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 0xd31af3b32af30edc8f401ff05c7a41bf57a53bb62de3ba2a0ded82044afa8b71. 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/162202c8-438f-4b44-8604-88e0754cfb4a.json and https://artists.proofprofile.net/proofs/artist/162202c8-438f-4b44-8604-88e0754cfb4a.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 0x7ce0580d2e761d7f49f90158d83f90a09726a6c60e5f0d2ca4faffa2176e60b8. 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/QZTAT2370536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c9536ad960d261917365e7bf4e8846142f3b0f399b3786e02c16dc5ad034c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZTB22394285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61131e6ac72282ba2288eed90e0b56c3c03f9b2825bdc59b49c1ab486256bfdd. 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/QZTB72382897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4c33ce46cf6089fe33c5018acd438196927b18f5413609d9ccde59aacc6680. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTB92367388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e0c0704237aecf4a6b7cd7b295fc0b7bd4f38791e545fe7036132e9808195. 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/QZWFE2349127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf7eb256f9c8f25f2429ae96a9763bdc2604373311d6c79c09146cd5be5e0d7. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZFZ72426668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979b406c3a5258b0305b999f230b48caf5973ee18798e2644fc7b5fec3813759. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ72441842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f882ea8cf5c20d843abf3ab4588ef1793667bacbc0c11ace1602f0fb96383e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6H2461307.
KK Spinnin & Ljay Gzz Guitar Session 076
Popstar Rockstar, Rapstar Trapstar (Guitar Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8639ef5fbf34e9345f769d6c91710287aaa811fd4a66ea681b4eae4ecae69a. 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/USA2P2435707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa129c86467d6c2bc01f2f4909f215021f2755a7b1b03a7c374d2ea69c903a4c5. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZNWU2449469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4203eda8ef3c11e7ba9b43774375019bd1263eedc676c4d4ee36d30e23cc883e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWW2426967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9da85cbb6cc846d9e165d28009f4fbb1077fb39ee8e02ddadf8cb53074c7ea. 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/QZTAT2490486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21719e6a3e8d4365ed9ae2d5de0c650387ca24582025d4e827e3506f36f7e62. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFJ2495728.
Cakelyfe Chess, Nsh Lando & ImSorryDexter Guitar Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e588c6245c4dc78ff9d7703e50e38a262b394cbbd6688589d0fd6fe995fb6. 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/QZTGW2402911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8ba409e2bbfc01ecd096109a55514ae1a25f6e54bdfbf43cd84ee10f24c50d. 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/QZDA72526143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9f18028ea141e0e2f7d070ef5904dca6bee8be273793c1f6d22703d4676448. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ42581752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65066d67309c2778026d0c979cb6ac6494f9ad337b207ea8a8be78c300066a15. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHN52586153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef94f8adf705c4cd0cefe54acdf58de9714a16516eb2be55e68140f78814527. 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/QZTGW2402913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c17338faaae5f0f3efec37bd75c837720b2b05a6cc5f62f5890685a2755ef0. 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/QZHNA2501135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0519085a552cdeed41f8a0c9f26003d73b550561c594697e2389a46aacc5d233. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZTGW2405419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec6ff2b46f6134a3959719e5a0c541814a1dbe9cb816c98efb9e3ee2125d39. 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/QZTAY2513001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30828c726b4215e6b7c852028fa59f1d78bbe9ef59fdfbe1d6648fd09b4249a8. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTB72564403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43d26b2512ff85612afeadc9fc1ec4d75f0bdfc044d81ef8d4e35948e58c82b. 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/QZWFM2517405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87bd6321b056cc2a79efe3a2f94f10213a71a067f3c00188d2371359064f174. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZAKB2530501.