Sam Tucker (1895–1973) was a rugby union international who represented England from 1922 to 1931.Sam Tucker Profile on scrum.com He also captained his country. Early life Sam Tucker was born on 1 Jun
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65708594c34c61e9cf4393521e91308fcbd44f0834ade6de60a278f7c9cc6217. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc8e5146-8f5c-479c-b758-383fb8980fb8.json and https://artists.proofprofile.net/proofs/artist/bc8e5146-8f5c-479c-b758-383fb8980fb8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f597fef4ac463aa10fac7849c8d3576169679f10ec32c863a2426eaf0c0711. 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/CAA502045904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e12aeed88521496369df064c30c64491e6c50728072a65e7ca5f54c1c5991d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:32Z), 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/CAA502045913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c5800393f585fae4a69f1ae17def30af0d4eb3d8ac77dd11bdbcec185eed38. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CAA502045901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52327241ecbcac088f9b5a550e1c5578617d216ba483eeefae809111e4118f7b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CAA502045910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352710e821968575eaaffbf234f9a99c76b03641ef6460863018afd00a0b677d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CAA502045914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4534a12ad166b506432e9da0d3337002d8da4b66bd77ccfa8d59e7a5a79daa9e. 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/CAA502248504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5ca09f84425a8edc8aa4eeb95f82da705de2fc05b505884b73e7f5d4bec78a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CAA502248501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b566de233944170d1393f588fbfb3c9ab32a0cfe1a8dcf74eff77ed710d1127. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CAA502248503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57987d2318abf28d9d3a91a8fc1a952e58dfc16a3fca25f19bc4af669d087cd0. 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/CAA501840900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a67839c8c8ab11da0d68a1036942db1e601eb234f9477ed75d55a3433a34ff. 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/CAA501840902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e58dff8e24159ede33d5886021d062704df3b5e1d518f1e27a6b8b7f621c96. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAA501840904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e56a02fdd11b2ef470adfca3d1a32e5f9124575097630f93aa8a722c6803e7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CAA501840903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d584b5cd3deed624df81ea67764ad7f092cb8a698300ace64d5cf0ca2e9524. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/CAA501840901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf2ced6bbee606da15b3ada8d3d17fbc9e6ce7d5139463a0de868f2277d02c2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CAA501840905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacca63481c6e9111d29dfc90af4c9bb3e8b97a3b6bca0185711f215ca2cd9603. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAQ661786002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ec220c87c52e421c6213fd2969ec38d582a0926de79faecc204f33cd8f4a7. 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/CAQ661786003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4cfee8c2158f1d4ce7a7c74d3b0c66ce7d038af51acbd1abfcd9ca2774f520. 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/CAQ661786004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67056a0906284670a618753c6ee2064e533469172d71cf281808fdf52d106437. 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/CAQ661786007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7b1ee47d22a080d5deab648296c08802e3ac08a77b100792ca39fd27fea81. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:03:31Z), 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/CAQ661786008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15628ba6f1f62b150a00d37724e91f80aabf4b5cb029087daae6dd7a9e12296. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAQ661786010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75723fc8e56211e2b8586529bd01f91aebf1900f4d799be84f31c4bc5fcba1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAQ661786015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd995edd3d5c8f1e4bf0b501b289a1e86b614ddbe1b27d0fc3c6a17bdd28201b. 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/CAQ661786016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06fcabcbc1e6f37cc254cd4a1153656048614259cbac1215da6346374a9f0c. 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/CAQ661786018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee0f391d42e301eeba713002e08803f83e5886c1988e0327929acad2551a06b. 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/CAQ661786023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004944c9e4d94b9344123c19f9ce20072643a6aed668edb3dc34e90ae452c4d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU31501929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5097e581f1800bd66b7f7e60fbaee98bedcca42506b64d67d29ed2c089e5b2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU31501930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959b797000ba80640a3b231f359508bd7e83e6d75c4e536d32dd16627ec55e24. 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/QMEU31501931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904e8001edbd9a44a5cc05720bd82d2d13a2fe87265a5a1ff7c5f9f75910d74. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BEN581500182.