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 0x7419fdb29be2b03466748dd3e6e38132c487bf6f8d8684915f90443473c4c8a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00be32d3-4299-460a-a908-25c5e65f16ac.json and https://artists.proofprofile.net/proofs/artist/00be32d3-4299-460a-a908-25c5e65f16ac.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 0x6e38c7f5a96a0258aacbf561d544e8cba0b1cc67f658a5baecd3d4a64650aa86. 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/USDHM1524876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7034c6a2d774c6c6b13668252f2f40f64d5727de1f41ecc9599f13f13a5e9b4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:18Z), 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/USDHM1524877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83fd23e10164e86486f33302c3f6f5b4aa16d3489bbb5f0cb6ce835af760ce9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDHM1524882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f43884a5c41821e2bd99bfc165fbfed88e10b73a0893b72b60ce76d5c33123. 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/USCGH2237127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf503f635737f198ca79e3dd40ab44e5948d1b867ef34bc5dbae3ce8589497bf. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USCGH2237128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc92a5a2dc4e2ac12fc5246538349de9d3f033086e3e894efe34cc186d433cb4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2237130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a3714ae12ea58e84cb6bf10d8ddf5242e646424a5211bd3ffbb67a6a89d04. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USCGH2237133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3601093fd7547e7ae2ee12057af849019a1f8be164b8197dbf593728cef73397. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCGH2237135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81c87eddea87eda114a49ff28c97a1b9506196fd20110e56c0893aa1fb6d910. 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/USHM82395435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301206d807bf5edbf4a030961c2d82b76a658aa34cbfac277d80f4cd21654348. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM82395439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a64b800a7e6080cd36b00d040c211e721ca1730b040fe0c18c56357c0c23615. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM22251785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01e5675f5ba37c22a2d37e774c082aeb8b688a3f6caac5a47bb86f7ecf9393f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM22251786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb674ab435b702e618dda003aecaa35de99fcbe71218bf44b3ee7b1e5ca45e31. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM22251787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf0c96bb5e5f043ef97918bb040db0b076e532274c7cf7e01b530b47e1d7a6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM22251790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12df18799c7933e64ac4b94f21d008f50459f0a87fd9a56ac3eef02e7c699d84. 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/USHM22251795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570e3d30a663955b5250e219eae824508f8053a857ac3910117260b27aeeec3. 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/QMAAK2339629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78113b1bf70487c8850120f2a0805958e800040bcea9a0a17d8c57fa4ec399. 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/QMAAK2339630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2204f082ea9ba18da52d90146360e029a1351d36641b2500adb3d07ff1be6b20. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMAAK2339631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080442cb6105e3b90973812955fead279ff6dc4b5cbef0c0f4e56b9f734fd0ac. 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/QMAAK2339632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f89bdfe5b6cc25a2adb9ca2dc6d22b22c4b41b34d2adf43b0da80ac39ed38b. 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/QMAAK2339637.