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 0xd45fda475885bcbaf733f92ead43e91144a6e0abbc9507da4e2bd1adace7fb4b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7163e276-75a4-4913-a342-3b187a7864ac.json and https://artists.proofprofile.net/proofs/artist/7163e276-75a4-4913-a342-3b187a7864ac.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 0xae95a02c651200a7035b154eb23c8e046b0a0dd3fe57717b7932a3c2f8a1c40c. 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/AT1962500452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb691cf617a1101f4d4a94f06ad539a3b1b74373253c305c7c29850aa37d1165. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AT1962500454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd5847448592dcc6c4d0cc1409f748e6b325d9276de3c463969e683d7ddba9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/AT1962500455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6168078553e3b72d97eb05a05506cd6c4b6df19f5a284b9e0426b33bfa6f412. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AT1962500456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1129d69abcc993558bab39ce915ae60014ef7a16c632b7f78c0527bc6a789c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AT1962500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d1ef9fe3caf8f35dc11d671d64c4a5dcf15cfeebb673b61f51e0e8d5c780a5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/AT1962500458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2fa87ef8d3241658c413e0c70ce8c9c3f521eb72895e0c6a5eab305121ef8c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AT1962500459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e695bf0ff4510c204df28739f9463fb1bba3a2c852997e1c4aef4e6a2b60fe. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:53Z), 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/AT1962500901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296dadeb0ee87dce9e9908a0ba651d418305788d9990f6931365ee383ed82713. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:43:32Z), 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/AT1962500902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34238a19f05cb49cc90535fb20ea2abe1983c8a1975aa09916db3fa59a1e8f59. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AT1962500903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69222f7c477322d3131b0833acb8bf6d45ab9b1b0897f82726836e8121aa59dc. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/AT1962500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfdd84e6466f3a09f6e3254d8752101d22e8541c06164f34b543861592ef99c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:40Z), 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/AT1962500907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bcd78d411510eec2c7b00eca169b38a0f3a8a52e77c210a2ed485ab2b18b9. 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/AT1962500909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c505b1ec890952dee98b8242aaa5a449ce1476d71f7747235a551313f59118. 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/AT1962502150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32efe8d8489f23dc9acbbfcca17e5e6b165142b885545567928be9908e7f4d80. 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/AT1962502151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7c55e882b6156c923d0a856560c3c7b94bd924415c966f08f28ea043897603. 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/AT1962502380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56029f45b287dd30a93967e2355d6ef24698d366160a970bf486be3df7a26fbd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AT1962502382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965bc7d6f1cca4d31abe0f2778768adc21c1f745fa03b59563ceeb85f66e6dc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AT1962502384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf119af3b6fb803f0fe85a3d050329bb855f23baedeacdf9555f61332757c9a9e. 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/AT1962502386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c60c541382a7ca2bbe4ecffa466e6ca62b0a7317f7cca9a6799813ff0bcd245. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:53Z), 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/AT1962502387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677d9de2de91b0c2447df85b7346f505cba705a21b3a3e831a4852c9771bf8ec. 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/AT1962502388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e06dd479982a38b164d41ea4d448f817479e490b0c54e8beb24eeab571717f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:02Z), 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/AT1962502389.