb4a29c9bc. 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/QZES91824340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f322888aaf578324013927367e87d5ee8a061e5acf3ee57bd24897f2c711ce0. 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/QZES91824341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e30272860b5497a0820a3cbaa0f2cdba92944c1e03716fa6fbb36748d7dd1. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZES91824342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda0ec0921933ce4527bf06ca9c735cf66368d5445f3b2e18e62043db9d2e458. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZES91824343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01f0a5bc890b566dbb399b34f38c81c84bb09b573916f75fca4e876239910bc. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZHN31981758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc863371cd1302bf92c50dd238eeeafa4c5abad2fa926deebf20607ebff58bb95. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZHN31981759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4775975f4cfda8523a3f9891e0437fb922883d35a84cd91189650227af305a7c. 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/QZHN31981760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9400049b62a732947fcbc9d08c486879df99be4ca9583eab0b89b5fbbe32b5ca. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN31981762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279668f8c9732d7e8c1f051198247fb58d4eeca5b2926b660cc583e8d4548892. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAW2316143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb84280695366664f2031b6f04f09fce2426526b7ae31d078784074ba1732952. 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/QZTAW2316144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384c914bafaca53b48b2d89eb89133b972c665983fe39b7658b6117f175b35e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTAW2316145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff732a58faab097ce93d6d49c109a6043c0e63b156110f32924872227e800c1e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTAW2316146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f931da0a3c3a90415d4a1c32e9fa1097696eb4b4e0778b352063480173633a8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTAW2316147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd947fe854e4a33d5d304dd111e7990471a36634acc66e1150367a0f6b65f5c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTAW2316148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c075353bd249211e691d09d0f74ba53264cf70bdb5b7ec6cf616bc87158f72. 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/QZTAW2316149.