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 0x73e833b5236492a317f2013d9701de7492f7da5854053c44570fb69aa8ca966f. 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/665e76ee-0662-4d38-9b23-5c964581f114.json and https://artists.proofprofile.net/proofs/artist/665e76ee-0662-4d38-9b23-5c964581f114.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 0x2dbbd0f368f8ffc1bae3736c1df113b8b6547a47476775534d2e86126c1a5d30. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM21722228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec55de2f8ad3aa40f59f858a5fa6cd70cb7509ea377d1dc10cdd5e996be025ee. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USHM21722232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54486c7d70735486dd17284de5fcda072418df59863ac38cca6fad862792445. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:49Z), 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/USHM21722234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d14e3c1436a58c742135d11e11ca0ae37c06ef650272ba4574715c8619a2a28. 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/USHM21722237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c02b68bcf0092748f4223cb347ca33b1f24a208b69ab7e8806500e4b18ccaf. 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/USHM21722240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f1bb37e4ccd165400ceb4f32d5dff3610383235d4f6193fa2cc41ef2906c4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM21722256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef76f71562d91dab520c2f687178af098d4bc4c7cb653a0330cff5add785e4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:03Z), 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/USHM21722178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3433ed450428fcf58b66043916f88ce3497eda0477ca65755d5ba078a0faf3c. 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/USHM21722181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe24eb03fe350edae4550541d6a70cc6bd48e6066c302541e41476c3c7e562b. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USHM21722182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb16b927ff729f4d45782c0a18c2580eb3d843bde62f52c68d1ff0a1214603b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM21722190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5309d98d74659ddd93d7a7e67fb93cf57028d7c56873adf1d4da304b92fb1cc6. 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/USHM21722209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04252f011c141c3f4db6b068f945d4627e6b514ebc54b369bd0d7a909a011211. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USHM21722217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a53e5f241b051491d73e7b29a4c8b95985960a5608f831332186c29c926e763. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USHM21703916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289283fa27555f43ecbb25f5a10275c70cb89dd3ba4fbf16f90608cbe3dab2f. 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/USHM21703930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf480514746c1cf9ab932d044f77bcddf660f2324a96f67625bc628d0199286. 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/USCGH2229700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b243db7c839e5edffdac57e522694aa80575eb2f8f26b44e5396fe7794c12. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGH2229702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356ebe5593b96230100a2e6ef394d4463455a430a0c8319c9c720992f7b75b3c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:04:39Z), 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/USCGH2229705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9648235cb522a3f8fa5d8c9a0939c6eccd7cc72048c944ad7cfe7919abec36. 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/USCGH2570800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9d5b024fa6939901f221ad54c9e76ec39e89a102169475375102f7b8a85ed. 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/USCGH2570801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b0bd61de3f7dff0b7e82a5139ea838817466f98566a76d5750b976b59f046. 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/USCGH2570802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e0eb93056af8b62ea0bb037d8d9801904c8bd7c753c56b51d7e5172de34bfb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4R2502116.