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 0x67ccf9075ba2565111a5455cadfb8c808bb53a7e6ff9c0bc5429631d0f6d631c. 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/b34f2e40-6c6e-42bf-9e32-b8d92da9a0c4.json and https://artists.proofprofile.net/proofs/artist/b34f2e40-6c6e-42bf-9e32-b8d92da9a0c4.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 0x1b9743bbe92e09fbe3ab147f5af56e369953df6750fc0161770edf6bd0b5c013. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVEM2357314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81c8bc9a4397adc49a8e2aaae8d5e310ff8b93a26cd57bc1842bac383fdcddc. 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/QZVEM2352456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bfa6bf12b263ff390a13c738c2b73e985a29ae96ea3497c37d6a56c3e07ae. 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/QZMHP2363604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3135a12b4f7218c7661b16348f048b4d38fc7111ab12410e41f529605f477b. 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/JPX422400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34605c568602f7672a53b474ab32b3adf6d997f65ced3222dbb3c14fad509166. 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/JPP302400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bd40170b92350179c6d6dce66558fee1b8c9218fdbae9e54631c9ac925e2f9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPX422300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41a6336effe580aceff44bf68d14f6289b56a3940a0f20aa4a853cb5543627. 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/JPX422300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4bdc61792523250466ddeb57601c5502b0e37397d35c9da606f7db2246a57b. 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/JPX422300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14195beb4dddc5b4297d6c1ddb6a5039016d444c0abe4062da6910b3abd81f13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPX422300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dae1648040de62785fce48da7383cea32205c6a3901b745aae677c36516630. 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/JPR501929532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbc49df5bad1fcbf2dad32a43f1686ecb330999606390fa2e9c92285063e4b9. 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/JPWP02171068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef77a06062c7e7934225bd06113ec75f47fdbe31ec9bfe4aa92d0c177b1ccd1. 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/JPWP02171069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020e79baf3ca087b4f45fdf8d7e569ad4e77ddf6b4c08cf4331470cc45c6c443. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPWP02100765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafef0cddf6c2d4f8b1ccee00379d1d2ba45a169e3ac3901b643b9393686397c. 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/JPWP02171070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32b39300bf2243770d4d577bb942f6c5d970e66f3a11f0a3f87243219e4e174. 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/JPWP02100899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b4b01a7fea961e44cda462ba0d486aabe887e0be80ace00ea7ebde9de67a1f. 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/JPWP02101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d18f89e8b79a60f9e04a94cbb2fabfd86a54f3b2a161958bd7069fc1949112. 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/JPWP02101401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbc49df5bad1fcbf2dad32a43f1686ecb330999606390fa2e9c92285063e4b9. 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/JPWP02171068.