Butterfingers may refer to: Butterfinger, an American confectionery brand of Ferrero Butterfinger (Canadian band), a Canadian alternative-rock band Butterfingers (Australian band), an Australian hip
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 0x8e1243e08a81f7ba8f9db26c1f20f8d9ed98ec1caec9552f2fb342d46b1d3570. 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/eb545cfa-a96e-4093-935c-486f50a766bd.json and https://artists.proofprofile.net/proofs/artist/eb545cfa-a96e-4093-935c-486f50a766bd.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 0x19cd55428845dfa6d2fa1ef6c25ac413bc6bc6ce83112e09ce65b1e2110dbfe2. 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/AUVT00300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c4caad65fc677e023ad26e66a1397e2a603e21cbbf6c0a0952c009d6ee1230. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AUVT00400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4337f11c052659bcb227431cbb141facf6cc453cdabd9a29d82709ff1bf9c8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUVT00400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3059202fa96a5aaf26ce825a7bb724fd84e08cb9858d7ee3563eae53cd1856. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/AUVT00400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cde1e645843fd81f1b830aff76956a99d241d6034bcd18925721bacf893eca. 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/AUVT00400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab228b45f4d0167c20245b817cff8cc7ec14915f1bad43de3c9b190733e3f29. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/AUVT00400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700c749c5a352820447a0bb40996651cc088875277391a46e406c233686fcc1. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:52:15Z), 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/AUVT00400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8778d1bf28e88cfb7d94f4398012787e7777948214837cc1d38f03042c5868. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/AUVT00400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4598871780c98deea77828d92a6f385d2bb25cefa5ed0476834a7bc314ea0bd2. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/AUVT00500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ecf9e1b405397151c12d01a1d27de7405eef21b7f18622f4ae1847ee7f5340. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUVT00600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c56c5aaa6618f9065590e93e229119c543f8c7aafc5a9243095c299f309cf5. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/AUVT00600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19487ef350de7c6f4c94c4aa805587da6a938f3813d58830b52b57f27f5fad1. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/AUVT00600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010c90578a72594f4a7bdc9c4375949502799b312e89e25a135c52f8a0cdb74. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUVT00600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596e052e4537c01145a3b6529ae8ff366d61ec2c4049ea5ae0f86953d7573c6d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:40:27Z), 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/AUVT00600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8023631f1eacc10d76895cf714272e5722ef337b671bb6bbcd7f396ea35dfbc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUVT00600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c5368b80bfa127b0a6658a848fc138a84199860921fe42ded2e8a7d43c7741. 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/AUMT41200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1d567a5032e6651cabeebf730a22c34e6fbde17bfa478be6e9133396e07f1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AUBEC2001355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1d567a5032e6651cabeebf730a22c34e6fbde17bfa478be6e9133396e07f1. 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/AUBEC2001355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a9c3b8b941abf76c74262a5fa583d57a5fe3c35f05ede24e8f8f2648701ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUBEC2014127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8b9be84704087815ea6a96ac2bc77122579a3fbb5f028bd3ca31df58e98052. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUBEC2014192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f55df9e21463e608195e645ee37817a221352cc07fc15cee87d55f76219581. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:23Z), 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/AUBEC2014297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c838b60fd06457b722333637b08057386ce3809a602381dc79362846ef1946. 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/AUBEC2008737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6311747f5bbe4e78361a683501da719213aec29ae21413a75a014b0e885242f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUBEC2212099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c99328597dd9169d6d7223ebba952c278a26326123dc517e8d1806a8ee5ad0f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUBEC2346348.