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 0xaadcce2a543429d9b9c17e35aafbe0784112c8e12c619e8c5fb5c50df5b44173. 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/8c2025aa-f536-4389-9934-624e965c0d97.json and https://artists.proofprofile.net/proofs/artist/8c2025aa-f536-4389-9934-624e965c0d97.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 0xaaaeb5b19b5265c123a7a60d4f5680657079002eb3dd07f251718a85334b1952. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2242281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6aeef23216f8a966665cfd80fbfd5477b9db94a4851dfc47db19ded9847d7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6P2242283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025ac8414dc87bef403978d0a0f419916104b16a7880bcf695f8f56c041f721a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:56Z), 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/QZK6P2242285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfc480ba1feef6249e8466b0fc87321891fced03ac31b8c84ff8efa4fe16119. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2242289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270b7f2b259036d1687bf5d70456f9617260cc7ce85b32adf0321200cc3a0d9. 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/QZK6P2242290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8379b6327ae1feaa99aed9bf39646bfdbd53d9e1e7d66531164e094a1bd1ee8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:27Z), 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/QZHNA2361662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1497b606f23c9067e5042827714eeeb2d5a9155bfaaf8513aeeb3f14186335b3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHNA2361665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1a082eb9a626f07e8b6b3fe7ed8bf5d7733881f895e6b8e7b8e522cb0f45a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:34:36Z), 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/QZHNA2361668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91cd2e11367bbe68ffdbf7235e0eba0ebc16986d99f08fbc838ad4c1b76d74d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNA2361671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ffc5e852c83434cd31fe3938466b13dad5124342f350caacd2962ec6d9740. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZK6Q2362373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ad5848cde54072758fd536fcaa8356f5711e8afb564de4124e82f82c7a878b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:38Z), 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/QZK6Q2362375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac16d08f7883b22b4a7761b4c43ef269ae5ea14c97bb3563bb062581c07c0e6a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6Q2362377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945be1880b1a13ed9b9a6bcea355204de79832e5b9890c42b648333db2492161. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:25Z), 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/QZK6Q2362380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d99cc880054ce66c288dcae8868d807a3dbcfe6f482d7341dbadb01e95f24f. 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/QZK6Q2362381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f7656d943cdafe553374b1f16b363ba800520408dc062d6a23da0e6d46ddb. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:29:53Z), 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/QZTBC2408124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787d3177ce4a04ef4311d28264be5ec52989f5afbd4d219b20229b584976dad6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTB92532054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d3c47647fc5d19628dff3032067347ba0873d4348331c79aeea6886995ca0c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB92532055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e64d019ef2052107c0b0aa2875ba21b4bcfd3e8ad63a5a874bc7c91fc69e758. 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/QZTB92532056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6796b90dd26c6ff5e61a359150b81a0ef2479d696d29f1c386e52648a2f7fd83. 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/QZTB92532057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c5bd7a4a40007cda4c73d8fe8ed2f81d487fe07e0355125fdca83f9e3eef03. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:48Z), 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/QZTB92532058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0eaf33d6cc229cad8d58f9289be73e72172a0b9fa56500a74aa9a45de466aa. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZTB92532059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293df1dd925439a3ec5adca1dc6b0791d3428df1739b37770290a949b295491. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:18Z), 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/QZTB92532060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2219b04a0382a63486e18edddec5adb70b8998159e3bf5e1f169c72527f0ef18. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB92532061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e7b445096b6aef29f8807b133f440d98e760d6c86a390903ac4cda044d42ce. 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/QZTB92532062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e373d00b05534bf2f78832253b1babeb05edc8f99d222e19d1b772a727d3cb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB92532063.