Lobby Music is a record company, headquartered in Paleo Faliro, Greece, founded in 2010 by composer Nektarios Bitros. The record company has released several songs from notable artists of the Greek mu
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 0xed34befbddf224a4f172d8be3d63a611e9bdadfcb4683b9ee96ab09b2dffd61e. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6014791a-6f84-401b-b9c2-896a8d390774.json and https://artists.proofprofile.net/proofs/artist/6014791a-6f84-401b-b9c2-896a8d390774.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 0xd00ec0ee1571cdf4cc30c519365af5ebc905090bef9a54c3db21078ad24076a8. 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/BGA471916062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73cac2a1680ce1df61acd21c812c9dbb5a11e456168f70c4eee937277ce3a4a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:18Z), 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/BGA471916063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dde2f7c72f45d70e688b00f70251eb16d63a31ffe518a9861a640b01f69f95. 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/BGA471916065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d8d7ceb6f011251302b984efd5c568bcffa8d80922a440544a89a0104efad8. 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/BGA471916066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba9ce876c2de6267c30e25badc606e5bd0cc6f367c9dcc85507c42cb4f89c9e. 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/BGA471916067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b0992eba79a157a4153b2f11cb12ebe92da08414411ff14f5b13440319c535. 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/BGA471916068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7722d8d73ad4b3d0741b383ed3f9fee15c00c1d7b2274108f466cecba60d01. 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/BGA471916069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b6435da9021f3e02a76fe6e771a98f51c1b7211eb275afe9bff2b9f1fcfe0. 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/BGA471916070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5d205413290c813e51506a1cb2269d7962be2ca81a488756c9261849c2400b. 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/BGA471916071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61147f05175728d11a3a284803b4cb4d1b904d3f03ad76e4429472a005a545b8. 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/BGA471916072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d4ac5d40e51e79e515677c86a27aefa6f6fbafc22db7597d3ea8f4176d8663. 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/BGA471916073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e90ff967027023638abca32a0260ad91dcad7692a91aa6305d5ae3efa6c4742. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BGA471916077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb482fe73c994705165882037d0ec413106b4be51a47a82f7067efef3ff6c6cc7. 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/BGA471916079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c059f7cc65f4863b0127a69b6855830f8c2ac13fb2da33a85853b7d16d9cd43. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BGA471916080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18826bd395eb380423228b7cb4e60c0308a0cc7fc3a791ec5c8f40863b710dc3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BGA471916075.
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 0x5eb86312817f3e0c4d3a5ab2c7f991f9de1c565d58b6aea477064d1ce0a4df85. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:13Z), 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/BGA471916078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7a685f768660a4ceb6cafa1d99a9fa9aa23ebada8f1b2e816622a0392f8840. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BGA471916064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995b9dafaec1cfdb35bc1b08f27978f45037a56bb56ca19097ba493399fcedf9. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/BGA471916074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7dfcb606e3980b4f4318973b5c708dd8962d1b0405f21e9b96ecb2a12a04d7. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/BGA471916076.