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 0x7853bc4665dadf7510138c1eada45070074eaed6a7ad7477b4ea2385f45c2cb6. 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/294cf326-f4ff-4cd1-805c-d2785a652e2d.json and https://artists.proofprofile.net/proofs/artist/294cf326-f4ff-4cd1-805c-d2785a652e2d.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 0x91d4440cdc53ce5ef04e90cbbd2ab1b60ecbbab74db67945fdb5bcb2ae60e752. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZLQR2132401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1873ab46cc6d6cf5d66598a1d411126112eff7cf0a87e1b649b17e20aa70168d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA2P2220217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6831d3e75debefe05d7502f1671834d7b36db007fa4268c3ad122af90c754a06. 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/USA2P2220230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797a5c533b94f842b568c80acdd86a2b23f016fe20bde94f65e60c0fc588b728. 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/USA2P2220232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce66d22fe38525883fcfcb9d807f4cb46fa17346c8fc63fbe5f8f0421661e1f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:00Z), 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/USA2P2220255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58bb9d74aed3aff06d4a87efa7661f9f8a559f7309a81ce8083200d111df4fb. 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/USA2P2220226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefbb01f66b1a43366bb586b6383d7d9257f6c7e90ad99022e9749889a06033a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2220250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8847059afe42c253ffa9130ddd68b0bd0585217d31d683c8dc3faddfb82a830f. 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/USA2P2220242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d8111000dfab8f4ab03f4260c2db2d40557353c7d6961879498c3286bbc51c. 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/USA2P2220259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa946753a85a6348f76ea88ca23714d4f014d49712536b4e3595492d934e66845. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:38Z), 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/USA2P2220221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391d37bd3915fe153ca8b31ed2411754ab6c30a0443ef1666edbdcf0f36c96f6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USA2P2220222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f28c81128a156f0ee4aa65faf8aaeb513afcb0e5c756efd34cf52c8f493bc02. 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/USA2P2220236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf74cc283916ac16fa4ef55346e4d4e04b0302e390b9d78c9fbeac83016376. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:30:35Z), 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/USA2P2220238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9594916a698d0f3e20238ed8bb4828c08e1cf54bebc56ecd3279032a3cf44e8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA2P2220228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bd2bc4e7730bd46cf79192e363db6428a1589b2467ab023b42eeeb73743b80. 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/USA2P2220234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502126cfc7cfb9fdec6195bce7de35a21e3ad066c38a7c4cdb9e58d33e850516. 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/USA2P2220223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c838920174dd71a44d7f8d77b120c8c78f960631bb8950bd44a73401869daa. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USA2P2220258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a30ccd70704df605ed6f498dd7d7211d1b527e695f087a58b914f59b96db9. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USA2P2220251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6d43c7af026e812085bd0dd331f456849f5063c6f9df8d0db51080e3de412. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:25:37Z), 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/USA2P2220243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c875c761d04acb7dd286bb58fbd5388a97be12604bd8d2d6fafd6e6ae63923. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USA2P2220253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c5fcf37279bd1d72d5ea7260b49a76a2d09495001991c2a0f88cddb37d45fc. 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/USA2P2220227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895455b7afb6068cfa440fb8898490780630d7e2a5250cd6a264981527500ed6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:03Z), 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/USA2P2220260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1d8fb4302e87b8c8b9a39523983e7eb472b152acabb985cb5ac889a5d2d80. 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/USA2P2220244.