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 0xa6c92962debb681e5f7215914ec5bf77f64ec6ee0f819a5e6b823b7e67b8a3b0. 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/fdc07242-2f8d-4094-a29f-65f9c01f96d9.json and https://artists.proofprofile.net/proofs/artist/fdc07242-2f8d-4094-a29f-65f9c01f96d9.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 0xc30ba1b4da791e9143859d4546a46fedc51bd27e3edd49efb7966a9985ebf992. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DED832200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827e2382f53ba5197ffecd655a189b62be95e8fb494f687479e7689b4c5a36cc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DED832200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf5e351c0bb8dc58bf62d4245eed8ea1b17ad068717220312380d5a795b1b17. 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/DED832200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cdf15439134e0307385982c40752f244c52de7c39ae35e94b8b88767b7a2a. 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/DED832200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0535899c0793d1e69c8d0156b882b18513eacfe9bb4325309d27916826ce1b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:19:48Z), 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/QZES62160304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd698f896e70d8b876f5206b47f7a90a87eaad5064758b376eaa5cda4bf35f20c. 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/DED832200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3551d874d518f9670dee89b4c8c5c040ccb9d6882e6bb2891497590cda785eb. 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/DED832200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb725d0045dd4220c646439b1eb7c5b499bf473f8f338270cc55eef35cc81b8e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZHN62138038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e684da736f16b1ac5b361b024a2b3c8107d823615752fb2e2d2fd24a772e3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DED832200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2453e2277a15ca27fe95b0ff08dfa74063cdbe707cb1c7ceb9c5b87a467f4130. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DED832200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d188e7c3ea0df209362fb1f81113055db295f3305739c5b6c4cff537929b98. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DED832200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876dc024273116640e3da56130d297519655ff3f4c13d2fd1e058b0ef941d21. 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/DED832200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd46f01fd2e9b231373863662c4a359465722139d315b30ce3ceb84c8a9921b. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/DED832200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e684da736f16b1ac5b361b024a2b3c8107d823615752fb2e2d2fd24a772e3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:42Z), 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/DED832200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2453e2277a15ca27fe95b0ff08dfa74063cdbe707cb1c7ceb9c5b87a467f4130. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:54Z), 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/DED832200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6343ac188386e29cfc53f75d284c2b70774fb0a20ba1e5b11d265b63efca63. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/DE1K12410104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dac117d43fe349b6f952d60b16047e3ddcc121f9ba7f9638f1088911bbda901. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DE1K12410106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6343ac188386e29cfc53f75d284c2b70774fb0a20ba1e5b11d265b63efca63. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:32Z), 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/DE1K12410104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc845c83629f22684e951b78843d9f03b6f7ec86f6e906e78c1f56eb7b485e548. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:23:30Z), 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/DE1K12410101.