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 0xc54604f15fb1cabb3231dfd07a50dac450399dbc4801a10b0cf8528b8a028907. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96dde24b-432f-48ea-9663-c7c41189f76b.json and https://artists.proofprofile.net/proofs/artist/96dde24b-432f-48ea-9663-c7c41189f76b.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 0xdda8dd46287491ef154fc9042394f8fe8f36148f3e6b3e7c82e71e02ab138fd8. 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/QZMEP2438376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2c506d7ddbc546f029aeca1b68903daf7fa8bed902bec56bdf4febef1fa2d4. 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/QZMEP2438381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c64a244b9b68b0be586761080fc902fae35b0d245a41d7bbf5deabd50bbe0c. 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/QZHN62400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee4018cbbb494d730fe9958a697b50a52c8fefaae1f41ac55656e1fbf42f08f. 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/QZHN62400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b09000388246a3ef3091b51d5b3a3abdb83025e77672f7608de627a114fe9f4. 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/QZHN62400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fa989a2160d80c3c3e597ddcfd21917740df3bda11417088ec7b65f1f84f44. 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/QZHN62400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785b54c1f8558a028c1999e38c1867127d99877741f21afe902fe31d73682275. 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/QZHN62400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd729d5639c2281db0272e50b23f2375ffdceca1e21b20d101e9ae55febc8c2db. 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/QZK6G2385451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a66a52e9e005b859dd87fee1f1f87611d3d6916cd2ff068b031a05c9a233d. 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/QZFZ22359388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd3ee013b34571e8489183b64f684a892ab0ae9be09cd050cbd735744c30997. 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/QZFZ22359390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a142fae8b8f393d91578a4997d24c2961620c1b408b0cf7507fc49375fd44. 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/QZFZ22359396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3da740e82aa171f1be416f3f0fe01debf0ec73fd1fc7f321d9f2da01d6a39d. 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/QZTB42283020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84d32351470f1b61a9638251fa9218386a2258e2e848286d2945d5164ce6d66. 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/QZTB42283022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf268da10028e60f693d1e66af5b7522f693c38c3d34df77ec4017055eaf936a3. 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/QZTB42283023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1af7b183691372366ac3dd6b4cbaa9869991387bc7861eb71d7027d0635d40f. 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/QZTB42283025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8002ecf12889a4177c314144236252c65d46d5f1c72535c003f13bbd004fb4d8. 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/QZTB42283026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da32411afdfc8a939d4c4d4f62b36addd997f349577b6de9fbb15aa9e544db. 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/QZTB42283027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd483ab34c84d9f2157bbbb382ccdbecce4d008433e185fec85fd85de3fd0485. 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/QZTAW2275725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd9e674095e02e4a35c2f2dd9fad363ea388d72555dd2b304d27e92d14266a4. 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/QZTAW2275727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c9cc9cacd852d938c05bc484130c62e504abf576d405cab4626333139de41. 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/QZRP42271240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1aca0a4f04efc3fb18ea6c791028f00f273b48c247b34481fb2b5c5726864f. 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/QZTBA2384304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec1d517640a0fb69e9bfa422971abac51b05ef84fc9824a9c53cc1dee0fdadd. 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/QZTBA2384308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e66330f5ea8f7150d4978c2b7e381dd43cb2db5eccf07a492fe7050a8f3d23f. 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/QZHN42307677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb80c741687fae67ce9f50a106106c18b6b3ac063a3aa7220b7d43d2cd8130ab. 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/QZHN42307678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ee8ee2d90127df66de7461bb1db1bb2c0d85a4b828259bd6cb69906441543. 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/QZHN42307679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec33c78dc03128ee8b237c583417fdaf93656f4fa9db1e073242652eb263110. 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/QZHN42307680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3179fbbd846a46bd0f429ef3c98776105d6a44fb295d0a62fdf8821534be95. 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/QZHN42307681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02253170bc01c60dc9ac9fba595bb7b4926fdffe332a676791b4fae0d3937cae. 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/QZTB22256828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e636b388380839746c434b9bdb873427e61c15eb69f551661eab528bd4cc5d7. 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/QZNWZ2264421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af90f3dc247e1b4d17521cb0d8be334fb576d271703ba021e373bd79ae52c7. 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/QZNWZ2264423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb82fa37e60120b6510bc7df90d8445c929433bc1495c2ffd97b8ec67b856ba. 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/QZNWZ2264424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e4715db78576ffe3067cf18cb48cf371ea50047caecb35ce4922b6cde5d89. 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/QZMEN2253617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc609913a31e983d40069644a718dd4dc00544fb77593a32e432b9fec098bc60. 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/QZMEN2253618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d077f99001bd5da5ac7f712a0008ea8636ce6d406f2156d9c24db0251779b3. 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/QZMEN2221435.