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 0x930f2261b66578cd954961387bbd72c8582ab37dbcff5f225e1cc6beb9eb3746. 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/dcdf6e30-7021-4b81-9a03-edb9133faa89.json and https://artists.proofprofile.net/proofs/artist/dcdf6e30-7021-4b81-9a03-edb9133faa89.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 0xe63a91e9f9e48174b1d59893f39108805b9de195acead0c85035771b74b7b09b. 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/GBCKG0500501.
Michalis Terzis: Music of the Greek Islands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ab92e21a1265f7ee2b9336d85be61b458ffeb28be9dc28b68d44eef2486a8d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:54Z), 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/GBCKG0502074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b8ef9010ee52c396c5aba340c145370eb350076ec93b5f54c366f7ac662cf. 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/GBCKG0502079.
O Psyllos (Original Motion Picture Soundtrack)
To Zeibekiko tou Kapetan Michali (Captain Michalis' Zeibekiko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb3e02640272796fc6e93915ec1cf47b5e446b8e982b4f38e89ba42ffb8014. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBCKG0600405.
Pezondas me tin skia moy II (Playing with my shadow II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229208565702584febcf9f7af09ec119d3e60bac947da5bcaf3e83dd54e8c48e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GBCKG0600410.
Hellenikos kinimatografos toy 70 (Greek Cinema 70's)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e89e61fb456efd25d88cbd4fe5e25daddf3e7f2d3c78f782ca75be935cbe93. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBCKG0600414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4961ceace03e793855d81c6f483882dddb411b68efcdced1c4b751385fb1eef. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBCKG0600416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b6359a310c59fc30a51c640926b35af1904da6227a786a4a56bec7f64efc4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USA371448756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6802a971b6dd93a471dd3aec315ccc36b83b622c39ad1e0e6e2028d39887916. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBCKG0500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cfd07dec033c62b0181ce88504750af563b16707072b4adfa228c5d2054dd0. 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/GBCKG0500404.
Magic of the Greek Bouzouki: Near the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda00ad6f7550faca7832d0d39c5c3f688e117a179569a6febe3e82bff048797f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:50Z), 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/GBCKG0700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e873079898788504cab68f3b815a23f9c3c360420cee226cca8a7c51c8bbc65. 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/GBCKG0700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f84fb039c92a1c34dfcb9dd47bd28dc741ec2fb1a87a788d0e9cc7011a95030. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBCKG0700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e873079898788504cab68f3b815a23f9c3c360420cee226cca8a7c51c8bbc65. 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/GBCKG0700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f84fb039c92a1c34dfcb9dd47bd28dc741ec2fb1a87a788d0e9cc7011a95030. 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/GBCKG0700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8454edf84f31c71ead852f2591354b71d6b859f30e995e64b49e63f5e590d35e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBCKG0700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5115c346b78b17ff71cc574b332a31eff5288184af50bf538f10ab7998e481. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBCKG0700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d7e78c6ee1c347e52cbfe03512a96f4a6d6c7db99877438e83ec72c722408. 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/GBCKG0700151.
The Spirit of Athens: Greek Songs by Michalis Terzis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d00f386b809ec098811b87c5a716ea6d550799ed476a30c774f2b3fe280ee2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBCKG0701400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8d8bc26f608e55978e756625cd566bc8034f4e3ea733e7887e469cebee4392. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBCKG0701410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7764d7d158d8c3dadeab0921e9af19d448530d3ecb56491636ec2826290a3c1. 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/GBCKG1200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4b45f2c5d09fca0c458c048b85d77cf5fd4f7b06ea48dd1889e32988e86ab. 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/GBCKG1200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7764d7d158d8c3dadeab0921e9af19d448530d3ecb56491636ec2826290a3c1. 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/GBCKG1200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c4b45f2c5d09fca0c458c048b85d77cf5fd4f7b06ea48dd1889e32988e86ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBCKG1200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581a4c25e9ece00ecc035b664c7e64563469ad3cbb26291134008659b65bfcc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USB8U1038613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf26acb57dd0e53a67b195283866a3e05c473752ebf4e0996f2d79f227da579. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:02:26Z), 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/GBCKG1200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5526acffeb877c3b9b2919ad2b8d6538ace8c6a09c2ae7621f236034371c9a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GRE018400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5526acffeb877c3b9b2919ad2b8d6538ace8c6a09c2ae7621f236034371c9a. 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/GRE018400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c59cf70963c803cf715dde8289b4a2cd860eff820ee8a9327c3fe8a1fd268. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:55:32Z), 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/USB8U1038610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b8f6013ad05445e987b09717546d1b6f4de5ad25672a86fb9a7936711e126b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USB8U1038611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a772690da476ddb0474aab91e07997264411457fdf6ebfd3804a5ee62ca15b. 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/USB8U1038612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b7468ed65bd9283e5ec271af34a7678418fd17297cd193df07f76ec719b452. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GRE017600691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581a4c25e9ece00ecc035b664c7e64563469ad3cbb26291134008659b65bfcc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USB8U1038613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496918b7f964acaac7b971eac70afdd5faf15017ba24348dcb302458fb09506e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBCKG0800958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e86de3c7e2b5d87774246b77d81e79bb27a7adabf1281846aabdd7e668cc762. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:04:00Z), 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/GBCKG0700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6455ac47f66329ae840eb152380f5585004618242ba977f75a5d8d6b6f5a1e16. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:56:39Z), 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/GBCKG0700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50073a28112ae94977ef8c17914fea0df0961df55a9205c1237813414033f9f. 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/GBCKG0700158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9bdac113685191ee72d793179ff982808c342360fb051f25a652b49b66b86. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:07Z), 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/GBCKG0501079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf498b2893ea0ef77244d2e8d7a83877471f9fb6fb8cc398a445a57c89c872c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:46:56Z), 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/GBCKG1900094.
Michalis Terzis Stratigou Makrygianni Logos Istorikos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf01ec3474369bec3fd3eb0071846aafa73763d282c2071dfae7482185a0a13e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:20:58Z), 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/GRFM12200505.
The Elegies Of Rebetico -17 Studies for Piano - Opus 27