Dennis Alexander (1935—2011) was an English footballer who played as an inside forward. Alexander started his career at Nottingham Forest, progressing from the youth team before making his first team
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 0x89c11d7f134a3bf2d614ed1ddcdbefa6d94060af30d3c9fd03951431648e2c31. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e641a7c-3dfe-4936-87c0-a83e8f2af2a7.json and https://artists.proofprofile.net/proofs/artist/4e641a7c-3dfe-4936-87c0-a83e8f2af2a7.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 0x820fa8aa4b3121228584d1601ad83bc58689f6fbcec282be1465b9beb6871fc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUFFF1700156.
Grade 5 Piano Pieces & Exercises for Trinity College London Exams 2018-2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289fc8b52389dabe38cc40cc2134cdbd9117ffb3e731c8f82fcf10ec1d0621a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH6541944157.
Heiland Als Een Herder, Leid Ons: Heiland Als Een Herder, Leid Ons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfb02a513acb8c53318af5d8b1d53cf2d5b35fb1e1d881f21b7597fc5b54291. 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/NLL6R1900647.
Stilte Over Alle Landen: Stilte Over Alle Landen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38c5a83fc4ecc9ed660e505994af53a9e7cd83a2691be939c6dde8a12685f5. 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/NLL6R1900652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bd0b57fcc5d25a097a39759da41c959e3c06a78eff2d328b4175a26edb098f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLL6R1900653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc708ae4484026ec8ac7dd6daa23509b6df1abb8039c53478167ef36556e90532. 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/NLL6R1900657.