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 0x179e63bf4219cd5db85ad8ce87cf6d34517e5c0b6ec217df0909618c0e674cb2. 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/4a39210d-8aa3-4a9f-91b4-7507d2359b8a.json and https://artists.proofprofile.net/proofs/artist/4a39210d-8aa3-4a9f-91b4-7507d2359b8a.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 0x02fca23f9de6ee9a7552e204034d856914b5c24bdbe5404d35509c571bc5b659. 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/QM6DC1999998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c424421366e78489696f9b1fc1aab8858aace0d7a574e9ec52e8fb13c84336c. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6DC1905068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936a68db0da8bd2ceda334eea8c26c68caeda513ef71192e5f513c4c597fecf. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QM6DC1905120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff79c1445489d0ed7c188be6a101a62ca9d15d51f6703949a2327e4b6d76bcc3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:47Z), 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/QM6DC1905121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bc102b5c6e0c6a48d23ad5840156900c3a313e087b04857afabddece4c6b34. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:31:10Z), 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/QM6DC1905123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1e9e1a0a721459b54fe620a9c3756a5ed5960ebd7a06c0d2042c09dba70fcd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:23Z), 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/QM6DC1905126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7730c63ff46491e330cffdbd4d923f3fdcb6be01c8eb9935575cf286bdf92f. 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/QM6DC1905130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb676d4e633a5bfcaf6ffccc3fe845939ab7de17fc21dba0c23ddd9d425afb. 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/QM6DC1905132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936a68db0da8bd2ceda334eea8c26c68caeda513ef71192e5f513c4c597fecf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6DC1905120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c74043c56cf69ef4d7c5b2244e28e9d4fa92f8ed0442f2542818c1ebdb1545. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:30Z), 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/QM6DC1905124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1e9e1a0a721459b54fe620a9c3756a5ed5960ebd7a06c0d2042c09dba70fcd. 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/QM6DC1905126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd488255020c95ad24f9e2a5f80f42ef6b13e5234dfa45864f813d924e7321df1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6DC1905128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20603176d1fb4d28cf8be05e585cc81f74e2d98fa35018e83007db215fb051ce. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QM6DC1905129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb676d4e633a5bfcaf6ffccc3fe845939ab7de17fc21dba0c23ddd9d425afb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM6DC1905132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2177879f600394040c5ab3e8faa25e6d648e6688ae78138b46a10bdb21796dee. 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/QM6DC1908195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2820a2bec2332f7b05c6e00417c4eab4e83bd932c7dfc2b9f114a48e4db50798. 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/QM6DC1908196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2820a2bec2332f7b05c6e00417c4eab4e83bd932c7dfc2b9f114a48e4db50798. 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/QM6DC1908196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e82f4c21a4ae7fb153fa9194cd9b18e3e83410da2006d2a03a7f455fc746c9. 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/QM6DC1908198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32da62b6378d47ef5f09a9323e04f725b6af830c14a1c20a92604a87eabc8b22. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QM6DC1908199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6b49a500e7e40255ba102c8ecc7239c7a9eff05b00f60a243e45e41d0fc663. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:17Z), 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/QM6DC1908201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6b49a500e7e40255ba102c8ecc7239c7a9eff05b00f60a243e45e41d0fc663. 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/QM6DC1908201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f08aba78e6beaf794cf75b812ba795f6dd2a60018329d4df47a5518d368691d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZNFJ2118772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7352bdefb6b5da4b716c5fc6ed92cbd06f646afb7dd97aba875ebaca2e6f52. 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/USDY42321830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7a96d6ed913ba835656207b0d3e9ce5439bee24224dd1a61345608893c658f. 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/QZNWV2335882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75efbd1c421cce8782555d3a070b08d21e208c3c7cbad04cc57702b482ea09a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZFZ62406863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db92e19d512db7e1be288c8ac227b2a67bdeabfbf1e468d7902848f93cef51d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZHNC2441453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03e16d7214d00cf4d16e4a4f89a8731a25d74cad15d5c75bde6cd8123dd82e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BK4DA2413979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bd46adde81212d29c0a40786715e847b5b9777e3fc987688d4fdd6d60ae460. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:23Z), 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/QZMBZ2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c14ec09fc8b5157659993f86e11a950c4399fa9768debd759fbff07e884daa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:30Z), 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/QZHNA2558207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683c09c2610bea99872a06233f654e57bcb6ef7974881fc7b5a0e7370445be17. 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/QT3EY2582240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965ae1d9631dcea54085e95f954c6da032422c37cf8eb6fc430a149f015ea93. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM22438159.