Control Denied was a progressive metal band formed by death metal musician and Death co-founder Chuck Schuldiner. History Background Schuldiner, in a 1993 Terrorizer interview with Borivoj Krgin, men
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 0xe5cd346f1e54d99ddfdcb00e101120b96523e6d5be99dfb53872c2c1e5c3f5e7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90d1c22f-a0dc-4da6-a695-29eac53a5a5b.json and https://artists.proofprofile.net/proofs/artist/90d1c22f-a0dc-4da6-a695-29eac53a5a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Fragile Art of Existence (Deluxe Reissue)
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 0x47e7b69449e32843a8b63434b183073d5939f76ff11a457fa15979dd3162fab6. 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/US2641011801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd25607fb420f4e55196b504eec0cdfb98f5af30d68035d24b9e12c51c56fc2. 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/US2641011809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d7fd8eb5df4beabafd69c297418e69f629e52204f92ee4d40582a05df698e9. 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/US2641011802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baf2e0d10195b7c1efbe6f1165e630a8113fcbf3288a47cc7b175f2259538d2. 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/US2641011919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c34875dfb5992b50ff9dffba752bd838638d92a301c0d7bcd86338bdb9eb5a. 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/US2641011803.
The Fragile Art of Existence - 1999 Demos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07cc06565195d0331d63a1e91471b0dac487b940ba4ee1e0b129b253158431. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2641011811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd193b2319fd173bfb96d39a212e44df19f39ec325316aa582d14f4578c8e17. 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/US2641011804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe544832b8d2f3304ac582d8c0785688e5f28463fccd9455c0e6e0a733531555a. 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/US2641011812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95d6844a6d3f39ee967cadb89545d52d5721c26e366c6528f36f9c30e9f03a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2641011921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f0fcfb6a78d882302beca10dd7328969770037f514a9cf9b1e05d4a986cdb. 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/US2641011805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d926bd1e8e37f7b6c6aab5ca871b51f574ae018c55ff90cbfca510ec6ae232e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US2641011806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59794671d118ffa6b53255be88a719462357a3f09878ac29c7038a64c3d16e. 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/US2641011814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a70ca9d22ec4d3e98bc9c5e2c1aeeebc38bfee82e27fb61a595e6bdd77459. 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/US2641011807.
Expect the Unexpected - With Chuck Schuldiner - 1996 Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f870a137b8c09b20b46b22b0247f709ccf2af0ae9ea73bf648dd8dac47719cf. 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/US2641011924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe0f0274c8236feddabf344da7bdf98d86a648f05c40431daf010001381dd1. 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/US2641011808.
What If...? - With Chuck Schuldiner - 1996 Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea83e576e38b9105890630bec3c23930c809876fb8dac4cb1dcb92a189258b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2641011925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0d75fa00259f97b64bdb56ad59c5d1123ad184f26a473281e1b0d95c27f87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2641011817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e7b69449e32843a8b63434b183073d5939f76ff11a457fa15979dd3162fab6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2641011801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd25607fb420f4e55196b504eec0cdfb98f5af30d68035d24b9e12c51c56fc2. 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/US2641011809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d7fd8eb5df4beabafd69c297418e69f629e52204f92ee4d40582a05df698e9. 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/US2641011802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c34875dfb5992b50ff9dffba752bd838638d92a301c0d7bcd86338bdb9eb5a. 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/US2641011803.
The Fragile Art Of Existence - 1999 Demos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07cc06565195d0331d63a1e91471b0dac487b940ba4ee1e0b129b253158431. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US2641011811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd193b2319fd173bfb96d39a212e44df19f39ec325316aa582d14f4578c8e17. 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/US2641011804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f0fcfb6a78d882302beca10dd7328969770037f514a9cf9b1e05d4a986cdb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2641011805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d926bd1e8e37f7b6c6aab5ca871b51f574ae018c55ff90cbfca510ec6ae232e. 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/US2641011806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59794671d118ffa6b53255be88a719462357a3f09878ac29c7038a64c3d16e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2641011814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a70ca9d22ec4d3e98bc9c5e2c1aeeebc38bfee82e27fb61a595e6bdd77459. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US2641011807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe0f0274c8236feddabf344da7bdf98d86a648f05c40431daf010001381dd1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US2641011808.
Tune Of Evil - Chuck Schuldiner Comedy Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0d75fa00259f97b64bdb56ad59c5d1123ad184f26a473281e1b0d95c27f87. 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/US2641011817.