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 0xfa599e417d4ad55f6cbfa99f7e54494a945376b82012320f522d84ec78705856. 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/ca5b3806-c808-428a-9891-d65a2a61832a.json and https://artists.proofprofile.net/proofs/artist/ca5b3806-c808-428a-9891-d65a2a61832a.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 0x31bd8596cac72551b5b369455ce61f6c38e65286b313bd0ca84d5eb36317ed09. 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/FR96X1911407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe3f51d5a8625d6167948e093f6f4cea5b283d7013a9b061a8eaf6826695c0d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX281939736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cc70a2d8e571c284d4e2b3299a952f0f40ec0c08b9559adf48d203fd32406b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:21Z), 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/DGA062014826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb5354c5e6e1e154dff2f1cae286d32c30cc089161b3983f77d1dde9855ad3d. 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/FR10S2147457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2496ec09e43f41bb66f19feecac45429a88510990af806e5287fd8fc6c07a1a1. 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/FR10S2147459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcda78709cea5b03870d886fad4b2ffffc4b16c249e370ad68b610de0b2bb45c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX452114396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f075fd3b2928dcfd2e7cc63d47fa7f3ba1ea738e0d240c80035931364d530c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:35:20Z), 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/FRS182130546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dbd61f877901a21a30ea1c4c06c59f8c8686e1e3bbcde5395ec5a542dad06f. 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/DGA072238811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416473078c22b99bfa8bacbb87522a19012264fff3271250946194ee2a051a5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:00:17Z), 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/DGA092208318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c4a2cb39eeec6e5cb4595034b21c1c9306beb68ff49855a5b841fbd1eb871d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR96X2381471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0d43d4e32461877a9d7fe05278a6ecec9a0993f962e629a24ccaf0635f239b. 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/FRX762366386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2d1dd5bb1f59f8957a2cd4a21cc90e26406769264f88145bf5acb84ea37a1. 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/FRX762366392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa48015f78ffd9ea30ea9c1e8fb534877005f6a87827900bce4dc1a3345bae. 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/FRX762366394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83394d28fd8050379092419453df6e47b4d9dd96aa64f4a14a86b003ffdaa62b. 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/QZL5N2442807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ee613733f16efa0c8394c01ee33c02695f268a9bd796456adbf8d5201c406. 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/QZL5N2445304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e81e765a4e26f1820336be140cba76565913edac2ed57627486c0613685d410. 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/QZL5N2447682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac822b9dd8b6b281dc21dc4913746a3dae8872c1c4607579d80b16121ac3f4. 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/QZL5N2450801.