Alex Stein may refer to: Alex Stein (comedian) (born 1986), American right-wing YouTube personality and comedian Alex Stein (judge) (born 1957), Israeli jurist and law professor See also Alexan
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 0x69ceb426d4c461e05f72adee6a513763c520eb2ba8f986efdeba08949811cf88. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1591f279-3d3e-4402-b53b-7b62108f8816.json and https://artists.proofprofile.net/proofs/artist/1591f279-3d3e-4402-b53b-7b62108f8816.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 0x851d48b44e035ca9fe698eb35dd512151671e7d78d00c5eedc90253b4b6ed4e0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:58:04Z), 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/GBKQU1741594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8266dbfdc51b4c46092a7cec7bb317415e55847982a1f26960da57490bf3f72a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKQU1870899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00cf4cb14a028393d2030d97bf39183c7088d5e25e7ccb92663bab8ae1e838e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:42Z), 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/GBKQU1870900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8717d7abf16878941d1ae0b6f5fc6af56e0c2ca6f7fe0718328bef997fe4a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEL021802027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8717d7abf16878941d1ae0b6f5fc6af56e0c2ca6f7fe0718328bef997fe4a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEL021802027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebf5d8b8bc61f5434c2ca04730e14c388396d5f0a945c9536aeac7a0640f7b2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEBG51800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e66123c9bd30f54e81fa5f5c3f529bd8bceca0b213faf2b38f269034ef89c6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEBG52100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f848f6b64633935eabb150e50c736cc9f2b61fa758a251a465d0ea463ee313. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:01Z), 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/DEY472375738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd670d847d8116e179076d2a84140eae96e7bb9c7f521337e2a608247f5c406d8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEY472377395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142f7336aee7b074b462edf4f7985b844f51aae662c8f0eb95716ce01a0136d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEBG52200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5ff22343949acfecf93e59680812e7a3b2abf4726b2dc95d0092fa353bb13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2471073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a15ec0d1cad9329adae3f55268fd41fb18b10f4c297f834a93279bf6ab9923. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEH741504008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aadbefebb3b52cb0af10c1ff3a8c845908f800a1a41b7085d51c17b4bded4a. 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/DEL022402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aadbefebb3b52cb0af10c1ff3a8c845908f800a1a41b7085d51c17b4bded4a. 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/DEL022402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5ff22343949acfecf93e59680812e7a3b2abf4726b2dc95d0092fa353bb13. 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/USA2P2471073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024cef4aeb015f0e5db5ec0d7d0fb7e8e78c7f4c780e827056b21c4a64afcfc9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBUR62000718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324bda3f49b22df51f17da76b19fd430383ee0ce802fc11938cf1f3a424df3c7. 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/GBUR62000824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b288ca2fb4f58f0193ea7fdda87423c583c97a8ec220aceffeb0e4467708d9. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEL021802034.
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