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 0x4aa4ee70618b78b055c34a7521b314defd597d76140751451d9d5629117a822a. 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/04432ad8-8479-4eca-9d11-5a92a473244d.json and https://artists.proofprofile.net/proofs/artist/04432ad8-8479-4eca-9d11-5a92a473244d.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 0xc26ef251eeab500210330efe676b1896a8c2581e07e701546f80d25e32321cbe. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TW2018475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedc1250b9c98aae95eba8fb170bee18c6e24172eb1b162ae460ab14e9e5adc6. 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/QM4TX2095587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca0357db257b512778d0f7a0451ad08a4fd602c61cbba4ef94fda8e0ff8b9b. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QM7282043015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d0d8f0854391b37ae9fec56a712aeadd579bf25ab389e8aedab36be3f9005e. 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/QM4TW2103991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf865b83dd841dc036456ebfafaf07ca5a18b6540d91c8f7fb087f2c70df5e8e1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM4TW2116405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cedcd574ba37a4078f21d2dea3938fcb87b257dd6c196498cdfce2709c07fce. 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/QM4TX2164475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c551ebd971c060c7fe8ab0d03dc31321a0566a749bd41d738d6c1d26f2fcf6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFME2164823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc3fcccd86f18527ca1e7e7b707871976b11ab200992d854f93bc4ea9d16d47. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:01Z), 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/QMBZ92269950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b8e4b2131e1aaf2de6cc965a7d8d8eb0f6f0f86fe6df782b57cd40122d95b9. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QMDA72220277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf51dc2cd178177e3307c24045c1f467d40c01fe6143ab81a6c66b34cb24c01. 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/QM4TW2337945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11d90ac411d4aaacea03da3ffd6c19939f9bd61289a892b668fcbf65573fae. 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/QM6MZ2422221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea80646ac4659355dca7117e11aef20cf07dc35d2a60d18717f48a8febf766a. 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/QM6P42428349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ce07ca16ad4777699d8ee6b0d6c13018e566b3d94a433e91675dc5c123158. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:36Z), 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/QM6P42428463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92091077cdb303e3479731d85aab72f92d2fb07861dbfe7c3bef0840b4672b9. 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/QZNWT2493345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c67f63e3373a3acee3e78ea08d11de5476c152a6498c93930d9424b9af1f96a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QMDA72490030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd74821e622fa6ed24edcfd96bbc617cf49b81bc6df33a7b83a31b38077a0a. 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/QMFME2438333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f628957e483928c4db60b6cffcbb79b517828b510f45d47fbe7d0c79d9fa21. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFME2562908.