1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x89e6ba587503a6a879d0e9a33e44cda0e22c6d17fde0d9a2a021b0edeb5c523f. 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/6b975751-9b1a-460c-a618-6dd873f23a60.json and https://artists.proofprofile.net/proofs/artist/6b975751-9b1a-460c-a618-6dd873f23a60.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 → block OTSBitcoinBlock must exist at that height 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 0x0cc6a1ab5a39780643aa4258fc1d9e6327edc3abc5b4a083bd1d6c2c1ff34140. 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/TCACI1581247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1916af76df27adae7117432ca4d04b4af79e346cd4c0bf74c222f18411b9943c. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/USC5Q1200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1a396db9e314aef86500c9656b90f009d54be69404f44aa194c2640d6f377. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USC5Q1200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c92618e804fc1b0403ace68bb85db93bf82fdff437e11b2f525690bef4eb92d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USC5Q1200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee01aabb72c4db2c99ef252a8088e3661dfc43c88fffc8c0efe2a95699bbe9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBGEY1200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e34ebaf1d3666665d91491fd81ab4c36d9f6201295f0bf1d51fed0ee84592f4. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/GBGEY1200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eba4d76a18d26e372709ef0ffd2837f88dbb3f4051ae43cb84ee0b96d2fa35. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBGEY1200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f900a6dd39bfe3191f93c03e6bad81c06b9c881c5a05850ca0d7afed3469865. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:09:37Z), 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/TCACJ1515135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f3bff03ae4f949f222f44ab363dbf089b3ed7269233aa8867459c8ae1026a6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCACJ1515139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355072cf7e780a619cc821ecc13c872bb60e69faea03d39e9cd5a8b4fddd0c92. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCACJ1515141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69f22416b56e66a3b4c6a178f69582ed0c9ede54f4d0a017cbb1fcd0d8547c7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCACJ1515143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc478630ce85871f387c7107e7adec94f253481c218568ec37c57bdeb1c868d4d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USEP41526001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d880208701cc7483c5d138b131c6cc9aa38e55f66772da1089011949ddf682. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USEP41526006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b08319737f5c5ec75a3e0833fa941f66722671a7d630e8ae241dc7b90728c4. 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/USEP41526008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f8d3aae9baac9b6411c7d1ca02026e1a881039dfcb1c797f947105a35b45d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USEP41526009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307442fcc9946c12e1886fb204e27e8cdb8bd68949e6369101a5f42a0c7e3e21. 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/GBCFB1404251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7886160d84054affacbcb0c0ac23c371910a127e163ff226f050a37103fa6697. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBUM72100886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307442fcc9946c12e1886fb204e27e8cdb8bd68949e6369101a5f42a0c7e3e21. 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/GBCFB1404251.