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 0xd414031a773da0a949a792e67d4053fa5624498d0de7f80286fe0b0ce93476a2. 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/00db780e-ed3f-4ae2-b786-cb7c1c095ad9.json and https://artists.proofprofile.net/proofs/artist/00db780e-ed3f-4ae2-b786-cb7c1c095ad9.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 0xdc613a9b76da2309c2c6d84dcab7514ccc60b63248be47313d11640eb13f0833. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZZOPM2112463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7611fa6beb4714f9f4d35db77903ad0ea4083fceacf0ecd7cebbc055b806ecd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2319173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb656a909fb7b6a5187872a6bae17d537fe2f02aefa454567b918e6db77dd032. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLAA22100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dc6199cd9ab616c3eb1182e0dfafe521c6b14b55c67a0b40f672a4af93d8ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2401530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e85e36b1dde568dd66829ce9d31e9808fdf024ae9da6dc14138286327b93a1c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2326116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec58d86e25b02cf9bbcfbbd1afc9616875e9306fa6c74d785bc2d1b2bec6c20. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UYM122302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da5383c951c7a028d8f6de382ff341cb94cc92a832fe9a0b03e38e1967b0ac5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2306280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabde986f9e29f3d519a16db5adf89026c747b0bd8e3298896f6bd856b5b3ded2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2206710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e42c02f89da8f008f989c8b9001bd84326501c258ae1884fc17676333d3182. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZZOPM2230695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd803e52a0b73282c1a9596fd71bb3af3e54cd1699d3722929d47a4e1feb51733. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZZOPM2119227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45abb5b92e5d7678081a71107905a5ea22e1ffb72ac3533346b3f31f2c808cde. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZOPM2107946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aa001b3208f59db0ca58496704ab3582e2d210075e3479ebfa7aded3533863. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5AB2118271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3c55af8728d5198dbaf41916417042377d23098948e48e19277820ce29c43. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UYM122003555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f01639f4ad6e62d0d298710ee6835a6a5b221bcaf48d7e492851a3a310e848. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM122003464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acea8876474866cde790c14aa24578e092f29a74de96b2f70838c24445a534f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJW2051786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d278d442afc57d7cd4670b1744584820ae71a6002e79f45642fe5ae2456d8ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJW2016512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb9698c8a50c35e7569d48ffdff9dd9c9ab97149295581c4f13fc70ea5a43d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJV2079205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fdca36811ee6734e33b6b3b6fefc6aa1f233dc0f5834385a73cefb898e1b12. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UYM122002360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94afc03a54ae4622b5b0b274d80d3117eb2ef1fd66689efaeadd07ab3eb465. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM122003309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03ff85f4044fc9e758003eccc57a763e0970761fb08e47b7915f569633f3594. 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/FRX282028182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7fab762b39fe543f0c7e9ab84d9c81c4a34ea20944e1efe523f603b8709bb2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM122002528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf520081666111bd8a87a40b439b09e54ae058ef8a55dbc76c0ebca1d98f92fff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX281965224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feb1ea6ab81e4cc97e87568705da9c3711b3e326e93a5eac9d349c230130955. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UYM121903911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bc54232718b4a15cc8d727e01c9bdcaf9758e0de60cca2765d9b21d2ca551. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UYM121903564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8e5d9d9bcfe125d8f82114a704dadc7fffe1931fcf8d03af12c793d158b212. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM121902800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f7906a3a34a1a28d56fd5457fc0d24b5aa6496c426bc4c55594bd32f8d1dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UYM121600631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d17667c25de64459f7236d54aa48f8de9eb0cc0bc1bff268b261400c8a715. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM121600630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a38b11af362326bec17ff8294ed71dd4d4f137e33d7716ea270e4bdb8e714. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UYM121501547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fff7bd51532a873389825ce9e02a397a3c2681f316f69c4932280bcb14995e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM121501548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ffcd5084ba21e234d8feb114a6e90abea7129b1828cb7f83438e9cb9271cba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UYM121501549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698ee3b314b913a9237c09bf78e789b9162b22c84b362756d8b4e3d3b9eea21. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UYM121600626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6d7a37cd6563dc6461c1a46e85e33d48ef1480e38bc430deccbdf517c28f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UYM121501550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c4082199dc35baab307e3f837347a7d2fdfecf601fe8b57f7a5d0b928ca2cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYM121600628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a0ef9e955c2ae5bd5f3b3662c87176cf22086092eab90052f90f5f7782962. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UYM121501879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1638c09cf5feeb06b771832499e164472beacbc9e9fc923678990a96b9abba4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2409790.