Rubin is both a surname and a given name. Rubins is a Latvian-language name. It derives from the biblical name Reuben as a Jewish name. The choice is also influenced by the word rubin meaning "ruby,"
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 0xeae3e6424ef085da6e2584e035bbbc43a622038e16762b76bb29ae91d8fd9ada. 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/4696ca38-9102-4934-949d-29995c79c1e4.json and https://artists.proofprofile.net/proofs/artist/4696ca38-9102-4934-949d-29995c79c1e4.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 0xc91386ff7c4ed5a600a56d90bc47cddb6cbf8c5e784cab089e98fbd94cc6a2ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2387270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbbc4e8b48fae929f9630b493a371d1a430ae25e0e2bdca7fc0235069f7c5c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9L2319299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5faaf26295a5bdc056617542fe5e5f215cb02fdb27017468f570c405fbdf8ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES64E2302275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeffc7227ce1b589ea8832c429d96e3e2da9529ea03ef10def38e59aa676526. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2328844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412d74a26cff4d0e0b3d15fadc4515b255b1f9f43a17aa1a02413b523925b921. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2342689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6cf9d4b89f16245bcb9e06f25a6ed4979df7b2d6b3062ca0a4037ab7d52024. 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/USA2P2338333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369678cd372a69bb78d1268d1f61e787c7ee7f8967474718888cb74660766190. 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/USA2P2329855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65d6a453db37716e322b847d5e589e4c3a1f11cf583af1f5ee020adf4c7c49. 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/SE6XW2205592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3323953352dda2fde42199f5f30c4aa6bdd8546050db589c653dc6fb3f34bfa0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2374917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85785b9f13234e4e8ed21db1e11c762968c4ea795e3a0cfdc6cc3818d643319d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES64E2205298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c75e2d4b2bb3f61621d4824b5a92fcc7aebcfa02b6830aaeadef5aa8cbc023f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6XY2223722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae527a2699021a37c74432cb06e8b3d3752341ffa013293c927482b7762c1e3. 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/SE6HN2277910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c428603030c736442deb65aae743872180d00bfa3479ac29ed8a38fc7222f0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6I32034964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8fd4a4da15b9f40cd75f4448353466e3836906664a782b0936d506b07666d5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5BU1919429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64657835d48a739376262e6ec5079998f66ba98f5d2a5f114761d577db56df21. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES71G2412258.
Entre papeles y tinta (Suena a reggae), Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37518d6a011eb0870aae016a6e2652ca2da8406edeeaf82bf38eeddab0fb3bb8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA72420397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff75031f0db454c2a828ddd813eaf258aaf72f543414a5f8506fc3ecb5c51fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2410745.