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 0x547d724764c39b90b69618957be4d184ee069d06cf35421ad0e7dabbdb469d35. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81fdc925-e869-4046-915a-ac738207cf95.json and https://artists.proofprofile.net/proofs/artist/81fdc925-e869-4046-915a-ac738207cf95.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 0xf83fa5fa3d7a546cbb00165a8bf81021620e62f5ac6343acc6713bee566e2353. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKF731707112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8536b9fb4511ccd72c806c06739574ed1082a66c636151fb6d1ebfb7c7de549. 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/UKF731707113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ab5637007734e06677972ced53602bc19c5f484c08d502d8e30895a6e382ab. 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/UKF731707114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb9e23e9e5208392ae377fa19b8aa1894dbb9889cbbbc00853f1ae30511226c. 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/UKF731707106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e3971b1ea563455ca987c35cdae32ed8c0ba154c90a5fe13f8a2cc4f48681. 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/UKF731707116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae6dba16636b624368730ead47ae4c0e08c955daefd91b99f1fba638372cfa5. 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/UKF731707107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd6ba8924f2d91b8b6335655d8b6d01c55e1c58557cf844dfc76f8f1ad3ac32. 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/UKF731707117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a020e992c7cf3a4c6dbc642ca78d2e5efd01af0e9d915056b76d955d743b555. 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/UKF731707109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00aaf7b9d09e832eb329c6917097e62db9ac74a82de3f23f84a6cf33396efc5. 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/UKF731707120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80531ff55095c09f5015f96b122b0db4503f2956cfec61ab257697e35a368e3. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/UKF731707101.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c7b1dbf4ebc7193f2939ebdd0beb6331a32531f7229b3528408d7f233abbf. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/UKF731707110.
A Fool's Gold / Terminal Humor - El Revengo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b2eb2b1ba3a554331ed0b4873866fa7b4aa5eeb58831b4dd49ffd57d1636b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKF731707121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefca2e389b33539d84bee0ee47163c039570e6597f0a2087498d80f544500a8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UKF731707102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c354e9f37dd81980715dc22cea885e73584320ada5860214a7f44a106423adf. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UKF731707103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446175d7bf4a3ed45e02cc1caab4f74ebb171ccec2c4702d88c62b157b6d740a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/UKF731707104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5931789b47073f2e1ee4095b29c9b3c5641f3abe74debc08e76232b88e0e3e2e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/UKF731707105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d00799d0b1d27214648c036d7462547cc4d79260f8caeae4693fceee9eefd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UKF731707115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a47e1dc7ed874552ad6be6a9e7a0891cafe3b142e75123aa386edea9bd18c88. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKF731707108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b05135b75cc3e1e073019a7fcb7ce7616e1e5d1ac8e4f9655fd6db18670e6da. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/UKF731707118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b160e53413e0b8a644bcb8458963b8213163b2cd19abc038a22c2b1c8382e14. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKF731707119.