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 0xd37a3b407637b7c654694a0c65b7c8b429598b0852ab677f8e2eb73599ab93af. 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/95038b17-f60a-44fa-abd4-57ad3ccaa766.json and https://artists.proofprofile.net/proofs/artist/95038b17-f60a-44fa-abd4-57ad3ccaa766.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 0x4407b4b2f68e885d7b85d56d98ae95483257bb9359adbc9b4d86f155f202bbe9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:07Z), 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/TCABT1482467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2590f5aa3b7294a7a88a067d26f7fd69a1708688e0b3239ba0259b46a4f62e40. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCABT1482470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b48736520fbb7ec628267126b86295eab97eaded12474fa01fe8da15c84f86d. 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/TCABT1482474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e87c2f9a44c4d0a4b240fd6119e6165a0294a24254d9e0627e5abb61272ecb. 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/AR6B51600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfa360f36116206e6dd3fc7c5da052f03c41b2750d5bbbc7b9766c374d255b0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:06Z), 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/ARLHR1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c43e45268e7a5ec06d8dd1f98f448f373b53f1aa5c27e99491398b94df2012. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:50:54Z), 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/ARLHR1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e87c2f9a44c4d0a4b240fd6119e6165a0294a24254d9e0627e5abb61272ecb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AR6B51600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35962cbb22cddfb2262a9b9c5e846c9ad25be63f5b182456c5301f707519015b. 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/AR6B51800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c2458c1a180bb8157342db465101ea12d509a0dee881b35f10291e87cdeeb. 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/AR6B51800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecb27ec8d29891e0b498112ef0861be84a2351c9b9cbb7a2a96543bb5eb5f88. 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/AR6B51800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb152dc49bf84000ea6c956ea32ae04334e48047719883616b3e6da0b98e6069b. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/AR6B51800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667a64c7b511dbf2f569871e78f6f1035a3101233b8120374cb62f2af780494. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AR6B52100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a3d442c42d60d7dcc4f44a63b91093c8790bede781cd5d8c0164e9cedcefd1. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/AR6B52100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa23026c9c9a74f3ee193207d6beff89ac91faea4a2d7a31a3ffe1fc3ba5cfed. 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/QZNJW2252861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231e08a2f59525bc3cb3fa76c2a5d84a71ba1e6a31513f6ea18d57a24f9173d5. 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/AR6B52400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c113a1c58f7620af18f163721a2b7424be212aec01c58dd3e105fa68fb764e. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:36:24Z), 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/AR6B52400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc948686e9de9cf64854afb60bd8cddf35e6d249750564c29477a37adbf556d9b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:13Z), 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/AR6B52300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb095fde6b8cdff80d6f9f32a84e38264501cea9530323aeec3d8785a65a2430b. 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/AR6B52300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640d02f84758a15b30602410188e935baf0ec42c1e2f720744052c765b7090d8. 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/AR6B52300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ceb4b1926bb5bc90f4d11fc5b02c2efdaedf3bb6c6450ad2f198cb858ac5a. 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/TCAEO1998279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c8d33f372112f7f8ffbc1d32fff62398e931ff5d30005d69ea90fb3efd7fd1. 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/HTTPS1802342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efb8c39626178d1da19aae0e40794072e629841ba2b755fcf8f719a5e783a6. 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/AR1RB2210008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6121b9d7e30d65b6594b9758f00e8ac09266dd44c3c5a3a45f2809cbf902af73. 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/QZNJY2182076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf360b0f8cd1865c3a80130fcf74dd978f0b280ac84d4836faec3ad28916401ff. 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/QM3DF2161286.