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 0xb0ae4519fc8ad78f07fc0836491284012acd415843881868a865e091d0bccffe. 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/b4de8203-db4c-4a14-8344-cb3831fb0af5.json and https://artists.proofprofile.net/proofs/artist/b4de8203-db4c-4a14-8344-cb3831fb0af5.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 0x76d109e6776772f0e87ba0599a8c26c25df819a67cd777fbc6b62e5c0f70d15f. 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/USANG2281634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632f750ac46215e64ee29ce5f1b540e74784372f9c4d7421d50c84a6d57ddaec. 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/US23A1565812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16980434b9d4b6c3defae5a6d9c7bac6e9fc8bfb39ac9277f1af2049f5a43427. 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/US23A1565813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a27b71da51c5eea93566003388953970dcb527f05d4ff67cb4248c2b131fd. 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/US23A1580507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15208bfce710632ffc0956b2dac13af453766eae5ef52e10677e219653cb142d. 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/US23A1580510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1572928a321b253ddf4f7c69d684e4ebc68611d3005bde1f3dbf364fbfa2c. 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/US23A1576140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f3726aa0ea6b8af53d7eaf82ccca1870114ed1d2d48dec6f738096bb91ff0b. 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/US23A1565810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a7279c8681eb6024908042c5a51f5e43097da1ef107f3fc6c232a527c0a87. 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/QM3DF2215036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358cd27785f11970b9470931aae2be4bff958f70bf2688ef0e53bc8c039b2f20. 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/QM3DF2215037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911b0ad7dbd9274fd3d304811bfce30d1abe82788fac82b49d3613d59954d292. 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/QM3DF2210183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f4f4f1a5865e67e19d38f091daa5b68328093258e3cdf6115caec8ad5b9ca3. 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/USANG2279695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb96e26d5e1cb62361efe7bbacb62ec8f55fabb79f30d54217639781107e05cb. 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/USANG2279696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b102440531cd7d267c689284daf5b6d6e82b95e747c5df08637b71c2922568. 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/USANG2279633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85febf4d6bfd2e6d46536fe92836935647c73e8c4ce1e2b3ae04d935e74fea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR642300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78998fcd4a84648cfe34f16a7cb6f9b60845fd4e23a0996c223ac992f0a94aa0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR642300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f941d9436830299aeee5d41fe83fab183cbc409a6bc943571e178973844a55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR642300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe557daa5102c7e46845bee0a9e569e30312bbf883ad7b0a16ade34f115659522. 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/FRR642201134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1458e4991e7fb4ae04af44ed5b0615c0440af891cef57cb4f173bdc2776c72. 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/FRR642201137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6978bc6c59a36554baeb56dcc30454260a8ffce64ca45ff1a870f4db220e4. 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/FRR642200882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0ee23841a49066a57066054165e942069249d8ba0d4d00e40a23ad00f2ec8b. 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/FRR642200884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ec9c9c6cad55df432ee4dce93d1c85fe34aa4040fd8e9dfffdf611a55f04c9. 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/QZAKB2154213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe0b6a9a833d4ce06e2240a28b351aaf5d123cb95c9b07762c27d69a6458d76. 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/US23A1578310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447e1d70d89979772a24bd1f813c4cd9470b4a8f9010127347fd08fc73a5efa. 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/US23A1578312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52a05de7f926df8f3b3dab6d5789faa2ad092c75af46c8dea657da8882155c. 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/US23A1578314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fc1b58012bdcf5622fe077398b7014aa071fc911983c2f567d0380986607ff. 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/US23A1578317.