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 0x7e894296bb5e87d0c11a33aed75264fe55d9a1912d1bdc8a1d81520c1a8aae39. 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/7d39226a-32c3-493d-bae9-12bcfd90be61.json and https://artists.proofprofile.net/proofs/artist/7d39226a-32c3-493d-bae9-12bcfd90be61.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 0x6cc10dea869396554e89035871b88b2ff859c5ca4add1f68c8ab2d15783f2072. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZC62022521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e19c1b1dfc5d940d860dc62ebca9998269ce9438c0945d817047ddca6d5aa96. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEZC62133927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e4217b4ec4171921f4ce55a75182a421e7afd491ea0dc6b27615d1424406d0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEZC62138168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff6b12665ec1103bbb0eaf80b9a27fd4d00405b54c63f00459405eb96330c5. 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/DEZC62262522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32b638bb59b173853fb19d94f4760a2dcb76e8e995d6599b98b52f925a868cb. 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/DEZC62202845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128cedcec2a280dcf402a2c0515dd6ee0ad74d82eab1b7c3de6dc0c16e596943. 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/TCAHH2394900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528a910315e96bee8e5a342807fd97af0bf8d08ad6a80b4c6fd9510b90a9aae2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCAHH2395294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb4b7e32e0a88d36a1b5d9678d3a9ce2aa0cf8516804e669b7a739e91204d7a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIM2405759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb572ebc9eec7f29f2190d1122954c2fa04aff7a2721b957c1172a9766f25d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:57Z), 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/TCAIQ2475200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373fcc890f36c9a07ac9f6c731300c0bc2247f045f4e47e0ec1a299b453d925. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIW2496656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f02cfd3b82060f5d534d998096658e8dc93e241f773b989fd85bc6b3325173. 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/TCAIW2496725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf20390a57a5a67e4fe138749428b88755dd9636e8ef4193e486830be2ea0d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJG2523800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee248ab0fe77185f98ffde88faa60cf9b95018356c9148978b0cc0d4c282c7a3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJJ2511859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d701520295e2b804c3013c36c2db75221a547f38f23d3d6fc6abcf213197c5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAJS2560858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf933734af04b9431fd553a3a5ad563e697d80870a788ca4383c79f604621a16a. 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/TCAJT2593492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc898764b8798a8c6ff914f3fc6d3f4a0f7e1ce1e50f2e28ee1c852d6fd9b9831. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJW2582178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06013675232edb9ec848e2d110f46735e4cb295d9b9b5d382fdc40e9a6f77569. 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/DEZC62358948.