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 0x6a43f4ece5f69f5ae43841afbe16aa9036998aa5b714dcce2c5f7f0634e2e819. 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/34c2064f-6083-48fe-8135-ef8592dd18e7.json and https://artists.proofprofile.net/proofs/artist/34c2064f-6083-48fe-8135-ef8592dd18e7.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 0xc1c02681a7910ba4ffeba7f24e08fb30836a84fefe7d8b22ba9bd2a8ac136af8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLH511200277.
Robimy Hity feat. donGURALesko, Shellerini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d40d2f287682ce6e3ce938a2f8dca36432fca75687b884ff6cabae0c33be54. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLH511200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6938267be0e3f973460affe766eb574b31c7af4ca6681fc93c5c6cd24440081. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLH511200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c02681a7910ba4ffeba7f24e08fb30836a84fefe7d8b22ba9bd2a8ac136af8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLH511200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd198d9b02ebaccf6eb4ea5b9c1dd554958a199ca10379ff27dabb58ccd44b915. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLH511200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d40d2f287682ce6e3ce938a2f8dca36432fca75687b884ff6cabae0c33be54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLH511200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aa8e99ba38210cdae4935852d446e4f3ddbb98b7cce95bd331a55fe4201857. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLH511200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d108371dee9b79fd0edfe2e791456b526412c9e888893332bf0773dde98427. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLH511200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8cc8a42d49b9f3b8103031117064982c0c83bf37134b885b9e53d3abb8b046. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLH511200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527b59ea0338a2aba75054038d710d2131c3f365334caf824370173382d114dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLH511200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4bde7fff922476ebc5b24350449a8d223dc6bdfd557b94369e4f185c4b2395. 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/PLF242107778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f4f22b4d81a0ec689a0f291b6851ec2d1b71d6f4d11eec7052dcca0b80a311. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLF242107782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3c380d2ec7765f353b1f20c606d8d874984646ff59f5fa68480f719060a80c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLF242107784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0582e2936bd198c5caa2295b07fa0155e06e903fa79f580d9df9c1efa0576. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLF242107792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c09b069c8a25d131abb1a5a36dcd559563b24cce0dcf4b9c4b3a37b2af51ed6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLF242107798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d436bf7511872c9f11a41ba5d64a01db2f9a1c33f4e3ddd892f6353b76b1226. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLF242107804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367f46e388127b1fea9936354f6fa3a9697ad4b064cf899c1df3ab8283cc64fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF242107805.
Westside Story (feat. Młody Pavko, Don Tomalone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d2def00a4d297d4808b066158d5e9e159f5d957d278afe9fd66c1073468fd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLF242108258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe078de16bb48abbf5e9bc5018c2e420746f0e982c2a9bd48764ed9990560ffdc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLF242108260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a91072d54c67df2591323ba793f442c163bff49ae809e164095cce1b945fe3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLF242107877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab53f6dbb820ffe494fdf017c0c6cfe95365c0d6bc83b0b62f9f62a416086ce8. 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/PLH181200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85378f75598156e083f981a7ee68a6cd8dfa641a6ed2727739c81ce82f901ba4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC062387191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7653a900f3f1995bc89d07b43eb225ae67bb0e869cf51de9f935fa87d563137. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLH511200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5425c8b5ae09f5e1087c2209144ff1f18f647e91dbc4697117eeb7015d8259e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLH511200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425da0a063989fd6d505ef90b9214111e5bec7b3e5bd9fdcabe66d247ba1db9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLF241906277.
Na żywo z Poznania (feat. Rafi, Peja, Kaczor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c31cf1b1a77ae030bf8c630c74601a573c7958a67317a9410e23b8b3731f72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLF241906250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f34ce8b3cfe104f97864fbde6cb41b34f5d696403cee6cb3aaf6d0c568932e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLH511200145.
PDG RAPERTUAR (20TH ANNIVERSARY EDITION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e06b42a1044b9e24d3ea21d44a45f2a85e7fbfa4bc9bf6d56bb374b53015ba1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLC062412330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb12825728e0ab2ec6ba358608ef733f56a94a514d80f7094ae03f28bb1d879. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLC062412352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbee7173127cda394b1208092688d4b16b8da67d6f938faf8f72bbfdc42d079. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062412355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893cdbb4cb14c6d779794fae3b577ed37553a0bd7577383422414b7fdea277e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PL41A2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d33aa3c5d711153d8c6d0fefe1ba2a853bb2e21aaad3c2294321e902c09bfd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/PL88H2100606.
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 0x1be4f469a25057953653938c05d75f2d725610b7d2d0c1fc49657db9dde1ea5f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/PLC061807342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef718ade10c3c7592a0b0d4c3e2f20fc1c6c8f3589718be54534269e458c0795. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/PLC062412380.