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 0x4ec4e27ed6e9018a2ee482a2c7e4897719f0181ba32f67b320e581fa8f4e407d. 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/53f7a4f8-27c0-4657-b917-b31e13e440e4.json and https://artists.proofprofile.net/proofs/artist/53f7a4f8-27c0-4657-b917-b31e13e440e4.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 0x9923dbbad992f8951b4524319346360a1847a6dced9934826736143d4ecb1373. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA052214851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dfdaaa2b9f3e855b0fd22a2df3836d5c7ed352904936210ddb03e3d776adc6. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR10S1751989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43376404834582e00cd9911f8343de9ba199f969534a84dde9e0997d37bfd4c. 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/FR10S1751993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b2775343804c796170249c1b307fe2a7b04470bbbc0fc43dc3a2a6a3cebd1f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR10S1752004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32660e897c9cb1c1b2205335bbaf28e9acc82866521a42d705cf26507a0e92ea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:47Z), 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/FRX452307645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d1555fd4b3a09d43ce6be9aada7c900e2cbe0f41f4a5b774564f90629a1e2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:42Z), 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/FRX452307648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ca382309d8a231b1e114d63c36c6970a21b81a45513188de44d2bf810dcf78. 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/FRX452307649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde10b3aba4fddfb033f906b0b23808453dfbe738c5aaaee6763abe621bfbdda3. 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/FRX452307650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3625137e85db5159ea251fad785be5469ad3ea6705093f352f1718226bcfd488. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:11Z), 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/FRX452307651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ee3b426dd3a2dd5d506bace87dd0e3ad93ea3433fd3e5fbde3aa54f7863333. 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/FRX452307652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79399c60a8a94349d23b5969563f2efdec655347956a26dcf22cd0667469d37b. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/GXD7G2383824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1561d2c93c0d0ad451328d5c19086298f81342c67e985eecf8f69dd7a6dfc7e. 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/AEA3A2487593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35bceeb875a4be5ddc99b0de957f869a90240edf561f87a27154d8b458fc09c. 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/AEA3A2487590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4496d10f7030e7d1e85d353b6dbbaa4a9e889cc6f8c6fd85a0b8084670aaf9fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SGW502202763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe577b78764eeb4ec88cd845401e12710c7979c88813f465753befce7496f0b93. 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/SGW502218744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae46abc584ed8d943bb41f636568e351afe4f61683a4984db5f3fa1bf8cb1ad3. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/SGW502205677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc5197ac12b866bf7a7b0f3defd0cd9d202299cc9ccdc5962abefe477a9c4da. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SGW502275725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed80d057695c23c80d9fde0502340e6cd8ea457210747fc73b53cc26b3287755. 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/SGW502254548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506a2c00b72302a4bbb50940433a0dcdf2e87ee631090f51431f7e377972276e. 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/SGW502231900.