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 0x92639461b0d3c2ee55e599e52d39e420193617cabe986fb93c9018d272c428a0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea88704f-cbba-40e6-9216-382e63aa3c63.json and https://artists.proofprofile.net/proofs/artist/ea88704f-cbba-40e6-9216-382e63aa3c63.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 0x4c2b2d13bcab329306f1797f83771c9f349e08c21588ce3c63beedf3e15d751e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XY2208215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef5378e9f0c36d31ae6029042f14b597abf98315a900d73de348a207590b6fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6XX2357717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faef4ea24efaa781d258d3608b9f0304e502fc52e88f246db4a9211ed90e8a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XY2146121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63832ae100765a61f61580c7b448f74c53ecc20c80348fa6bdb4b04d1b1d594. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE6XX2123769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee193737b9243f4fe56f29a4d8abc6e88d96e56cee88c282ee58c28d780ee07c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6XY2146127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0983e486d68149abd7dd41cc2eb8689a7398c86a05ef2c9c05d45bf0b419085d. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/SE6XY2146125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837b045636437a61f979a2585b9daab1256932ecdcf3e2797b3479f18c0d9728. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6XW2245450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d8ec834cf78104e1a008282c03e9c9a50e5e0620adee36ea27b677168880ff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM6N22000878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072689c8bb02de7dd9986e6c35c6759db515b5b46463b5366375291ac1b16a0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9K2437878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a1581192072f64f987252383ff912ec9bb001e61d448f5b1f7bf4198b7fadf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2437879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7278c162aca4e1aeede671fad6f1b4cf2e90d938e76edcf9fb34270abb9289dd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9K2437880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce8dc3ab953a38df5f844330a60d2a890d3d7295bbba9c45e50b31f0e34cc22. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9K2437881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6846f3383f64669455e46d2f69d9e8dc4a29ad2625f602d9a36af7ad4956bea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9K2437882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c0555d0a05683262303288ea0a71aff1ab2f0eb8c3cd6daf54564aef2aad3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZW9K2437883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d71f41167dba20c944dc685390361ae0e03889d591bf3d00627abc24d4ddb6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2454562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7427fb71ad37a4d2f9fa0a448a62ac779cf096b7dc5d2c45e0dce759904e805. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZMZ92498496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc378d2ebf14927d741b85e62159db41249e2a45f67d974aaf988be7ebb7177. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5FN2519610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc564c30f109f46fbcf6debc1369f09877f9dc85e0c5daeafe0a090f3ef9bce63. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZEC2436929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe934ae3b234d0f8c3c83c502fe07eff62dea56ad668dec3a6d0501f5fe50f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:13:14Z), 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/QZTV32478214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e977403d92e4c5fb8dba572cf8b8f07cfc2efc9068a38e65272ef0a35e54a2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFMF1901711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9bff963da6aca5327befb7b2c2c7a51b4762a5d15345d4346a734bec6a7c7a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/SE6SA2401455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d69f21ccdc485e172c9ee2a73684ca85a3f4425a0c80b82749525540ca6b99d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6SA2401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9dff039d7cabd4ff895951ae2cb821f834e49a76672838495257dcaf72e80d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6XX2325429.