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 0x6e37530cba5301029e81161db955a08dc221cb8eb0089dd3c629db6d9e95b15e. 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/bc69f6ee-26b0-41b1-aa50-4f6e025cbfa7.json and https://artists.proofprofile.net/proofs/artist/bc69f6ee-26b0-41b1-aa50-4f6e025cbfa7.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 0x337a0e0c73aab0d0a215dc96490a17b04c7ca59b38624aa0369b7dbce0d16c16. 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/GRS019800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb19a792c6160af7962935cbf913286cd7292488d7202577c4223ca7043fd0c. 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/GRS019800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f941809983fee40873fd2026e87f4a8bb5c190fc9588336703dc376887ebf. 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/GRS019800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c459485d28c4c6a4873827d559239022a9b39c5d1131b421864b4c60102ce34. 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/GRS019800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc9dfe1331adac2629ba0f8efbefe016f56e539ba0dc949c1acd71c497ab5d6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRS019700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afca6a552b8adc68d2a54cf2356c56dd6d383ced36db799e3d225ce4ff7d871. 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/GRS019700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b79fce2fdcfdb1d6c1994ffcf855336ce7c8fd6c72c8198453acf701a7bc434. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/GRS010300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4800d8e856e1a6242577e06b2f297fb1133db1e312ddceda78356a92bed1f166. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GRS010100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7eb5891ef3b4c01942d1e741476620e58e685cf8d4cedeb0cf3d9f55f29960. 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/GRS010100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a9f565dc62e9f4ca2198355d79bf2566f554091287ffa744c5e241c086e7b1. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GRS010100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df38d06261a8f42f6b1b92525dd8386846e2db4e39360627d7d4988a51fb80e. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QMFME1594934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7035b68930d607db46364235554e96f1f8c9cbcb9df3e2de5855d3af889854b. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QMFME1594937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aa9f2dc680ea772d23571f61f3a4fa91e83f79f27f1fc943cc47c6b1bd45b0. 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/QM6MZ2069452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8024e34db998f7d466a280cfb39b0752fcc3e7e749cd4ebbbb2770c3ee0a43c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QM6MZ2069455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b5fa6501c72038d94b3da7517de2e46998949b1193793119d3acd94b6d41f. 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/QM6MZ2088711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de8b253d1732b7148f0e0c02116c0536939880834e1d40741f6a01409fee68f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QM6MZ2069467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507df5014b803dcc4be4877ccb0f67ed442b694b07f8afbb2b37f2e67924a609. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMFME1594782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45a7f4cb8e854a7f686cd0e8e995e549863073ffe3625945eea53ac113a15e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFME1594784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71226bbcee340657731772ad4975eacf5826bf738caf7d79364597beecdd726. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QMFME1594787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cfd86afe14a948a2e379f0538353493259f4613754450299698131574a0ef5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMFME1594788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1cb696834888ed58a8c03ef52471c3fc8e9d1f489997adfd9aedf15fe55655. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6N22099800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a1f7b132553278bffd0f4c9be3321eae862773e6ac2e41bb24b443b51f0b52. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/QM6N22099802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6666e21b06827532168c557ceebc198cc2d015455611f58ad1aecf5285673224. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6P42039151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc30c19df909cb3aa4c158df9e6132a73376d78217eea4a1049c7cf528dc70a. 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/QM6P42072091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dc9c7d135aea54dd1554c4684cf97f8b764e470b67cef5b3c650a9d82bbdb9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAFR2175428.
Spao Ta Rologia (Themis Georgantas Mad Vma Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b0eeba355bdeff219e5460bdecc5416e57ebaf8da447a4db0b5eba8ecb332. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GRHV12200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6db6ac6530c40e5c8c91f6fdc80dabe901434a0777f69590fcad75176987bb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GRHV12200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f9fe9818bfe99d536044729c13e5c36a36e74e0715dbc5e014419492ddf7b4. 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/GRHV12500518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae27d90c38e1dc2586408e8e9cfb00d884f7e32765dce0aa92777a4e54db448. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/AUXL32100322.