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 0x84d915e3e56598f8c23556da7f09db2ffb4ec5fc7377919f4c8947637af28424. 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/88a700d4-080b-4481-9ab0-e022a82229fb.json and https://artists.proofprofile.net/proofs/artist/88a700d4-080b-4481-9ab0-e022a82229fb.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 0x215c7dbdabbdb30aab750a7cada6d57682bed243f8b61c2e0414109da6279ec5. 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/GRUM71400589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b40f7ad50da7f0490d002ec15404e30208045fc5ce2b1726721a05ab6016932. 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/GRUM71600750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fcd0800e29ab37d2b18e8038d5dc3998018045ccc6570906a9def32a0090d1. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/GRUM71700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac459888aa1f6ecacb5709e6603ae4593d5b7b3d694887663207983ab68cbd91. 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/GRUM71800969.
Megala Logia (Dj Zafiris Logothetidis Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943777d8c65f65b89262c08e503c0f796669f6c8ab8537018472b3c31ea40be. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GRUM72000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac6525f1e8d90a787c695b3a4955ab197dba2e9eb23d8e6c9e08f1901f618a3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GRUM72300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0ad485da3d122a407416097ed778196eb6decab55a3b58a8b84827d5bfa1a4. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:48Z), 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/GRUM72300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4734bf44bc3a2ef87cce50e035ebe58e7cda9da1b425c0ad8ca2a60018e44a65. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GRUM72300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68406c48fc130cb333214e6e1911cb9b4f1a183281f44e1cbaeac7d10599622c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:48Z), 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/GRUM71401848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4dbbf243a460ffef40e1fe7658fab8a4db1f4c92a52b31e33d1fdc319d3ddd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:03:16Z), 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/GRUM72100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c5a706c4a4e3cba9abbd4bbce8384e1f1a8aa873392b9abce8260dd84dfc8. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GRUM71500923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12fca61f01689bef9c1ab9d599c1c24f25713b38fa24789664c75b8b24ce41. 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/GRUM72300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b40f7ad50da7f0490d002ec15404e30208045fc5ce2b1726721a05ab6016932. 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/GRUM71600750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cfc14b18d44e9dc03b41cc5acfcbf5d34ee17b14174677ae31fd984099c80e. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/GRPT12300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd08973fd8f5b21e71bff57de73e3f87616eabd90314e71bebda3df0fd5ec4. 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/GRPT12300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d08160ed53d2dd5ee2037fcb4f0c9ab71236acd12b8bc4f2eea6b752ae9027. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GRPT12300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae52617a86205e4a64e2bd0c004be96815c2b9a8f389d574e99fcd1f9f3e58. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GRPT12300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c24390af93a34c8fc852d3bb684185a2a47dc583eb765b1192a111f3578791. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/GRPT12300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb6c3fac0d5e7f51d5064f79b89bbee79f577a080b1634057179ab6dd0a66fc. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GRPT12300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ecc10616a88473552170b059e5c7f6cafc865343138cac7721d729ece42987. 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/GRPT12300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622c920247a4d545cfe4e71d35f2e8587860bcaa690b3d5b31839aec77d18195. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GRPT12300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fb3d53d38f4a9749d0f04f3f08aec6486e5d66b4ae214ae7a01b930bdd957c. 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/GRPT12300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbee2023ad7267d84500e2b9b0cef3abc0c2029afd04d4847aa681254df159f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRPT12300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd7944ec688f33d7310a35dd9a15d2b2b4333d33ace41db0223276aa7f218af. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:31Z), 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/GRPT12300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3953cb04b14ffbfba56da58ed0067c671bf587d0d7ebaa66aeaf90431ac75963. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GRPT22500034.
Panik Concert 2023 By Opaponlinegr (Oi Panik Superstars Live Sta Megalytera Hits Tis Hronias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c537b0115e7608f4a6623111ace053810aac1137b224e793b7e05d0008f017. 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/GRPA12300625.