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 0x77201c231f562aee2e3b7649b0ed77f4c1aebb19d4e3af4368d5441bf0560999. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea98ccc3-9ba9-418e-bbb0-587159bbb139.json and https://artists.proofprofile.net/proofs/artist/ea98ccc3-9ba9-418e-bbb0-587159bbb139.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 0xac3adc86c0a8078b847c22a397a0a8bcb20e39d55888a035e18c3012097843b7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:37:32Z), 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/DEYO62000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2640042d7df4e838ebfd43d10f698dd7533bfc78493dbca4df1427be92e7f84d. 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/DEYO62000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf2b7de6a07a7cf08c1002fa62df494ce4d68b0a997878375f3d4cb87af4d83. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:55Z), 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/DEYO62000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a45f3757ecc937fc4d4291cf70791e04193261559f8de5a38579e4b87b24b85. 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/DEYO62000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2baee2883e03141f0a2933fcde2c039722de697ce68452aa62ba3da382db112. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEYO62300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b16e4af2ce1d7808a31f40573a1b32e72dceb4c0bd803c7f9bfa316793f70a9. 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/DEYO62300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71521c7f957f09c10a3e7debca97b21e6aa544d7e1e0b3eeee59250becb41edd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:50Z), 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/DEYO62300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933e01774ea2e7d4c7c2e68991cb1c07fd8be0621b8900b74c4a07c5878c5c4f. 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/DEYO62300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70409c2b9e0a0f02a10cc80ee151a96c9cfd7e8753b97f05c618db4e9789e1d8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEYO62300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da05ed5e45b07cf7ae15f9b182e832bbe81cf2a3cbf77a6f730ba7bcd817f20. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEYO62300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b3ea00b0ebfee1ad152e1edc5136840cdcdd32a96c1f1e4f61ca028ba70fa. 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/DEBL62200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b3ea00b0ebfee1ad152e1edc5136840cdcdd32a96c1f1e4f61ca028ba70fa. 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/DEBL62200027.