1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcbeb44eff092f246816a5746b29915177565fdfcccc404105b3050c856930f96. 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/bac1d519-4225-4d42-9694-257394ec4a91.json and https://artists.proofprofile.net/proofs/artist/bac1d519-4225-4d42-9694-257394ec4a91.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 → block OTSBitcoinBlock must exist at that height 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 0x040b3e201a2f6ac4eb807df938d519754d5c4828afa4ac22f21e556e6a037115. 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/QZTB82310412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119592b6f5480a0f7b8c8b38b252dedecfde0a556c2550d7eba7f451251e0344. 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/QZTB82310413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcddd6feb3d8dd634e1d3ea7793cdf47014b48c74ae230e01aec5af5a13bf538. 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/QZTB82310414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cfd00f6bf2932bea7babd18ca3076a4d06c154ef2a9d08dfc88a1fd2161c86. 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/QZTB82310415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6eee0b096e86cc2c9489f83b61b93b72c7ca1f5f752ee3db4a2ece87be4cf6. 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/QZTB82310416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6e237eb766b979f07fdeb77a0f88f422241a70fe9932451fbe64df240a8535. 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/QZTB82310417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a84dd083df18cfb38d587a421e2f93951d919593aaf5dfb22476aa5e8b4558. 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/QZTB82310418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891617dc4d920a5ae376983b01a8c42e726d06075bdf73c97fda55c198a9caaf. 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/QZTB82310419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ff3edc32c77efa66d524c13ff0e6a3d6c037e5b9ae80cec481a7c4ffb5d0ca. 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/QZTB82310420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da50cd0c362644e5c69d0564122e019e4e6bb1f624a89bed5b0d92d71b7f21. 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/QZTB82310421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f95c648cc681af38f76d2fb9e9f4b58feaec00139b17baf9193a72f6b8ef3f. 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/QZTB82310422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8727474a2bba469f18dc116953aa5fdda6d55e62de5f1ce969c3320910dd5e9e. 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/QZTB82310423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb235681d719dc8bad83e0cd9ac87a5223dc83b6041058e0bb7afcab55f70c. 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/QZTB82310424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47067e414d0275a07759f5fc92aa9422e8293681e068e536fc821ebca43bc783. 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/QZTB82310425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1421992ad48f6281dadc1d85b8425d175cc6cdd039c8061e809ae2ab2a2158e. 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/QZTB82310426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3fb9263961226a219a4012d23632992193957089d4f0bba8cea9bbcbc106f4. 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/QZTB82310427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005c18962b6fd3aa32f9b99fbc387b1b3ae48f7950e58a6efcdae0fe7209eddf. 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/QZTB82310428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a091d36e4ba6a1abb782e2bd4d630467a55a48974a83dd716b89bc6a2c30d10. 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/QZTB82310429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f617555ef8e65ac6e01ab667476ec0576b8541b36f01b3a7730fdf1843324a. 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/QZTB82310430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b4c93618c15864fae402ed6d1dcca81bb5c8fcfdaba7d40800f917a7429b79. 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/QZTB82310431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c509625f25953190b46d648ac7e1130422b28c8c97f6f877f5443a61619b315. 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/QZTB82310432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148bb7f0178b540fb90147b062ac65065e3deeb7a070bccc3399c80e4f350686. 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/QZTB82310433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db7418adf28f6acfdd0ec09fe9cf0fa69d1567200939f366c47b2afcd0e4c04. 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/QZTB82310434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa19332fda4cae6bd585a84d43f950acae955abf43d16f36146d78b2f620bcf. 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/QZTB82310435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1740dc2a58457995e135a453b3bda4cfb0f4f2f3dfddd04840a7c37ae12af79. 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/QZTB82310436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a196bd44aff16d8ea00fbf4e372ac446d599adb60a1d0f7b1a167ddd5d7160. 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/QZTB82310437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84374c623f8ad05c20de95c06c86796d0560715db7be38f1763ec1d0b2bc1925. 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/QZTB82310438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ee54c98d593412b44fefd9c469726184ecf21b19d899b5e189d905c69ea11. 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/QZTB82310439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf894fe0f0ffd9487dbba51bf02e5ab56153caacac0409f0deebb306c78306a1e. 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/QZTB82310440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e28e0716dd66f4e2080b03c011f53a91beaaf98b1fafe24d6a57a08c4993fd. 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/QZTB82310441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e53ab1ec4793a8d87ff382c3a5d2075055a0a38945f283f976e912e8c8f04. 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/QZTB82310442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977b17e31de42da2e3a6f9d37ae8f682037481731bfcd1e9f489b8254e33c31e. 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/QZTB82310443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c64c6fe9ac6d20c406f41b64f6449fc5f1945f4f5883626ffa5ffc80126d5c. 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/QZTB82310444.