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 0xb48ed5af7d2a97dcad3b62d35fd2703209699059146381681cd5e22a87e046c6. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33425627-ad21-4f7d-a3c6-27f9296bfba8.json and https://artists.proofprofile.net/proofs/artist/33425627-ad21-4f7d-a3c6-27f9296bfba8.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 0xe3957a4853f0e30b0c647cb8fd8bdba8c28130cced86d0ac36e1732a910d295e. 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/ARDFE1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacf8847692807e323e26fb9c63e1944f40d87c7cba67b0cc1c69418ff1049a9. 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/ARDFE1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5a15f9c7ab2185eb25aa9503f2498548104a7e2e48a98ace1068f43994cf45. 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/ARDFE1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62ad11d93ac98620ab070aa5b01b713b885266e64b3cc47eb2f7269a5c48cdf. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ARDFE1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a601a551cbfebbea87ad4b6d4bb13cba113c9585d9a7111c5c3758ef0f4de33. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:24:18Z), 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/ARDFE1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ab7db3820d5b6b94b26ea33b2111fb72e5737331f49f921cf036bcf17c56f8. 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/ARDEF1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca9de4d12b2ee617331de46fe0340dcedee98ec99413a58f788d552dd664f61. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARDEF1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba7d6cde184844e86ac0a2caffb4a8e0d756e9da525967e98fa431aaff71ab3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARDFE1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd03ced7667288d6591d3ae1968fcaee189c44b7adee056e5edeb6257e9f434. 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/ARDFE1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49be53b74c9bb3b556c303eabf17eeded003760dd67fed77640d5722eec374d. 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/ARDFE1700008.
Danzas Nativas: La Firmeza / La Arunguita / Zamba Alegre / Remedio Norteño / El Cuando / Resbalosa Federal / Cueca Norteña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d74f2f7636fd77f31ac8e0ebfa8db0396ac6ebdce26b040681772d9b23210ab. 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/ARDFE2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc15bd70b60de275087ae3e267f2a73c6e548ab1f5b52f69adda71072cf9396. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:10:20Z), 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/ARDFE2000005.