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 0xf9008be542467670205910ae73668021adb8887de5eff62db060ffed45fcb646. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55afc61a-2b5a-4cbf-aa0f-0bb317c8e46f.json and https://artists.proofprofile.net/proofs/artist/55afc61a-2b5a-4cbf-aa0f-0bb317c8e46f.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 0xafba6ca826fff4220e3669e53da74496cdba898be6110e5ad93f56ab9b8cc438. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2555187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d734819edb850e5a1c0bc822d23b57d5e15f1dafff6aca4527e4bc0a3aa0c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:06:12Z), 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/QZZ7W2555181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf063935f884770638f738c9c1d2191e0ed2cfd58dc013d8f8ec445cb0d035e45. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7W2560405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefac586e8dea638fd476cb48e854c1c9c7712b180cce59980064865417ea645. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EY2521885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76603ee1bb7351666d6378e5b37987119c0b6d6570554de47bb4376d8e330bbc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3EY2519046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5810bcc19072d5060099190e0550a39d5d5b567c7b55a4ddb6adfdc44a626a6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3EY2521882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c31a36ab50651b706dc3a3f46d52be8c1ddc63d78e851d20097c3b0e757984. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:11Z), 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/QT3EY2513189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b3a773c542b4365e7f13ae3b88bce22b17cb2a58ed06e8254140f5560f0f4b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3EY2519093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada3f29e53ed71e35db7ef93ca83683fae5338a881fd9c5f92900f5d27ba1253. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3EY2516049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88c1464335f0f256e87107690cc7c72a1825a9caa51d5a503fda6daa04f23b1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3EY2519159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd506f54e698408af60d600b4dddb7adb13741571c29777d4eea6a19f1a442ec9. 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/QT3EY2576533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a74cb991518d3b65a644368d354fba1742fdff4142d8e616cdf61be847dae2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:45Z), 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/QT3EY2578316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc6cffa53cd4afded0ff6ae84ded7fad65bad0784daaf842bf89eae3bcc1460. 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/QT3EY2578310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae18c3e6abb63d3de6116b824a8b18590505cee1debe68f47bd712fe2d6330d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:26:13Z), 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/QT3EZ2518679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576ef9d491a2a9be4ede053453250eb420adbfc54adcdfa112a303f97d666f1. 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/QT3EZ2515925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd0490687e3f20d863fb23a657870c926e7241643f36b565001fae957750e3e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3EZ2518719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cf076e4f08cb05ec8fd7ab09c0fc38ce63f0474b34bcd7c6401a0f30e7a277. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EZ2546974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14e0a4bf4d7f23cd1f1eaf7f67917f25ad83f1163390dd1dbf5742f76cfcd3c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3EZ2548790.