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 0xee3e0b3f7dc00c7beb7931c74ab5563ef3cc5bab091ef0d1e7e52bdfcd3da553. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5ac2e05-59e1-4e15-b523-0d2945d14083.json and https://artists.proofprofile.net/proofs/artist/c5ac2e05-59e1-4e15-b523-0d2945d14083.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 0xf70bfe555a3ffba2c9a094fbcc5d74b4ce7e9d8bfcdb2a101934d35c77c77d41. 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/TCAIR2419088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8471f84fbda30e36bfadf5e246d3009afe87b6aa17e93be11b04eee76dac9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIQ2419092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05a3056d34d327a32d01f0786fcd6965c72fba30a431c5cd68bbae5f6fb00e. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:36Z), 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/TCAIQ2419096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27bf5a3531295d0f0c8bd5354ffccd116d71305764027bebc415653ad82180e. 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/TCAIQ2419098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199c35d1e22fe7a010a1d4f5a4cc064cc9747af395fa047dcb412c03c886d1e8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:44:37Z), 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/TCAIR2419101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2140850c6c6fbe3b47e1aeba7d074bdc1e81f8f5facc320cbbdc64cac8ceca3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIQ2419103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5318f0b13b9ab68a6b672499de8e810a6ae3848d6e7546049e675b214c1ca034. 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/TCAIQ2419104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4a2a10be46336dbc2a052ae9d5d146d73804b4a8316a5570950287ef7fd89e. 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/TCAJC2415675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36042900f137f6b87c6727a3d61322b1c4e1b58008f28b298756b70c6d1eb173. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJC2415677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6903cc2e194b332ee1657594ae8045976cf4e22c2d1a972136c50577eaca147. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJC2415678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698e170b49c4dd9f6e7fb9a174a9171d3172ed5ef062c5a1e7e9c4b6d77b1cc. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/TCAJC2415680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99594e62d3a79b39547381db2840d0df0f93f04d1f783357ff617307cbdfe7f. 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/TCAJC2415683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323225b21542af649e7593c7dbc82649a456015ead64444b17ae3715d7cdc19c. 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/TCAJC2415686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6d95fa16600709669dd1a8dc350a1842cddb1e014da23451d93a2b7c4b61b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJC2415692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432635e4fba16838879e4082c78313d15b15e3beefd3cecff6f3bf672eaaa87. 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/TCAJC2415700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00342fb0ea734ed0373aa06410ecfad494173e19d482600bc5b14f94effcca6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJM2501296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb04592d139dd1b0166b68b382658e62d03789fe84d1a4ff4bfbc6c4c6b5bdaf. 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/TCAJL2501299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15739256ac926f9f1ef41ed71442f741d1a802cb592485ff0044f24bbe9e4b9a. 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/TCAJL2501319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aaf3aba02e8b423b6bb4479815af827b9083db9563c5f00136846c7ba88ef5f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJL2501322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6996dbecf8e7dfeb21b41185c6ca0828302e8b6a0b5b73cc5e918c922bccb2fe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:48:47Z), 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/TCAJL2505374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565a7c4cebda716ad8f9c660e91d7574e05b1fca8628db4eabaceaa2fafcd43. 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/TCAJM2505386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137a890b53cbd717648c052976998350dbf4a07ffbe4a8dd202561511076632. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJL2505404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41f45866075091d32895fe37dc4506178418e793ac0320cc01d65bfd1001fd2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJL2505427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80baeab2decf598cbbe639d14160803fdb2b4476d3efba7954b106331e3c2f80. 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/TCAJL2505433.