Sam Cross (born 26 August 1992) is a Welsh rugby union player who plays for Tarbes in the Nationale competition. He previously played for Wales national team and the Wales Sevens team. Personal life
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 0xfd4b54529f4479a35957382642415bf419e2518651d85ccb1613e784e2c29436. 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/bfb98fa8-78c1-4235-a3a8-b5c08503e6f0.json and https://artists.proofprofile.net/proofs/artist/bfb98fa8-78c1-4235-a3a8-b5c08503e6f0.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 0x77a623b43d981c44fad40ba72ffd05e1122c610c6451a7a51d5003f7a27a4ce1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:44:48Z), 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/USANG2180395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061413eee72fa61af2f2b4025246b217db051fe543f6f03924a636d0fcdfef85. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES72152596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaac6d4786148afc76219e77b0dfd9d2d61b70ddeb7caa4460a54615042a67d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM3DF2135134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadd68169f4bd98c21ca118c0cd399507d5e1c5e13218a738542ced55199d627. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:32:01Z), 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/US3DF2219781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83260c637d6bc10741917c0f508ecc8e4caedd4d5552f0a9c528febab9c7d0b. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US3DF2240050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d4e399e5ea90a7641b0a35b96ff211db2f1c926da3bde9bb56df9527039ddd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:24:03Z), 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/US3DF2240051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2ab0531e0cdd776c76f73cbdb5d6da2a40c8a71606ce4b143d0be559db136f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US3DF2274319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779f8b3b440973e622363f61e66d8049f816bc3b469768c45dcc356861eb9a27. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USANG2212990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1985b8365a2ca46642830e6aee5cde3f6a359efa27a4e15539dcb62c984c5f7. 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/UKZGC2203268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0623b7301a4d7b10bc237d6cd430283ced46d67f6ef32c82c3a7b578914ebdcd. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USANG2241834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb01bfefa9dba8328285f7cf65d6c2adbee7dccb21e97c609a727296c81e5df6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QM3DF2243805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326110cc2a0cc7db4ce94990ffb8aab85e3e94713b7644eb4f7bf2322d4f411c. 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/US3DF2441796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b3e604f81e3fa49251fbed62e9928cf4989d0b235de50df453aaf38301e083. 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/US3DF2155524.