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 0xfb079f9300cdee90f94b468c9247829576a4340e7556a7231a5763cd9d0d74a6. 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/97e9f133-1178-4f37-b09e-071a8b417b48.json and https://artists.proofprofile.net/proofs/artist/97e9f133-1178-4f37-b09e-071a8b417b48.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 0xc71a0a38a0a5fd447fa6cbce768488aa46e9339e18c968ca83212b79ede9fff9. 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/BC8TH2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd14057dbe125760dafd425fd0f2cb90e325c7b89043037a0562e97478a519c. 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/QZNJX2193886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2cb2ebb8481e6445a41e79e82ee6534dd75cf2b4f59e9bf6f588b7cf7c30f. 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/DGA0L2398069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2d70dad46ce4031cb8a28412877c6e2142d5367c8085ae3fa7e97e944ec1f6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWV32343680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087ed5a9c5189cc5c74645b7b2d1e768fb1785e4b5ab6858519c905ab19116b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0M2368592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80515df92774f98068649aca404760d1ba192867514b86b533ba8bead07176. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452397602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea886f7a0976088d95fd8351a18f1589fce4a8acae9c3c8647054fa5ab41a2a. 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/FR10S2367346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe965c9b6ecad48e889acb01bda84108e659abe533ca56cf8814ea6f6907191b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052255738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4a237fc8eb335f576fb0325999ea9a3cc811974a757fa77a7c7bb724d2859. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXYGQ2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe39016bc69af8d162897bc12027f313da42615b77df0cf5d11beda67d82f14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXYGQ2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a7001bff0fe5e4c22acf18757e723ad69b576bdaa1cb18aad7b922f172be4. 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/BC9JJ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fdcac52fb3e949e1385d073682aa2eb96f9061dc7e67e27206216e506f539f. 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/QZTPX2186778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b39bbafb62f8746d947717698775d3ec1b1ff508e35f3b614d9b7e4ccf7ea05. 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/QZNJW2111602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39610f69acde763998197fac74b50dd8a9efb66a9a9bdbfc3f15434fd3c45cb9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92166178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaea13c5a8c18ef79ed431556cf5ba7f2c0b679c320f2e0b83b1795f82f35ac9. 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/QZHZ32163857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef866b2876d578a741dddff036e59a12a60adfbcb55fb5743ff54517310490b. 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/QZGLM2173397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b94adacdbda09e3b1f0afbc7d528f8ddbe452b53337c9babeb0fa1e488d928. 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/QZNJY2017857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f9ae08c3ea1a6e41094c0153e5f708347592171b0098fb8a9fe382f0a689d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKE5M2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fe73deaf53dd09cb8cf947328876841becf4922a82e4ca92f628aa8a1ac9bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK2EM2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d99999f9bfe30b5769d7e38b0c249c9bfa2937829795875a1aab4246a2a8ae0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK2EM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1417066d3cd5362f404b069e947f222c22dfa421aa52393bee372e69ed44db. 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/BC8TH2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3269a229a56de42b03379560eb0e6c5037793add8e3989092547927bfa2312db. 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/BC8TH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb510a43c819d0650dc5ba3973503e15395159c827d8fdcd484e7d279c07cef0. 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/BC8TH2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71a0a38a0a5fd447fa6cbce768488aa46e9339e18c968ca83212b79ede9fff9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BC8TH2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60007adc04155b8bb9045cf44b1313f75d2d83385817100bc80f1ce61b5a45fa. 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/BC8TH2400005.