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 0xdf90359e95082a12e0c635faa7d7af11dce5a131d67c175f2e9d744482035860. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50726b44-5b82-4e20-b0ff-c2cbc9610357.json and https://artists.proofprofile.net/proofs/artist/50726b44-5b82-4e20-b0ff-c2cbc9610357.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kritiki anthologia - Folk melodies and dances from Crete
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 0x7eef81fec1fada1aa21502a19b464f8ddff54468c2060d242fc22f64261c8022. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GRE018800350.
Cretan songs & dances by Vasilis Skoulas
Hilies Hrises Athivoles / Tou Eroda Ke Tou Kaimou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c6a271f79fc6b46ce73dc52a71488ff52df6d887b0c2da5955d663d39c913. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRLE10700801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f5c9a1562d751232d87f628aa2b4d80c7fe9b6dde96110b910f2ba0068560e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRE018600736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71907c2abb3e9991c666f2338addf2f03696e0a076280c0adce0e941f1934e1d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:59Z), 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/GRM010400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d38accbab53979a775103603a7bedeebc2c8302594bb1e5bac7d19a9a337808. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GRLE10800255.
Drosostalides - 10 Tragoudia Me Mantolino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17f8b2fb2f57c115db1c51204fa16d8190eff3d9c31f02b8f7031a293bb4da2. 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/GRLE10802228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3e636d1e0bdfeea6d6c1d0e03e7dfa83bf38be162326d8cbb47d5538311fc4. 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/GRLE10901837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9a521374096be62266a9006712cc191fe1aaac1f34bf2c77ea766c8fa6e96c. 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/GRLE10901853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17087d34844864daaba7ebc4b6f44485f61a9cf5281a79cb18507850aef85a08. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRLE10901857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b555ae6211e5a10a555f6e98b3202562fcffbfbeb91a522e05abbbc7d83882. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GRLE10901846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a98a3838c471b080336e608276a3193079346aa73e17faf08fb6b3487639ab. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:51Z), 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/GRLE10901847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60876917d43daac9b69ead242204ffe5cee9ee3115977df6d3f3f93926f32b68. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:28:02Z), 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/GRLE10901849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64e92605eec5ec66a16b2cae62253b32b4ccfd393cedd14d0d4c43743c6b3c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:07Z), 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/USA561214872.
Vasilis Skoulas Live concert at Herod Atticus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf4842f730e571d60d400f92d22cdd6da31a1cff2316e42b512bbea2acf4355. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA61813266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728a5ca5ca7f2dd7140835515a01f9e7a2121308df1625e813d62579a2fbb125. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBCKG1700276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98918b523cea1eadeb744fc7f58f58c4c63a84988bec99fa8b77f4c0955dfb1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBCKG1700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3719b8f2592db083f1fd4d8e08c13bd58a29c7d74956f18eb55a208783638f9c. 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/GRFM12000936.
Ta Antitheta (Original Tv Series "Sasmos" Soundtrack)
Keri Anameno (Original Tv Series "Sasmos" Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70edcc73efce6174f7d8267b70b97bd0b221d1e9cf20938f01e0f47fdf133e53. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRFM12400166.
Se Poia Zoi Na Piasto (Original Tv Series "Sasmos" Soundtrack)
Se Poia Zoi Na Piasto - Original Tv Series "Sasmos" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5784fa9a8b120c4dfe0619d9fcbc91533e53a2ed510e299815ac651c9cefb5a8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:34Z), 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/GRPA12400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77abc8f3a1f28dde943e569e43df69b755af2935823c6fbbd42e49de3ccf6378. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GROG12500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4228eb7c9f179248f708899965aac142ae19594e5cc2d0d1198dafa7b82278d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GROG12500144.