Gone Is Gone is an American experimental rock supergroup formed in 2016. It consists of Troy Sanders of Mastodon, Troy Van Leeuwen of Queens of the Stone Age, Tony Hajjar of At the Drive-In and Sparta
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 0xd03d2e300cb67c645b0f3eafe2dae6c53265b65e2f910fc2653570373e1eb9f8. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae89ceda-829d-42e0-af44-32d22473acec.json and https://artists.proofprofile.net/proofs/artist/ae89ceda-829d-42e0-af44-32d22473acec.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 0xb10a4c2e0257b5288870f8528d2a04aca5c2441f9f900204bd556ce167dde8c7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USEK71632801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dc6ad7f22046b55da76f9b1feb0950e0a6ac7e76aa5657809fd6fa1a3e59dd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USEK71632803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b8ed6d4e2001659149ffe807f7d38aa5c005a424fae8621ca936c2711f3398. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMRSZ1600540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14db602ae974800c03bda2f218959fe46fc045471a61b9a652e4cd06a63dc4d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMRSZ1600541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57aaa30e491a223e0ab9e844510e5670fec6d4c48ddd4a4c7442c50d624035f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMRSZ1600547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e81bd77b5f743307d2321f0af32f82684110bd8029e87ac5d807ca051d3ca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DELK22000566.
If Everything Happens For A Reason...Then Nothing Really Matters At All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75bcdf099b8ea17a959b45a9a37d46794b06b35792e54cc969c1336090400e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DELK22000546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0c7ac756bd5bef7b9a5ca5cd1e3aeaedf75485b4acb11096f02eb55d03c362. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DELK21900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e81bd77b5f743307d2321f0af32f82684110bd8029e87ac5d807ca051d3ca. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DELK22000566.