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 0xdb330eec18ba0bde84d8088478d4848b27681ff1f8e54e0636ae183339f5b7da. 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/f77d7fb5-2345-497f-a552-6bbf70502d44.json and https://artists.proofprofile.net/proofs/artist/f77d7fb5-2345-497f-a552-6bbf70502d44.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 0x580cdf3cd3a76e36bf749a85bb507148c2b0d84fb48293d0c979be9634a0b89b. 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/USX9P0626411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359841274cc2383a9ef872dc945ee284d184dba3787be59b9b67b742e960c57e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USX9P0626412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a03c914cf4bc21bd24ff8a47bb31330526cf0b54a3737d5cdaa212b5fb75f5c. 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/USX9P0626413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa504690b6638eff3a2ba178e9039051ced009c277732d09f0bbcb1108d2070. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USX9P0626414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4e64a58dfec75db07fc48dea8446709312301439e4f834f447c1769f7e6ab. 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/USX9P0626415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3424baf026121e1ce5be6d7c46efc7bb0bddf3efbe9acc57ed8dd3fb2b7a42f. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USX9P0626416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36120c339473838f198ac4de78cff3c24082fef2cb5e46628cbc55bffba518f2. 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/USCGH0937403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576a6368ceddd19c0a1c629efee48132e6740cadc658345ae866ad79d9464e54. 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/USCGH0937404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3dfeec7d03a621789de48cf050f0ae093ed15b5ef72ebdd6bfb91221b05d2a. 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/USCGH0937405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41fa4c0517260abbd265617d21d706a0a8cd0bf74f11f26b52baf7d1971a49f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USCGH0937406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f5c3f538377073b6b6a1a4915a22f9a11159c21d34eec1413ef72d950df5f2. 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/USCGH0937407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc46c7a98fe288bc9f9329f04fc061370cfd4acf3ce1176cb73913847b41475a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USCGH0937408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae59028fcab05806cb7c6da23dd1d17049e6355624f6593e210c3f6a2b3b787. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ1021790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558bdac2425afda894b385d56fb8b83051f1b6348a697d6a01ff6cb63eaaf320. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGJ1021792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3137a8f49c277c4ef048945d3f62fd5fb4cbeb658dfb0d027a1ca2fa9cce02f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGJ1021794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6854c24eaea80e7a19f0530dc04bb495295988ba58d2c637db4467b3db41678. 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/USCGJ1021795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd341940bb2f24d45cf92948cd8c1d93adf8e1951c87e680c1178c3df60074b. 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/USCGJ1021797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78ecd03879b7e4708a3fd3069334521925e4a13f79969214185a804a0fb0f1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATN261244704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ccba7c39f9b77668b9d51623ad19e94abfcf7d499c9491659d928e619ac5dc. 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/ATN261244706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa734f23bd60d8d6c110d1a8cb0b6ff0dd482d14f092a69082876afd454d079dc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATN261244708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aac463fc5588b35fbedd5b51521da4408eb7bea7c35a7e012371cab544dd39. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATN261244709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49d6bb8b21129f648d49dc37f5d095a8abd1c7b3e8aa1a0cfa753809e39f84. 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/ATN261244710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c36db46b056f9ce6b0ee58c531244921fd3cde34ac037df86adf6aedcb8e76. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATN261244712.
Glow11 (Holzner&Kaleun Remix) - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f134790e2a19a1c86c14ddd864e1394bdbb836f561ab29c2e5265f193d0a083. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ATN261244713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e17fe0ba1ca842e496ea131f4e5e06b7efab86cbaad4213eae87f399e9cb48b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATN261559102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf296af6d678dadcfe466664b9a270808aa67dd30f52473a760f407a3f1e35341. 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/ATN261559104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413bc522001550a6e9aeffe33250b2194b8c28064028fd4720c93e2de40df755. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ATN261559106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd220b2d12ba965f502b31fd5fc59d1a571f48d1f13c7b6e74bac32b575dd24. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ATN261559108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd760db1aa3de863bac59ac57682b78e1109ae4614e906b8c258cde3752786e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ATN261559109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc69cdd49ac0adb3339d0598d765a0f8dc4a0117fd3e1c303a07cfcd092dd7a2. 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/ATN261559110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ce77d82c0871e00185451c3454b291b107910cacbca2d12b3be46a52fcb42. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ATN261559111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfecfccc0c044692a25154631c97a0b0243944eade6348db741fb12d2ef55a2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ATN262290006.