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 0x72aae554e93f39faa3039d2c75d1188d144b60f455d9b4ab6f4325cdc79cc8c6. 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/a3d33ac6-cad9-429a-9656-d257b011a2eb.json and https://artists.proofprofile.net/proofs/artist/a3d33ac6-cad9-429a-9656-d257b011a2eb.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 0x68ee4749f1f1bb2efc0b89e65204e4f24e3e656716203a9dfd6fcc6641eb6565. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2405870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce3c97c98fa70f68e94224f599030a66178f554ccf41f151cc8d6a4c0fdd3b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2405872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f772e8b5f9a1dd20cbdab1b1ae1241e7d50c6794ed08db62d66b6769bd6a8. 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/UKR6V2341350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bcf9e4e24b473000d5a0d8e236108e5e5d1ec7b0cf8431f373de1a67760001. 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/FRPES1700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c35b6baa129c2784b979bf88ccae9917833bbd72ab856563496bfddc29a858. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US83Z2419739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd610b07d34af9880daae00fe1f70274a11b4357e42502f6c2803fe429881895f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2408765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55c4291d7a012f29c6b05d6d5da9aa7dfb15b8eee85548ebcf27285a395b41d. 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/US83Z2499643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eda901c297757bce22502fa7aab7070d20f8dc508ff3d46f21264bfb4311a61. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2499642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe883d3aaad796a8d189bdcca83e47dcc917967ea54e16162905527fa0ec40b4a. 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/US83Z2401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a06fff997e50d4697d5b00d67af63342efd6e116029c2c8928a83bd6b83392. 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/US83Z2487722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f87a4df8959ca925659e6acc47cbf5314e19bf36689c1c1ffda7e969d19ab59. 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/DEUE12333344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d1a60777182e5ef5849175a854968763e4794da9ca99ab90def0c14e56869. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US83Z2343792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c0a00572f4262a24ee0d502e31b73e07f2ed8c309dce64756efe4c13af771. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA062352030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe368c279abf0b8210b2852bd3449c02fb8337a7b7241379b3822161b5bdd60d. 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/NLD682302290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd2f8fe4f38533411421f500e10c577a0c3593cd09efd392b3e7265f9232d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2318230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c33a2369e7e2f6698ef342aa1ce2613daba6757f856c051c9dac88ea1a09655. 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/US83Z2318232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064fd5dd2f83718f1a95a2c409d875990cbd749c8c7f2cf6b740db28be5556fb. 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/UKU932230977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d28ca832c04e7f1b8201fb806a6e76f845f2fd796aa800dfaf84a3edf3fc56. 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/US83Z2210407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195672537f615c064d2db941ecbf5709aa693e690b25876e944f0cfa3694af39. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBJX32142007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1bf3a52a076bde57fa8226af26644193cc60564c69cc2489c1e8f30a88f880. 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/US83Z2034491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b19e179debe0defe6c4cc27b976705d7fa6892b66e45a9b42712b9a40a77680. 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/US83Z2028940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae496e9b06900bd8c7d7f4b79842f40831fae8066fc0a34f9c3b04fc57507857. 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/US83Z2028943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e078e64643fce09da34f1ab39e5d5fbb91b139591cdfc705ce3aee4db95eb4e. 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/US83Z2028939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf54e4251101be52263c15d740289213020cfda34c2be6749013c3350f11a5ea. 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/US83Z2027242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9bea0c66cc39dcd3683b37406fd66413817cfd425af93ba184a5df4e4316b0. 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/US83Z2029728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a1af9a2ddcfb755e5a7d3e67b2f2ca2ceb9f87391051f333c36d2570ebe5b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2015294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d9bd4bac3decbca60cede4edcc9a23b6e4879f2d1ba9df4ef44d9ab9ed8377. 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/US83Z1825571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195672537f615c064d2db941ecbf5709aa693e690b25876e944f0cfa3694af39. 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/GBJX32142007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560bcc83da88280ca09987e1b8ec850cbed9ec4fc2b0658ed1f5512515022cd5. 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/US83Z1917891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c030adddb0cfbfca57b1223d74798deaf7b814dabe2a87eebdf883f3736ff1. 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/US83Z1923824.