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 0xa84c25a7206059f87881c0e6538ac96416598ab4e3d1acb114c9865a8464057d. 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/51e69bc7-5d0a-4840-b04c-f968747387ed.json and https://artists.proofprofile.net/proofs/artist/51e69bc7-5d0a-4840-b04c-f968747387ed.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 0xee45ed32433c51d6172589c20bc0278af133b480236866b81f5748b1c9ef9376. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUA611401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e2bf52cc3963a7770c6878111efb0b938d54a137dc58e24a978dcf8faf48ac. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HUA611401876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce581de67bde638d0d60734c4e84a43809e11c43f4a9aaf1443abcbe08e5de3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/HUA611401877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ca2df331b86647fe0a8b13ed90df05dc75da8fa889de36326ae7e39feeca49. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611401946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc6370ea2f38aa2976f6ca663d51b3ab3f7e3469b8aacb8e44713c4601d7dc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:16:55Z), 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/HUA611401947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e9af2a62467b17b6e7056763f694ac239488260aacae7ad2a853dc2df257d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611401952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee9976e1454355c1e4e01aa213c47ed6c6900d4e2067b7fe0121638cbc2d27d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611401956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba254b21dc27d0e142d1323ccbb487758a34ec544c3c556f74d2368dd66661af. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HUA611401960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e93889091ecf5ed77ce9dc65bd34be252ae1467d4f82f813cf71956a5008b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/HUA611401985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58d028a3b5ad3fb400432512877dfa2eeb612b81a68b92778511b8fc2c8c23d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUA611401993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dec922cff31afdb9d97695880283aefe010a83545712709ee04d5792f335de. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/HUA611401997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075efb901c1d63844459b9204084bd6b33e286e15ca13bd29d1fce5c0c88fc55. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611402033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb6aa271921dc3b32992f70d4a38f23126a44a0eb9f3bae2f58ae8caa14acc4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA611402034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135194a7a72f739e9019055ef0a8e55e9201f2b21bf1654beeedd20d312da436. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/HUA611402039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc47de23b9eb092e4bc64ed529afa31d92233f0c5538f98b4f575cec464912c7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/HUA611502072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893cce2194aeff4ae40c57524a91d3cbb3794c516ffe79198c4a0d8b1965a10e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb27c540ebb1589582b8ef10716a125666b456f997e67078c12d85d4e82cea4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/HUA611500725.