thumb|200px|1921 photo of a shepherd with a trâmbiță, in Giulești (Maramureș). thumb|300px|A mural in Voroneț Monastery showing an angel playing a bucium at the onset of the Last Judgement. thumb | r
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 0x6e6095297a3f426b3c89caa181c7ac8dd4c5896490be7173abafa99f9f88ce4e. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ada7c355-2e24-401b-8fe9-078b88ed95d9.json and https://artists.proofprofile.net/proofs/artist/ada7c355-2e24-401b-8fe9-078b88ed95d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Back To Life - A Tribute To Goodbye To Gravity
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 0x9d3fb6793245d73e33e5cb6862c378384f00f25d4c1c01e17c3fa6d3535757b8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ROUM71600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ad8b6ce9f9638d8f50f1b7f305814fcaa78bbbdf86ece18f1f37f4364e9bd4. 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/ROUM71600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdbbfe55dc28af25444dc4d81047cf8d1af5236fc4bd1059875093ce5c5405b. 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/ROUM71600175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f2364fae3db7a65aa75c04e2d1ad6f20c66baa5fb3b23954bd26b97221f018. 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/ROAAR2000050.
Fata din grădina de aur / The Maiden in the Golden Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698cd9a81d88b1e6632766a89c0efa8c359902ff9e5c4a5aeaafc11374e058d. 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/ROAAR2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ca47f3c7085c9a737c36057ca1ac42b51259d03f111bbca466a65e14b1228. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ROAAR2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e530bc5f49ca1aeaff0ca03f25a238352309687cb77c13137c61fae5db26bb0. 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/ROAAR2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791277b64e1b33bc7a3efd5ed2e28179cb1cf893f919b74c7d4855a0b0f97560. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ROAAR2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a6be470b5d6b170d049eabe335620d353f694e5616a7b5325c6c4b0c08b391. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ROAAR2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e7f621c1f1c8a93544f762436bc0fc1069450688366a7ec5efa78b6cf0b1f1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ROAAR2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb6f60a620203634c34db04c131cadc634b115d8af0dcbf2b1c242c32fdccf2. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ROAAR1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f51677214dd3e3aab9a867678ef642e6ad27700bf78a8a87c2efe3449393e5. 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/ROAAR1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258813277d8064c3b6ffd56f48d4bf78b93692be8192437289c52bfcc8f89ff. 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/ROAAR1700010.
Frunză Verde Foi Mărunte (feat. Dora Gaitanovici)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab3ae34c3ba706514dc3b896ce44c4151359680f0f7e7efbd4233b3511a9465. 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/ROAAR1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693b379b68413731bac44b1e6af642677a0a0fe8cf46423a34e301ee3c2d9132. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ROAAR1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4516fc97f54cb908d0b6694aa0d94c487ff18226c5191e5dd467ef3f9ad26d8. 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/ROAAR1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a13492c0a12b3d6712f2f4a50bbc78d5c1536f96c87cc4c65a4443f35c30b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ROAAR1700020.
Bucium: (Live in Codrul Ascuns / Live in the Hidden Woods)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a79f8c4aeb5838c1f4fbbaa3ef96246a8115fdb3c39df3b53e30e57b9634b. 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/ROAAR1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fc6d9c04ede3780effa76354e5ff21d421a7869c379c4f06693deaff2afc8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ROAAR1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a2e8859dbe2aa371c012b30ab06a5d4710babfefaa48b6af970734a3508bc9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6F2360132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672adccf26d420834fcef6033d61edfe92ecc149277b77c14ffd9aebdb5aea6b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ROAAR2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00b7d11fa19b605f45ea0a506b3aad2bb0895049e0dd2b78a82d67f991ab514. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNWT2163030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6368170e5b903323eb4c57450e2f5c626cd9bf016b43b377b9b90eda48a3f5ff. 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/ROAAR1700031.
Frunza Verde Foi Marunte (feat. Dora Gaitanovici)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab3ae34c3ba706514dc3b896ce44c4151359680f0f7e7efbd4233b3511a9465. 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/ROAAR1700011.