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 0x1b796c70b2e559494ab25a9a48caa60c092304385170a7699ed3b8d834fb0602. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b52298e4-7640-40a7-b8cf-49417346a8c1.json and https://artists.proofprofile.net/proofs/artist/b52298e4-7640-40a7-b8cf-49417346a8c1.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 0x6ea974c6db47ce755b8e62d93d1e24179752ee2e83c343ddea10a6529b148833. 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/TCAIV2411003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5660362624ab7c0f7a119c46e76a6064f6c33abcfb1045da1c1ab47942195870. 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/TCAIV2411018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13e5408d1ed8ae37ad497923d7d14d82df7607775961bad028adcb8f2d18506. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAIU2411036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c05919c65529f18afe78eec6c567265eacc45e766af3627097f04d1e911645b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAIU2411052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d67599c1d96ed93ebd4202a9cd8d9d7faa47d0a0effd1dd232b9266e8e691. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAIU2411081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893bf0ae2076086b0b3bee73a6f3a9e658306abfef56f10a03718e106d77c5b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIT2402418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f5e71ad88bf6fe633457835896d0f7528d0ebbe97a30e0b350124e9fa0dea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIU2411108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc7d8264369be320acfb2f7ed7ac9a9c1dffd6c860dfa955740c1df4de8dc5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITIWE2301195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7d08ec3341542caeb058a95c5410aff605d0469ffd2077788e3ac378e4a28a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITIWE2301198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d4982a4fc57c3da219bc1c7c78929a07780c1459b8b2f3d67615a5e1c04461. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITIWE2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6d360d3df2ed0f21bd7dc241bcc1eb5f5e1451cfd0d63dbf86da8d9df496a5. 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/ITLGE2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a678f942ca35e4e272a919ca1599917779d9b5390563b0fd680bcf680e898e. 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/ITLGE2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893bf0ae2076086b0b3bee73a6f3a9e658306abfef56f10a03718e106d77c5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIT2402418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73990a05e24afd83e7b3acb1d6753a7f45a6f75bf6ee8e73d701dc3f708ad0ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITIWE2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a7694d487f0cfa841121dd016cb173a95b330ae8bb706d9c89055b7fba9d99. 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/ITIWE2400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6c5da650cd56fb2f08858071bc9f014750b2af745c173da6eaf449b359ea9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITIWE2400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5a42b77639eb02d34b92fb90a902dd6eb572e11c10e285f58611cb1c36246b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITIWE2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5cce4c43414789e3b894f9621296ca5c4350e7c941252b357a6f38a66c10f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITIWE2300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a65e01c8cd388aaad3e44ce1446273d24db16daf364e8dd4c3d8c6f2f53fe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIF2441025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7d87661f96b236b61f76436b49eedbada5adf4f30bee59ce487ae8620eb0f4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIF2441061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afd1843e4d223f320be49107b301718d220dced448797f6469eb7f5c04f844c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIF2441182.