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 0xb59de76c58bdf67c37229eaf53605e08a7572de7b716701aa9e7e97bd431e332. 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/b5b6709b-7c4d-47cf-bfa2-d29ed10a8ae9.json and https://artists.proofprofile.net/proofs/artist/b5b6709b-7c4d-47cf-bfa2-d29ed10a8ae9.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 0x60c3eeca00a2e445366824ad62694a308a4f3cfdf40fb13de8fa4a6bba0891fc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/PLO381500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec8be11c75f71357bdaf8e4bf328f3b0497aaff020696b3b5faea2a43bc579. 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/PLO381500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4764f99a3a5b828dcbb90a561d0ccea9f5e97b93e33742fe19d6c2551bb30cde. 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/PLO381500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c349b0039d23193d7314f6cb6d1ee504286a8be37dca3a3456dccfc2608584. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:22Z), 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/PLO381500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4ee79eca30f48f01014d477cada55348228fcdcdd17793a8252e89c224255. 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/PLO381500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03108109e8a90ac4885b728dfd14873d3fad442a5cde3446114693782d60377. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLO381500606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba58d6620a23253a677c89264bbdc215f1ff066b4e9a036e4ea451cce4b83a4. 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/PLO382200053.
Kosmiczna Dziewczyna (Dance 2 Disco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9fe5f18a85046d1707ea2fe6a2f91bdf2e850dc0ef592d531a3cb0c6f71db2. 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/PLO382200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cd6194187b9671d15de42deecab3516a0961f5efce396cff41d516358a7ccc. 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/PLO382300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353acd6d43497751f1e99bc533738654d389b9186f036d847231a1d9635b4a7f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PLO382300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b78f50b6f3f8e1dfff23a8701514100318c2ca35e71f3fdbc8dda9d9dce85c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLO382300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22e9f7f5e99d1e92dba0883727d73608f7bff969cdb6eb4b825660322ca43bf. 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/PLO382300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c868b84c73b4c982cb0700cd92b4da9d0294dbe174c9aa8aba70377b287985. 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/PLO382300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ff7f1b2864bee2336204f5020594ae88bf9f6bd5e7f06a43625242d5f5ea8. 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/PLO382500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898533775555ae020c3aca564acf3cef51773d3faef51d5b6ebbc155500cf47. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLO382500031.
Wakacje w Madrycie (Dance 2 Disco Remix)
Wakacje w Madrycie - Dance 2 Disco Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7766611ea62448136d7a714c0d5b2e4a423b13978227db20f80ea2d0fded34a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLO382500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9cc4dbc3c478e07bb55638f0da8dcf40daa26a4b123b40a068b9a34617ed6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PLO382500110.