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 0x47910ef16deac6e622b8bbc1d8941304126361fbdb859239d8e19cce2243fc25. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2119f5f-117a-4de3-b077-ad7c961ced78.json and https://artists.proofprofile.net/proofs/artist/b2119f5f-117a-4de3-b077-ad7c961ced78.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 0xd6a6610966144e0edb4cf0ca2bc7c8ab1d6e4f4ea97f79192ea9f2073e35ce6c. 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/QZFYZ1952070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f626a82a0c3783a4b2eec440b76b642d9c8e4b13233cdf6aacd993e335cec87. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ1952071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa544c77b91875dd29d9c414daa1042a07ff659dda284d43df8aec9183fb23b72. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES62015015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4965768a8a3efc0b6ec46866b1051609b1a04125eff74390c5fe99e1e8069a7b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN31963128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707e9740cbcd252940181f9cf678923537c23eda8cdca8351a470425200b355. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:48:08Z), 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/QZFZ72079212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57d965c66e66c6544e3830d442b98cf69fdc60824a1fc5c1a04c4e3dc374ad5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZES62075130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97c3c525f08d7ca28deda37468163a0e338958735593ed4b07c90bddc35040c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:33Z), 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/QZES62082261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3abf0d692ae5d62a2be459967a3bb775722ebcb8a22947a22f8a133848c7ea0. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZFZ42191000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73dda8674eebbe4473a68a73fff04fc24cbbd1f7a12553c3a2bc49f4e997ce1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6M2396616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ab1420c4ecd3143d75b4b6704e59a8a3c2aca91db0e57f81f6601468197034. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6M2396621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e8a7aa9dadaec584728ff7df3f3da57a52d8c6f24c980a7f761ca85bf434b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6M2396622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9d29dbb7fbf95b8a59578fa88824eaac76e9a1107aa70f8cf4cf3b87fcba92. 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/QZK6M2396623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2622cd4b6ab450125680daa198769c569b2a8488fb0b586587c35ffee69eef. 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/QZK6M2396624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe424aaf22420a964a15b8de7daa53f0a545fbcb141384b3cb6b7eb14093b137f. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:49:43Z), 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/QZK6M2396626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806aee63b36960939a6854461ff67900db2e7d6c81ca1ae418909ec42a72084a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZTBB2366360.
ΣΤΟ ΝΤΟΠΟ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe84f740d986abc39f86690cb959a2cb420c2f3a5cd2a5e835bb5159877f256. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:20:53Z), 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/QZES92566406.
ΑΦΙΕΡΩΜΕΝΟ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273439e51965a711c282d0e80d8578f0f9936478d57a63cfda2d10201bd4b370. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZES92566407.
ΑΚΡΟΑΣΗ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97972122135648932421293187fddb6db44901b9bd1e1c163fb20bb583df5892. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:20:03Z), 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/QZES92566408.
ΠΡΟΚΑΘΟΡΙΣΜΕΝΟ - ΝΑ ΧΑ ΤΗ ΔΥΝΑΜΗ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7476bdadf2f075b3b22173d23737b53d5600c08d3ae56b633d781fcfa3a163e9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:34Z), 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/QZES92566409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690e426a4911bc65f476b8276c2b131a75eb2f4afeeda9f2816f6de31f95cf19. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZES92566410.
ΕΙΜΑΙ ΑΠ΄ΤΑ ΠΑΙΔΙΑ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae0cb4ea73267fe25776a9f0183aa51c248d816d866f8fa1e0bea3f7888cb28. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:20:48Z), 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/QZES92566411.
ΑΘΗΝΑ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1101c06c65f6bee1bd26cca45b8ffe029574cff72faa1836c83b0193a7b41. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES92566413.
ΤΟΥ ΚΟΣΜΟΥ ΟΙ ΛΑΟΙ (Zωντανά στην Τεχνόπολη 2023-2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cfbeff9ec6058064e7ca936805ffe9c73afff2a0f5bf0f14d27ede4b9b4ff8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZES92566414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d3a687782675ba3d354b311d8ff0e3aabbf876d382884fb8cc3e10127d2acb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6G2542431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090ba37e53912ffb0b938c7b5237950f5bf2a69b9b81e65c9fc186691f3525a2. 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/QZK6G2542432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b4bdbd488f1e097e80b2e80d7bc3b9bcabf3c3d377d57fb17f8e86039c09c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6G2542433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebf317bd4d25ce8822be343f9ef6a9118b177690cbbe8871743f1d9461545cd. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6G2542434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df67ca02b9c96fa07f8991aaf49c852b63e3d5b872f67c2aebc86c66ff7b489. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6G2542435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2150ecfe3033a195d6969fd06542f7d09cbe233d06e14eb7afad3c0109e6f5. 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/QZK6G2542436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba5790b1e8087af0d072e7dee4b09246226df800e0d15dc34117b52b69209e3. 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/QZK6G2542437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2639c3abfc5e7de3ff60b3ed6ba4353ffae230a8fe724f7a9eb975860780118d. 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/QZK6G2542438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45854c30cbb1444b78db82298ce0580786cfda4d3ba0f174a0f086dc433f99e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:48:50Z), 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/QZK6G2542439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c4be16021fc89bab27d43ff6a2bf6428fff2325698ae3b706fb567a7e2b7b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZK6G2542440.