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 0x744cdb0af631b2a3f4d9c5a90f346d5edbd48c271aef5c516cb37714ee458146. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bb31976-7749-4fb8-b4ae-2df4eade5971.json and https://artists.proofprofile.net/proofs/artist/3bb31976-7749-4fb8-b4ae-2df4eade5971.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 0x104967460ea71132427086e57d987e9df0bb2d8a712f8b1ba350aa45db8d592f. 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/GBSMU5676634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac109e0108d0f268c139e47082ec506d263dfd4efffc594992d4918af7a3922. 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/GBSMU7214954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8bc62be1c32dfb9d16d8530baac62b355b074e890b426ab9cadccc88cd7b2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:38:57Z), 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/GBSMU7328344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d15239c6abb59c0658bd3e4e4f819f53a54809d03883f4becf0b6d8ec391a3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:41:20Z), 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/GBSMU7328348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8bc62be1c32dfb9d16d8530baac62b355b074e890b426ab9cadccc88cd7b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:49Z), 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/GBSMU7328344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5919fd05f6bf5896b894ac6f1c53a9dd40e986dfeedff8ecf7e221d72c80ccc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GBSMU8116153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9543ef3ef608ca1e4bd44b766f93527a8eb75e1bc116d3e2a3424c445ce999. 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/GBSMU8116154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e342d9a9be0fb1081487a8244432171fb63d041b998cbc7d0c2fa09f33a6d7a. 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/GBSMU8756234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d339d1381b48f5d09b8e470070f698187399e9078a8425800b3c3bcdfbe1e9d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU9081858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f216a7da7a1f2455694986e5853e2221c5c03114117c47d2c7305b3530c95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX4R52145620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464cc1eaa290d5e4eca823201985f99a30935a0cbdd7286ae7139182b47e990b. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZS652166701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ba47e170ee3669bb37f1ec04ec0119fa04bb534e60a67423e27b6dfee6ce0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMHL2379054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe526ee957091680e289e43d2775ecdd158a282b0c24eb8567ac9d2a36f37640f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYY2437456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a92239d6f67beac08c9624be91ae870f5f6929fc69c933172d092d5222013. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZHN42433932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3c2290231feeb89158e3b52936afa209e9a8d7393c2a9e8c8bb8c1884c7ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS652335094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467ff6213270408e9b622711c4efb191807b1c41efa6011e22b5dc6427f1d227. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:21Z), 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/QZS652227153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe3048bc05f763e8f715960c6bc84af713de7e9238266385bcf6a78a7873fbc. 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/QZWFK2308275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7e5c793a929ead4845545326bdb5892c6904beadf702b72d66ea6e6577d29a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFJ2325419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b68b930dae140c496a79b7253148fc37ef7dacfec7a15ba2f484ea8deec12a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:12Z), 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/QZWFN2393541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe526ee957091680e289e43d2775ecdd158a282b0c24eb8567ac9d2a36f37640f. 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/QZFYY2437456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50b8e139a08a62fa02db1576301fc4c0cff72ff56bec4f5cd704596b3750bde. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZES82462255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a92239d6f67beac08c9624be91ae870f5f6929fc69c933172d092d5222013. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:54Z), 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/QZHN42433932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09dc7d059ae8f7c4f9372654445501b83b2955eac516c7be9fdc6cc5e4116ac. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZK6L2424964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ddc02671aff6ef8701387d64e4725ca71370fe8e3ecb239617d5e62b8a6714. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:33Z), 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/QZZ7U2452617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8406e10ec44122e0968972112c715161e310750561a14ce8a2464a08808c08b. 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/QM4TW2502903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97b86e0d70e7335991cd95f711fffc84eb1a17e1360eabf291c13502491e7cc. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM4TW2502914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa89b3b165240eda011ed6cebe3792e2a411941c077fe835fa5e415c3651809. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TW2502920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219f40cb928c1a215726182cc855b6b70d884ab9b3fe3caf21b8a9b8d1de7b2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TW2502929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f70ca0bcc504d4b53784c174bb828067fcd66b37dd8fefa135c0fdce5b53f3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWR2532039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf179e3fb835fdc09da737eef0e101b65ec9b4344345670ec4c4fe825c58f5a9e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZWFH2549966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc85a0c1d015aebd1e5775a2ef7936936a02877669cd9650d220937850a5690. 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/QZTB72283690.