Arthur Leonard "Rusty" Cook (20 April 1913 – 10 October 1991) was an Australian boxer. Cook won Australia's first ever Empire/Commonwealth Games boxing gold medal in the 1934 British Empire Games in L
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 0xf41f8e981f10567a99a190415d829fbf729262875d4701d1907486196c7f70f0. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb5e1e15-5cce-4930-b7a0-976a777c432f.json and https://artists.proofprofile.net/proofs/artist/cb5e1e15-5cce-4930-b7a0-976a777c432f.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 0x3cb711f2beeba408b54c9f2ea9a95113257c9fb09384c1b41b33ea5288b4f8a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITS781800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab8badd50ad77cee8c0444d23ab7109bf093937d1eb5adff5277be2acb1aa4f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITS781800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cfba3a8fac7c98ebe5599d4eb9aa46264287da86dd8a36f76f0bff207e9d95. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ITS781800148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553c7b5e08b2e384230889dbee359d80d1fc2aaaca7a79a7fd30e5c940aa71c4. 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/ITS781900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bff3e636f40b439eb53bf04edf8da885a4fce5d6e42f976368fc343f774bdd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ITS781901170.
No time, No pressure (Piano and Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72552954402e63a9448f3af3a0a385c94d879ffed0e2ec2420fec13b691d83db. 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/ITS782300744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0948ba0c000319dc99d997c395341b5fcbe85c363d474b3a4f662e8e0be3aebf. 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/ITS782300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb99154016deb3b4800bea55b90d63251159f2dfbf4da4754df6cf04cd09b22. 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/ITS782401288.
Profundamente : Musica para Conciliar el Sueño Profundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf5120b6222555fc5669bc03ecf7b0c6c9b86c3838a9f5570b1bcb144f78dea. 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/ITS781800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c844c2005692ca5d1db09de7de32a8c50bc7698a61765a98b02f1a37e7afa1c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ITS781901184.
Study - Focus - Concentration - Best Music for Brain Power (Intense Studying, Study for Exam, No Stress, Memory, Relaxation, Deep Focus, Music for Maximum Concentration, Music for Office, Hom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf550843d5e5b4cc20ad6e32bc5a5c54481f051539dfb4772d77d26cbaf5e9243. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITS781604597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8769185cf8e3700eab7deb165974fdc687df1d4be3171c289c4871c23804b87. 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/ITS781901175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab147f36f0e99c57e22c2d63f900ae1dbd51b81ae38bd98d1f0b551ba77c2f4c. 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/ITS782300393.