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 0x03a4da84e20f140b562ae89b80e7a7295153c51b865c1fea7e60fff05ecc39d6. 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/21139070-b0e0-4932-9358-1c2140578487.json and https://artists.proofprofile.net/proofs/artist/21139070-b0e0-4932-9358-1c2140578487.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 0x0d76421def47a809c0c08a4bafb506e830ab760afcdfdbffbf70f276fa3a43b4. 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/QM4TX2311525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275155ff087983de1e97be12e3774ed910ea1a698be5ca0512cbb1547af737d. 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/QMFME2298056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790053ca4d255a6b177f6df6b4c76f4fc3a05129545492b74893984c5290145c. 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/QMDA72224874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccd447225f130d426a1e9a3d3c17ebec07cc232ded33042c832196ca2e81a30. 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/ZZOPM2238674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d59d81cd13cdc17d3404a33bed44b98c0f930dce8601afb24a739c4f35caf41. 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/CA5KR2192207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39517e225c428ddf0204880435e27813e52d575a0883695c1083f35f18c59f0a. 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/CA5KR2117643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971e764a4f50ef5ef5f8c63bbed1db23da2da00f4ec6315a6b1fe8107cf13173. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2141134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadad58757b5da79e29384688b07a41edfb36af7590050ff40b700c384979dfba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZQMB2101232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035e286eca40b021aba76f4b7cb89b5fff84dba57aba351faa71ac16d9fc8091. 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/USUM72101574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5cf3f190f5e07c6f995abeb9cb69ddd3f21d8378f91bdb529f6c003ea3bf2e. 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/USUM72023180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c146aab8882ce0712530e8a06da9a522b2567b5824dcfffc87f8e8491783288. 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/USUM72011588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fbae539adc7c97dfe7b4770fd7973f3dcb68b60b1d67de6a9dfc550904e846. 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/USUM72023182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428e063c714e28ff45f756d66d3c0457baa77d4c9f7bfb2f73c19e2cd243ab93. 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/USUM72017226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55297046f045fa1b6946ee0588a50f0dcf7c2164ac512bfe688701cfbc1f351b. 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/USUM72023183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62064079209b70fdc36aaa3257b5160550f9351b44b029ee99954a6b4bb3d720. 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/USUM72020219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef8fb256092f960b5fdbc18bcf185c97031305f0ee05bacd612cecc0f1f2f65. 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/USUM72023184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea57d292de7193ea0ec9a0606cf1f1e8d4df9673b8cf347d0246847579783c. 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/USUM72013735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9251052eccee8833d57995aec9151bd243d0184bbfafde8340c8b5ccc22f712d. 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/USUM72009336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5653bdf9acb4b529f70479107c49889e23edf2ee8625e6caa225faa18152d90. 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/USUM72023181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8430fe554517cf87716d6105af1706771d56f8ffba4129ba01d68435778514d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72106565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0e080d2e12e14b69554a9ad81e1c97ccba513c6c0677ac78a0492eb4dae15. 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/GBMA22376619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76208f710c00af1f96d5d68ab5e0a2ac39460f8c6583d1ed1caadca4fe8016. 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/QM6P42458437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773fb62a6a546b1c4d3ffa62e3bdcaaa150c0f31f0451d170b90d6324b4bec6e. 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/QM6P42449782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d24d7cf113306f176ab346645c5a6c7842de76ebd59638595cd181c726c769d. 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/QZVNZ2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eca1d22a63835cd4723d412e3c97560220890b4340512ab3042b415879c8934. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QM6MZ2442414.