Lastlings are an Australian electronic pop band from Gold Coast, Queensland made up of brother and sister duo Amy and Josh Dowdle. They have performed at Coachella, Spilt Milk, Splendour in the Grass,
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 0xb74d64dd612c48ff0eaf72a0a7a36ab4e8ad2effd158696bd7fd92f12faa7b4a. 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/9f8f30f6-3591-4b76-bd81-155b7e6f98b3.json and https://artists.proofprofile.net/proofs/artist/9f8f30f6-3591-4b76-bd81-155b7e6f98b3.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 0xa6855749b11bcc847480ecd56b99f20f90e48931100ac61177b691c21663dd66. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed41d470ad75ccc8a33c8f05f54ac142438d63b7290b173894967a389ad5e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72004260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedeb04d7c122419cc876b9c22a10d77c9a065948abf5d544289996a48ab2a24. 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/USRE11900315.
Get What You Want - Vintage Culture Remix
Get What You Want (Vintage Culture Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57934d5f0e4d7590145fc89617f132ab517eac58a3a7eda3254519f46812cb31. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2219253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6f8eee7510bb3f5312325643918eb6328c63fe20829e61464a52d64762509. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12002678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14d1afcecc8f9ad35bf0416ec784e262880c84d7f66724cc26540d79fc97a93. 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/USUG12002679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedeb04d7c122419cc876b9c22a10d77c9a065948abf5d544289996a48ab2a24. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USRE11900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310896b28506c4ebab87106d66f1e0034ef526986ef98748d9540ac3a1a7e240. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBUM71903987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1305ef1ff6d81f7e37811a6a6335d858469c8435b67241665c7989cbf9d19e70. 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/USUG12001280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13690493bb13bd97ebddf4ac9d05040c2bb3bf3bf077e9f30165c52795d076db. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW1970785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f323a0785565d1527328c0f220a48ef028739db1192f18ac155f465372dcec7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N21977683.
Take My Hand - Totally Enormous Extinct Dinosaurs Sky Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b888b303e88a30b3b28905b5012fa1d7960aa4092b751b8a3448aa7393781e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AULI02030800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3d252b5f76a2182d4a2661bdce233db2834e7664c3ff225bbb95e60d6d5605. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ91928362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87de814796e0ee07264a3877e25a04057f6744d9721d1bede1280585de2b4dbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUG12101372.