La Sera was an American indie rock band formed by Katy Goodman, the bassist for Vivian Girls, in 2010.Perpetua, Matthew. "Artist to Watch: La Sera's Sweet, Dreamy Pop", Rolling Stone They have release
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a40400fe6e22a8272ee3f0d1cb5385bcfb6a4cab314224d3980efed6bb7897. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/371ebd36-543d-4e93-bdd2-c7c623923b54.json and https://artists.proofprofile.net/proofs/artist/371ebd36-543d-4e93-bdd2-c7c623923b54.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b92989994f3d755950bf9f320aa390c2962e4f535a1b07eb5bec68a5ca5578c. 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/USHF31205105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb72eff129be6bde7e72156ba35ccde3beda6e66ae716701b24889351f309c7b. 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/USHF31205106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d461194e3ea61fcd2eb4b29406b3c2f63889cbc917d9a300b664bdfb0f256. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USHF31205108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63b69df9bea57dc94942b66d59e496eeb2a8d40fae194270380a9e83e23328c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHF31205109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79983587a2cffc62e785d307893d255e17e4e335c13701e2716b99728354872f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USHF31205110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4d58d7754a7b4048d04f5413bf28f54aaa620cb0bbcfc1ed301fdb42aa08ab. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHF31408201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a185777e68d56670b8c9720f67ad3f1e659b0c96f6aba5b886537dd6da46e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHF31408203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f34fbb48f9f56a137202d3e68c95ce0288380f1d7158f4411c244883c139baa. 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/USHF31408206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc732e971129129d05d60af6d8e48700883151f405ca02c852b23d8c57132a93d. 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/US3R41630602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a874c80b22e337b1cfee71887bad83ae1a6eeac17f0af36f3243567f5557e3d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/US3R41630604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c14756fe5b4bcf54b49d3448c828f10e304724c1db4987e37b5c7d6d266fb8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US3R41630605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac8fb8f6551ce9990af4ec107b67a4e9b58534f212b4560c161c8668251f4d5. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/US3R41630606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611b004d87b6980c83f8a1cb89d363c32934db7814af4c0789b3485d8f4b4071. 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/US3R41630608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aae73eb29467eb4c53c0acd39b885f6d5d39cd312d1fd0d1072cc25c50355c4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US3R41630610.