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 0xcd76058ff646961a84b3a07b9db8f1a5acecb26fad10661c9b7590a47f67dac4. 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/8cd6cdf7-d4b5-4278-a22d-3fd0a5643833.json and https://artists.proofprofile.net/proofs/artist/8cd6cdf7-d4b5-4278-a22d-3fd0a5643833.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 0x114379f736944c161d77fe77bb0a2b98671407fdbc9aedc8702d07d17f38e145. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZAKB2346041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf765fb02242ae21c2e0f6e1797757101c09e32e8aa1334c0fb42fe24f6f69caf. 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/QZAKB2346042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde4f18e994154cc937e47c22649a5f07b8cf8fe050befd66c4f791ba611a299. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZYD92402740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3773c0102efca2f6fce6717eefc149659a13be70360f9cbb0cca2aece9e0f7f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZYD92402743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177b421caef919058e1c6c9ee6dfe924cbcfdb4e9e6e1884ef854be4ccaabb5b. 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/QZYD92402748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfaf6cb88bd0955ce4290968f5cbbd0e8c8582667e85eb719b11c22c8a60909. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:00Z), 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/QZYD92402745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c53b15796149c78dcf6dcbc68870a68c3dc206111ef56161b0f9e877a4e0abc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:13Z), 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/QZYD92402741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839a13b38b5994260f45936c879c08fd173943f74045bb3cdea40939b9a0e99. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZYD92402742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ee8300baac521d9c6981998a5411bf14ed39fe1bb718f8b69a33870a0187d. 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/QZTB42411333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dd070694cefefe929b44e829e2c78a3dc729cbc46e30669d29230e44aca696. 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/QZYD92505767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a525c6469cb3f87c5f58b6ccea8f79cd836069225536582a2ae1e3b2afa5a2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZYD92505766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb3ac5819e00dfce18ccc42ab85436fc851fb18f52f73fa86186926467d7b3. 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/QZYD92505771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c15dad2fd169494583afca30317d6213ae40f3743680f6e8933eaaa474f75. 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/QZYD92505763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba024e5cba660c72dab9a58e445b49fd1fe29c05e438561e8a47641e5c720c4. 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/QZYD92505769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585b9b40f1bcc7def37010b9009bec5eae1e98a5a2bc9be0537d2a4c355f120. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZYD92505772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9998a4c29524d2ce5a1cdf3559b7f1d6ea26f4bedcf8efe2867f85d8bf5965ab. 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/BGA472501975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe098142f24e70b80ef9947c946e8a33c672ad57984dad97855ea7f409aa7c3e1. 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/BGA472501981.