David Longstreth (born December 17, 1981) is an American singer, songwriter, guitarist and record producer. He is best known as the lead vocalist, guitarist and primary songwriter of the indie rock ba
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x345897435731a41942e7aa2958ba04a8ac5cd31086d365feff1e7827bd387176. 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/ebe4097d-5a8e-444a-820c-6be723c0b839.json and https://artists.proofprofile.net/proofs/artist/ebe4097d-5a8e-444a-820c-6be723c0b839.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 → block OTSBitcoinBlock must exist at that height 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 0x723871a4b409ba89ab51ff0d44a36621b62ab39194710d289fc120511892e3d5. 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/QMB622503901.
The Legend of Ochi (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55c2e2c15783a46d105e5c7be3969b660482c42fb353e74ca638f5cdc6312d. 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/USNO12400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bc764b41681feca521a0973ebfd6c474680ec6d635efc9a23a185610694a21. 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/USNO12400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9d76f34ffa3c2e57b503911b72668b95b0de4d96ef4a953c5240f3a1917c1. 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/USNO12400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eae8aaef07f05bbee79a11e2c143c06391ba7f85cffed0d44c4aa83fcbc643a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNO12400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c62d68c0f44586cff59e5f18b6b207e17624d89481890a69cfa9d71c5414161. 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/USNO12400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f30754f6e8c8e3cf3d580ac80472f718ee9bac87de0ada58c7e62ebb679b09. 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/USNO12400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef1a6535cb98f21979bd797feb2e698fefeb3d96955a34baf1f47d7ff3b358. 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/USNO12400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6654d98606b7b181778045536784d5a13d4a7b056933e66b2d43fe0ec3574e. 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/USNO12400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62546946b6b4d7236bd4c74bde7430a52c943aee1ef93f8bea4be498e8bf1b3. 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/USNO12400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b8f9c94d46aad460e5c2d005902db50d6d107ea13dff7c0d16df5c371c4942. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNO12400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad0fe1f6fd956850db5ee22d610e1ec7d26496f40809420c9669c5e90b06563. 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/USNO12400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e97ad8dcbc154bb979dafbfb162990b279583954c071545a9505aa24427e27b. 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/USNO12400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b00924a8ffb223db37f502a6cd1be18deaec189525cd5c0613eb462c5c69a2. 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/USNO12400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6bfb5627c454fba4673bbc757a7142cad2c336af49738c205474bf396049e6. 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/USNO12400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf5e23f663d79960277c29b0fcbea8a821a0d5a803920c3505c7341f9d90ff. 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/USNO12400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a54e78f04e24570943eb652bfd76f57586fc6537a87daa4f47461e1abc55617. 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/USNO12400521.