Guerilla Toss is an American rock band, formed in Boston in 2011. Now based in New York City,Johnston, Maura "Guerilla Toss returns to Cambridge, chaos intact", "Boston Globe", Boston, 21 October 2015
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 0xd30dfc529d26dc66c8aef59eca24798dc4076f67cdf48c5219b66fbfdab9bdf5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/063859d0-bf0b-43cc-be8a-7d0ae06b1eab.json and https://artists.proofprofile.net/proofs/artist/063859d0-bf0b-43cc-be8a-7d0ae06b1eab.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 0xa794fd75fdea7b9b508374aa3b71681119147640bb10250517f63c88c2883597. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US4GE1600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381b8d04a90be5961cc20788acb951a029994632739f3fb67ff5873a150dfb06. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US4GE1600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b403504740c382721de1922ba0c1d239ee5d2a5235852b9959845c4021b489b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US4GE1600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0737b04774f3f66f70d59970bb67da99d1da5d9e37d492a32d0a55fb9a2610. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US4GE1600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c89d19624075111d6e287e217af6f275e6e856049d0484d75a945d233f44d4. 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/US4GE1600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9067162b0e41604272783126168baab9f57e5018ed5d9dadac821969b1d69b. 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/US4GE1700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b160654c56c830a17134c3144c94db6d2b29167cf10820c7c882c2180e9e3b6. 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/US4GE1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73beadf921ae1671e2c05d593942c59e9b640bf1beb7ae9344f02039e6d8cb18. 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/US4GE1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cf69b6a5576e6f91edcb24c34e2026b7b06651659388404211be5c260d8a6d. 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/US4GE1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ffd23445fde296fe9bcb4fa1ad67ece2b6e07b06399118fd6e24e4d5b0575. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:11Z), 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/US4GE1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c46bd52453103e62a25434009df619c72bbe256b8d7288d8d3424cff01968. 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/US4GE1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd69b4985c884eb4c562de20458969cfc644a9aa402bfa11f479631d748c1ad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:18Z), 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/US4GE1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6535e05d7b9133e606b794093446e919ad7098c5ba9d10eaf164254bab4ac5e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USWEX1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e8380fdc7efe8737a6bb10d2ffb605c9ba066f34d97ef4b3245885f91b643e. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USWEX1900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58016eea5fd829da77876bc0aa8de6b4962f73c208be22c3db2e46168687f9f3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:47Z), 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/USSUB2036201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b80ef612e4a2104a9ce8aaf632bb818aa714295f0ab8a95be9a6180dfd58f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSUB2036202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2902071dcf6959028d6afaa3b3925d9e22c1c6e1421adbe5121e4f8c80544e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSUB2148002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07115ea3c8268378098089b53b42d396a0e83f23889ba7335a4b780ba632d9e4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USSUB2148003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281613b7c7768597aeef88071fccdb5fec2185925722d96396f4d2eb78642f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSUB2148004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92852ff13a9f556302b7c0ff468acb7cacc27b2cd81b959ddad6ad29f0aaaf4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:07Z), 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/USSUB2148005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54683314fc1d79810979d7e902b6d5df7d41f6db8682f0ffb2e67a5a3d099d89. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USSUB2148006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2855ced1d443cb99f504188ad512545d511b91fff3684cee9fccc37507c05fb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USSUB2148008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12112983483d6835a1b4dc7cca7be755e03950740717934d3c94913121bb47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSUB2148010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2997cd50d24481eb5632c9d5fabbe7ee67fae238ee93ed351cc6c35392bf9. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USSUB2248000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e7b6d72c28852744cd4b3b84ffef870594bd07c775939c8f5d3f0a853fd7e3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:21Z), 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/USSUB2464514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca6267ce4b6252f1604275e064aeee05bd3ad187c1d73e26129d98d0f14e1fa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSUB2464515.
The Eleventh Hour: Songs for Climate Justice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fa8d7e0c74508bee5ae4915b115ba14f2b7a1fb2a3954fb02c4863e1e2f43a. 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/USSUB2255810.