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 0xcfe48db984a75f6e427a49b970865e1f3be6b31b61e5eedfec627ee124f4045b. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30131468-f38b-471e-9417-d1aa57688956.json and https://artists.proofprofile.net/proofs/artist/30131468-f38b-471e-9417-d1aa57688956.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 0xc0875a4fb7766a667b1183824be3dd8fd4f7d3d8f9ccbdd85d941241bd03587a. 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/ES5302373315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4df7242288505741b63951cb9444de53ff40f9f1f7e7fb6ab10e20a5f625f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5302373314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3451b5d3c00d842cbbd66d7130197ae552e32533865ba6c5572a6d399dda08. 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/ES5302373313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3f81e033910ebf1ba1f3459554687d2aeb870dd9b99dcec09ef3c9458f20f5. 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/ES5302373312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3fc317099fd917d4dfc8dba3537a27c50b353d31a49b12e217705370e56d92. 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/ES5302171147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df20cfd66c343aa324e4bfe13dfb8b5f49a05e96c671c0bb1b417640edc352. 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/ES5302171148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcbef74e636126e5b468305deb6adf625949d1dc09a6438e1208781d9bca4cd. 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/ES5302171149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1d445c6e36e40662f66f7667c7b3bc73d42584bcbeb06c764a9cb66095be6a. 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/ES5302171154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3f85ff61bf125ecc2354f0d450dfac5fd3fb42ca780e29e073e04a0d7c6c3. 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/ES09C1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d665b675db76959789d1fbf35cca5cba786458300df726e297dc2b488381ea. 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/ES09C1900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4ef3cfadf1bc8c03a5119f53bc77b5af0688b24bc88aadc14d3e5d5cc278a4. 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/ES09C1900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa277615cfb7326c212dbbc2b99ee04c808ec9bc74d192f1b85dc9d164487d6c3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES09C1900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d99cfa46e5e58496e3b45d96d4a856999e73bc5d9f8e88c8f586e2487440d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES09C1700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f079acd5b4f474d36002375c0365ee127a733d4009194527db606e142d9475. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES09C1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9e3057e66ab40086b9392fc806d5c0d19a10984e71066fa2542805c4bbcb4. 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/ES09C1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fca91a16f6e940b26020e3df24e7da343e99bc3edcd942e2b84d7b40bb3cdb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5302373665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4df7242288505741b63951cb9444de53ff40f9f1f7e7fb6ab10e20a5f625f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES5302373314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3f85ff61bf125ecc2354f0d450dfac5fd3fb42ca780e29e073e04a0d7c6c3. 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/ES09C1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d665b675db76959789d1fbf35cca5cba786458300df726e297dc2b488381ea. 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/ES09C1900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d99cfa46e5e58496e3b45d96d4a856999e73bc5d9f8e88c8f586e2487440d. 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/ES09C1700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153c8f765f2eb597db7e08219f535ef2197fc3af7ab31272adb772f70bd07482. 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/ES09C1900103.