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 0x8cc04f2e1381795612230b3eb1c82463c10c82f7e10216be43e36b19880616d4. 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/9ef4fe56-5da4-4456-8c8e-af4665c5d6b3.json and https://artists.proofprofile.net/proofs/artist/9ef4fe56-5da4-4456-8c8e-af4665c5d6b3.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 0x8f8b5327e1cafc75f72eaa4909bd7ba787797eb0f5f6fddcd22fc6e1b22d3d2f. 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/FRX872123102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2efe4c317bdbabfddb585d71b550e05ef2a0121a196e742576f7d4da3815a6c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX872122845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e43f95ff7d71d5d06bfc554b05af4d99cd8b7c2508d46b64696fa1fcd1143df. 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/QM6N22446917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2442c1cbc9cc0cd0fa332376bf51fafe57a2df5754714e4eacb9462ea3495a. 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/QZTRX2220416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69427af94a184d91fe8d7854be8cb50803997d8fb73fea87ca2b0b7eee860d2. 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/FRX202091139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fefdf692a04b9d39e0bfc850ce5456404e732b623359798c977b10a4be2886. 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/FRX202091140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab0a9fdda481f738d564e31c28f1cb204591b2d760c3c03cfd20f9100406b4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2054315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71935a47f6201196abd01773c35fcbba4b2e34f40bf72f5a954b1130647ee244. 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/CHF032505104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc89cd872899cb0f4274997413f6695574017b3cdaf0e388f5bdc555bb2a190. 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/QZWDD2243265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68dc5b5184c7d9316645e0b95d0304d4d9a76918dcd0b1358b456c77068b1b. 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/FRX282238615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e515c3e985276be84a63c431fc7e06cc3051c5f7aa4d9962e4362082c2ba03d. 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/FR96X2221472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c1dc9d9866b388581ffa64586f1ba4b70799f09f911597353f6d3e3855c45a. 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/INO132200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde94ccaf78361043796738f13b3cbcc5775a1d21ff432dda39b1d3e6a0b6062. 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/INO132102446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe775df30ee48c70acb20cbbaefec16e418c43ecbf523a4bdd986d5242a03c035. 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/INO132200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aba727b6e017c5d892bafa6108735f19cde943ca1c201615859449a9c9fd63. 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/INO132200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb815da5865bcddfaea889edc6bc2444f29716c13357ededa8b5772356d7995. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/INO132200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306fb6b90671e348c37e8c0a8e0dc5ebbf7f9c2e3fcd907217cbf0e2b88b27da. 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/TCAGB2252696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd9baaff52b6937a1aad5b84efe5aa95b8a908bdfcbdcf32e98f5a9a6afb31. 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/FRX762192816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed1d39a6524870abfd8d1fca9a41441ec78fdfb43ec8946c6b8aec96e531663. 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/FRX282121340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d580e9026914dee56ace4c616331791530efa1bc58f89e4ec5759102c0d9f. 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/DGA072182291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec738cbffc04d52261773528b52052dfa8d6b2e4764cf7c188b3b504b521413. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:55:59Z), 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/QZES71979870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab7b6b84314d57c204fb5918747fcfbb803481c75a72cb1b05d0f36e63aab78. 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/FR96X1645771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d33967e4f9bdb29d432da3fc713fefa245472d6d6c39bda756b9ef7084f15c4. 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/INN2I2506626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fcdc4fe6df2f0b3898d65355035b7f9d5870198e0ccc41c39b3f55075b55c3. 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/FR59R2575712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d580e9026914dee56ace4c616331791530efa1bc58f89e4ec5759102c0d9f. 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/DGA072182291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f339621c97d1a8c7f3801d302d334e4fe8cbe0fd14df8b9aed08c0e4c77788. 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/FRX282109958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e6f05945a4f1202e46e83fe31312cd635d12fec0667511ec5303a11cbb715d. 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/INS172102534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa9c6043ecf7f55e425fb4d7decfc81e9f01a9c9bde1bc5bd11222476f1f5dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX872183068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2efe4c317bdbabfddb585d71b550e05ef2a0121a196e742576f7d4da3815a6c. 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/FRX872122845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b5327e1cafc75f72eaa4909bd7ba787797eb0f5f6fddcd22fc6e1b22d3d2f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX872123102.