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 0x81bc95f1a6cf906228d8af346b1b4b4da3586d5467a178af3149648559265e22. 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/4282136d-b824-4809-bf96-f166e475941c.json and https://artists.proofprofile.net/proofs/artist/4282136d-b824-4809-bf96-f166e475941c.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 0x9e019eee7b55221bc2f83bef7a491bc8b92edae7115548988d30dd327d521424. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEPI82431749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aa00cb09e7a0f039058a165b3aaab76d45c581953467dc2fb75c32d84b9c1e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPI82431746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf92a06513430594492c843441d18718e4ab2061d33100fad1ec80a97d76b7a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEPI82431743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c670f07aad57c9188357be84e3f7d7c3f27a2d0cbcf940e5f26790e589d1820. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:49Z), 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/DEPI82431744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf456934121701bb5587b85523994c81f6091e62266bc4e9c4ae8e2dc41c6819c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82431846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79235a77eeef4590a301ecb61fe9c0e7a7186d0def0961afa68d95c0650dde17. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEPI82431845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9b3b46825de67fc661ab1998f7967c19c3ed8d26af60f5b86dc2461c95d819. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82431847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4221dacaf03068c290135c634182444ebf675cdd47e1ad72364367e095a54dbb. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEPI82431850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee529a4188f6c76839a80843f191202defd35b0d58ec8231d69ff3e406d29f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:17:20Z), 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/DEPI82431849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d542e5e448f21d6d6171e6b1b81277c71885229a0d988c7d7175bef272c66. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DEPI82432073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce373db140905654e72018750bf3e7876767f1b7d49e54674dede86304a4b066. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:18Z), 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/DEPI82432059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dd4dc180504b47176b7c2855c5594bcd522e12eda3a2ab11977daddc649647. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:29Z), 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/DEPI82432068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe566b8de2402e25db1cea7e081e556b9140a91541d62a5bcc3323a68dcf695. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:27Z), 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/DEPI82432063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8651bcb070c4f8fef0590d736af82160228e89e540aff1ddf0668d3daa65a2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPI82432076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce00da8434b1be0fd2ff2b14bded5d3b5dc09f763024fb5e0cfb143156c1172. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:54:24Z), 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/DEPI82432450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9704aaff1ffb9d0f3c818e97e359873e4c64a62726b71f3445804c33bd2c27. 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/DEPI82432447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2412889614ab9a7df59b677aa13b485c8ac71bca3ed4e523d1f01d89469d2deb. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:41Z), 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/DEPI82432423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae52f9dcef1457db4a47d8341215ae966c7c64443f670f78393ef02deaefc3d2. 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/DEPI82432451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542f29be1a1ff29218a9c3a0fe16d029f97efa6f02cbee39e6003a48b3cc5b0c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEPI82432608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a45f53457c6bf0eb9d976efd27594c703c920f06061ca26ee229a66410148. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:12Z), 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/DEPI82432606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3345e60b58770cd8479b31f0d623064af506d4186f7bd39920b28364b53929d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEPI82432604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8fd5eed75d3aee81278ebd08b3a03474a7537f3cbd49a9597eb4682a25bbdc. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEPI82432605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf021bc68de33888cc57a912e7e67ad287ad3c8cc5ce2793362f44c9db8e3410f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:54:48Z), 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/DEPI82432603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c794e655cd06a6ff2074c6305e4043ea16a435e13a66b7b6c4d0bdd13fffe88. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEPI82433507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff6ae58f1eae74c765288dab4041e78d65e31bbe8b09788a2898a0c0ffd893f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82433508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d027731335fca63e978b7120878e416872b7d61008584f28c5562e9dfb6231. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEPI82433509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf462d0416d7ea039db0a66592e5a5d7febb7debbc858a943e5c1ae9c441b261. 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/DEPI82433510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3305dd6b8aafa4a30044ce0dc900e7c5768750577c0dc0d5653f176fef10aa7f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEPI82433512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822e465a7f608c565771a4312970b3f111e140ec55c2c26e7eab4ba7662adc9a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI82433513.
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