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 0xc7b18b15a3b66008b913374eeb20645761cbdef153fef1ca9de768a90b1b17ed. 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/79e2a281-205f-4e43-8534-eaaee8e7cfbe.json and https://artists.proofprofile.net/proofs/artist/79e2a281-205f-4e43-8534-eaaee8e7cfbe.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 0x7408020c9ca89c5c446c3ceb6231d85c7283210697a58a97a8269a274b6ea58a. 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/PLC691400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f336d4aaa37c3d6b08d60313a89d38d91809477001b2fa991fe9f50554fded. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PLC691400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6a94317b44982760a2b090de7520b97ad217d1d26847414724633577da6af2. 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/PLC691400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217a4c2ae8d8badd535ca815c0ea45604a2066777306529929b87a18e7c6794d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:45:00Z), 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/PLC691400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e582b2bfc0d055badaa44cf0ffba34d44e8033f2742c432c30aa9789fd99d9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:36Z), 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/PLC691400006.
Mazureczka (Stylersi Remix - Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f804058920c68869fd70fad78062a3527d7cb0db0c750ad6ee00bc2ae511ae2. 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/PLI360375190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e480392278fc503e0b012d82e530612dbd68fa5f25ada5de8b1595d56c665bb. 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/PLI360375200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96a6c88f7f2776948625ce70bdf5bf8eacf747e8c3649e849122ccb712c969. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PLI360375230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9eaf9a132603bc6e993743211fbefca735934c546087477ce8876d318fe44f. 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/PLI367661340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6056bacb9e54bca32c4d0967b8ad81956ff16186bd7a9b4c260c0d9806bf40b4. 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/PLI361420300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ade784cc3cd35d0bc836aff3e1ee0578bac721b5e0ff92e163d7a7cb8efd2. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/PLI364464610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1301570cb112b944c0f11faa3f7f9f4ccf14834501cb11b845c9e071751c20. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/PLI366959990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c008490c9617c6181a445b85c6cadc12bd9da54a7a67de0655021b4b492e84f. 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/PLI368759210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc273f5a2858f645983531a9c1023e894aaf152670c29e12baabb2ea68bdaa0. 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/PL24B2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae5e770e4891a1615211e9a78003086cd1e24201933b5559bd03926a5988694. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:46Z), 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/PL24B2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef50cfcd94bc04857c34a71e136894dc3513ef82554d1d6975c6e629994974f7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLI362626440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7708d83b782648f0d2278e406f06c0214e3903fdecf66b110e4f2d69de810e18. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLI362626450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3505e9e4c3b680af8ff72a473e03dde1e8aa7b998f54dcb769e653506555413e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:50Z), 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/PLI362626460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebfaf55994f3d329f0008d5ede0cb8384ed02e4290797f0486b73db77bead85. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:54:51Z), 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/PLI362626470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715a86b5592845e3d3db93300f87dd026108360b45b28d0f83d7b0120999a229. 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/PLI362626500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71408cc4473f3d24e4a9b3f872ae66be9807920b707f2d5e97ccb4011af612f. 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/PLI362626510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0970490430e869216ac5139c36971161f7427b8989a464c7dbdfd2b5328269bb. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:32:36Z), 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/PLI362626570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23dc2e9200f46b53927d6689103708437e0bd27b2fb9c6c251094de10a68512. 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/PL24B2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d0002b16d5ac7a296747cc9f498f5034c413c367dd3f15000d63e480af9ba. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:55Z), 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/PL24B2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee777623e4d52417fcdcaddd9fcd2f22a81f765bc12ebb233d97f83173d7aa04. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:18:26Z), 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/PL24B2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c442f328df481a1ce69efe644ed20566c88a6c22fbef9d9eec46cfd12661e3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:02:04Z), 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/PL24B2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96a5c37523fd3fb523fe7c6f5b2756ff97967ace19324403680a412ccd29e5. 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/PL24B2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e99b10bb52a64783a190fdd911833edf01c0b04d139459c7aa49d1347eb7de4. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/PL24B2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc456aa9080b4afc1dccaef650b77511aba420b6c024d21ad9c705bad89a6abe. 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/PL24B2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7e70917cad33b77c86b7c8239fe4a7a2b20e481d73f05662f5f4e36c5bebe7. 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/PL24B2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920adef6834f22abe58817c0ca08b5492370f1b677f44bdebe2d520d6b75a9da. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PL24B2400009.