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 0x1fc7f15dbee675193b1bcf5a6583514d60c05731739a676b3ca0b1505ce3d79c. 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/03abdf7c-a826-4dcb-a848-5104d03d32ef.json and https://artists.proofprofile.net/proofs/artist/03abdf7c-a826-4dcb-a848-5104d03d32ef.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 0xe95cbce43560078f8d1f95bb118b5d4d68326625c17cc1786a29c95c8261c0be. 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/FR19X2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdebe5acc42c75ee411a444d2cc75dd7a6aac13136e4cca32582385e0a119a41. 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/FR19X2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4839581a5b676715a3fd95b9a5ff791886c98cacbd9aa1ac93019f80b16722. 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/FR19X2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bce5be1efdd677cdb7a60bb3a801dae2341c6c451a98459b92c473d561cb05. 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/FR19X1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7597dec6aa6f84d918b4e8b55a8fc59425964f6a62ff4b13a10a45b61f421be6. 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/FR19X1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1986baa99787d157cdc679b8e15dfe2334da9144e4721ef95f1a1d6a5a003722. 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/FR19X1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e349775aae76ed80edef6abfce48dbb3a260169dfcf0d842fae9910bfec22. 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/FR19X1500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a747a682de40e041ab5199a4875b14f1b7481bb54e0862ec486ece730fab4d7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR19X1500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bfc8e8178e7507ef0eedcd92e7e0c5055a4bd2408ab27d37f54b00bf5a737b. 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/FR19X1500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d4199abc3b9eef8fb0b4e4ee1cdcd82534a77352b8f65886be9cbab307e6af. 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/FR19X1500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f1f574fd07421e3dcaf5eb329e3d94d45c9df8b639e438f8a78cdf18137158. 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/FR19X1500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c54c4db734614d81587e4d0e94373ee7c41cdf58b2657e41cea68ce42e4a40. 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/FR19X1500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548374d27a78208f0d91f65f4db67b751345e17192982ea800cd26419c4a800f. 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/FR19X1500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea266293922799914d8c797d02118561d46af746415ce187947d7198f1074bca. 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/FRUM70802957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398b3c876b0a6dead3b69d0361d3cca5531dcf5aa3d5678969ddb890e411eab. 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/FRUM70802958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b201c14fd4ebca76d286801a69f4afaf148980fd5535eabddad70f95724b8. 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/FRUM70802959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358c520672fe4133c46983b95485860c7d6ef46df5c417a384f67c944ec1d2f. 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/FRUM70802961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1443b601a4fe62eecc2caef74264aae40bf3695fa699cfc84b34e804b3c058. 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/FRUM70802962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf04463101ff06a61d93eff116aeb062746ff905d2df954c4e09606377d3b583. 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/FRUM70802965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868426c4069f09a3f28f58d283283d120a6f27725eb830a78850a1eba1b83a5b. 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/FRUM70802967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d12e28ccfacc6baf1e2e58dc2742636e825fc395e5b94bb1c0a3dcb3d4e86. 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/FRUM70802970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea266293922799914d8c797d02118561d46af746415ce187947d7198f1074bca. 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/FRUM70802957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4b201c14fd4ebca76d286801a69f4afaf148980fd5535eabddad70f95724b8. 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/FRUM70802959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358c520672fe4133c46983b95485860c7d6ef46df5c417a384f67c944ec1d2f. 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/FRUM70802961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d12e28ccfacc6baf1e2e58dc2742636e825fc395e5b94bb1c0a3dcb3d4e86. 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/FRUM70802970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d0a42ac427f78c2a01f918d9283b6765d932a196e0f361bf3202c4ed8cb71c. 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/FR13F0000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa19325a2da642dd95136fe4e6c8cd289202f1cab1ac74b3e89818f2d7254ef. 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/FR13F0000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bdd92f117267ddb594a9971a305d28e29a6e19c9a639f7b104721f5ef1eb66. 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/FRZ089602450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a173e2dacf92f6d9589f7de0807d1f73e7ffe117067870e46c9008c7f9a2a0. 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/FRZ089602460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f828cf637821d20d9d41ae969f5d671566eb4e0e3be57c6e7d70bab1781fd9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRZ089602500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95cbce43560078f8d1f95bb118b5d4d68326625c17cc1786a29c95c8261c0be. 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/FR19X2300018.