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 0x61961244083c93dd0a78673c92cd4d9892188f6b04eadbcb31058b650798de46. 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/3f281151-49d9-4809-b80f-57d70ff1b161.json and https://artists.proofprofile.net/proofs/artist/3f281151-49d9-4809-b80f-57d70ff1b161.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 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 0x499cd9c5b78ff341fc583c34e92e4832a75e0dc5e6d5ae7420c1ebace653e43f. 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/GRW018200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b4596d48c86b6aef40e16e1b4e1779dcb62d418ff35c066dc0ced37fd8373. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GRE019300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23113dbd8367ea6c00edce394e0c34cd0564a7395c919f54a37c67f37f1d247. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GRE018800430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb62e563ee2a452e960a268759eb1c4591eb400369a7c8e51a2ba922067d1e. 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/GRE019300434.
14 Megala Tragoudia - Lakis Papadopoulos (Me Ta Psila Rever)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f6c16b3e0c165d7a0b7d88a7271a18131fc9371f572c8d60c342958f9bf81. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GRL019600538.
30 Hronia Lakis Papadopoulos - Live 2012 Stin Tehnopoli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fb387a844eed0c5a21d21298ae7109557eedfb87ff7788895233f1a31054f0. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/GRE011200391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48369c040f34de43cef579ef390fc2666f48b77934955f298ace8c6c50d042b8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRUM71402198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8dd1c7bab55f405339c17b95a9f31b622427253ede70cd4a9c9ddd697de901. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GRUM71500119.
Lakis Papadopoulos - Live Odio Irodou Attikou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd7ded15d3b250ef5c0dafd1810dd4127daa07d390f69243f3facf22db08f05. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GRUM71601175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdd64cd6d51c8ac65f6eca13adb252ef92b7f500e574427664292073ddd7dc. 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/GRUM71601193.
Pios Na Xeri Sto Vlemma Tou Piso Ti Krivi O Theos Gia Mas
Petaloudes Pou Tha Ftasoun Sto Feggari: The Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3bceedd6ebdbc5feb78c60827ac2e99c84fd5e79c0602f148a3feafe10b94. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GRFM12500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d6a8284eb95fbba450a055261d9b998301f091d769652805be49c528301de1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GRFM12400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5157a783b87f4a41cb53d5837dcdcca4ea08963510416e30a806b819046a16. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GRFM12500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3bceedd6ebdbc5feb78c60827ac2e99c84fd5e79c0602f148a3feafe10b94. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GRFM12500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c0e616eae5345e5d3dc09d4112f05a6b901cb07a672e03756bec29656bd27b. 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/GRFM12500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fce993b9cb8a5b56a77e833ff95bb5568adff137811f5d38ca299948eed82dc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GRFM12400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd274f6d09845fa1f305f9169af0a7156d2ef039b143aa9e49337b5a1f63f26. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GRFM12300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a0977cc971095216ed2816141f622e3eb36a97d3510e451fb183899456a18. 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/GRFM12500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd55218f13ce6b99a1c8d8db235629d7007c0437759cd2c31f0690776a0e3bd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GRFM12500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf780d6cc42f069aa3d7215e520a5affcb87387d208abf73039f208c8b81dd15. 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/GRFM12500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f8855045b04b46d13fb74c09c22091698c076593661ce7dae293ce82e9cd52. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GRFM12500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b4196cc75ed93c28915661b0ab99e0771c2983138678d3001dbd8931b36e8. 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/GRFM12300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44674ba51a0332b9b84f82744a562cab3c831227971e17493bdf52540960aeae. 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/GRFM12500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee91e8c83b06a368d495ab05319432f9c70d208648ecc7a3f9ddd088d5cbe0. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USA561069322.