Sam Buckingham is an Australian singer-songwriter from Byron Bay, Australia. Buckingham has toured alongside iOTA, Abby Dobson, Lior, Kasey Chambers, Felix Riebl, Angus & Julia Stone, Washington and
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 0x896d50497c8521f4f61a775fd372fecca197bee09e779dae544be2abdbbf0c4c. 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/6481d33e-6f09-40bb-8a7d-a5b03a07f9e4.json and https://artists.proofprofile.net/proofs/artist/6481d33e-6f09-40bb-8a7d-a5b03a07f9e4.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 0x333c647db74f4365132c55211c9426c2b4fc272378b144517fb7f9e9707ed426. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUZN01700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804c30ffdfc9d85be58f3f937fdfa9cc8a5dd6dde62a313faec63b40a2819acc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUZN01700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c07e555358574cdc3071106641b01f42a89938c19bd46c95fe1778c51800cbe. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AUZN01800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b01272fe6b8eb2c712cca5da964eb4976b116ec9bb3bca600a920ae664305. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/AU3HK2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fb2fececadbdfadad30a56aba20e6295f983099baa0dfbbc069ae016305340. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/AU3HK2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a02ca5e5993d8528529034d6f88257e2db8a3f060bd41bba49bc29110ef69. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/AU3HK2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44e5e51ff57bc6e2e6d8c64de53e229f120c43b80697ad8503cc75624590e6a. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AU3HK2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8592872c11b00b044f38175444f3082975da0291c62098e488fa0e7abbc5a2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AU3HK2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47501bed8ad1fbd1f47fcb056457290385fddf65a9ca53b830f772a473190f0e. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/AU3HK2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0879597b4c4336e8178e9d389254f10ffaa18d71467700f387f005c4f638f4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/AU3HK2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855807ba18e0e5f3cf3556084320db37bb92c5fe7ae3698b35fb9b350b0639bd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/AU3HK2100010.
Something More (Wednesday Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c73fc41b3849817f5beb4f7766b0c9ee37711c94e6249bc024d5bb4c704313. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYY2549168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd897af3bce7517e0f2750e22d0d3bc169032a43b0eaa8509fe81981a17028. 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/QZHN52573165.
Vending Machine (Wednesday Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370a765fbca81098e77dc96b346ab0ee14b6481153b7cc0cca54905f20f90eb. 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/QT3F22501328.