Glenn Branca (October 6, 1948 – May 13, 2018) was an American avant-garde composer, guitarist, and luthier. Known for his use of volume, alternative guitar tunings, repetition, droning, and the harmon
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 0xd1bef17c829470549933874bc2e4dcebf9c4179e618f3552de10cae69f05b43e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55f9be9a-db55-467b-81aa-653b1c467a1b.json and https://artists.proofprofile.net/proofs/artist/55f9be9a-db55-467b-81aa-653b1c467a1b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6a73de3cbe6699bf34e08b5d092f3c384bfbbd3839a835951fdd6804643c7. 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/US29V0524501.
Symphony No. 6 (Devil Choirs at the Gates of Heaven)
Symphony No. 5 (Describing Planes of an Expanding Hypersphere)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8788d0fcdd686308cc4949144e4f7a3fed432bcfa474378160d7000ca6971acd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USA560533418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84fb927561e0229fbe8c3a1a4738fae76cfe89c3bbb9836ddfc2c8ffffe4dcc. 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/USA560533419.
Indeterminate Activity Of Resultant Masses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102fd23a7e1b71de3907cba8c79a6950e8e37be96d2fcb99412c95c8c1d30e4b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ1178304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82801436a33c0415f985abdfa8c7eae9e54ab0656a41763ccf331eaf318fc10. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/US22N0420201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cf554e0186aa54820f298788e32da6ec49933d46c421744870f34522ae91fa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US22N0420202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39404856590085758b1982b1c38ab0cb966a5cc5c5f56098e640fc71a00633ed. 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/US22N0420203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f79e1abb46cd70191830ef1906d1abd90446563081df8c973e818325a26143f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/US22N0420204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bfa4db68689a7c584ba016a98af5cc0bfcaba6f1e9c4306f6e460bf5d3a237. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:32Z), 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/US22N0420205.
Symphony No. 13 (Hallucination City) For 100 Guitars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4a17e6bba3fcc5278646ecc975852edb3577d2918b4f32c6da57c33f45ca29. 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/USY251978449.