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 0x4c0a985e02d20224bc20c92fbede2d514f3612d51bca23d05cfc0c32a95dd440. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c829a18-bf54-4154-945f-e0bf5dc9afe3.json and https://artists.proofprofile.net/proofs/artist/6c829a18-bf54-4154-945f-e0bf5dc9afe3.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 0xf153d661e042059e958454d5418cafa0950933b72fd138fd74ff91e763f56097. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:08Z), 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/QZ5AB2082557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb519db503adb37c37383122925c2861a70d685aac1250e45c77b8352be945cb. 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/QZ5AB2083703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0a2f5ee66d57ed284d64c7b33be7a097db1a56caa049efb2bfe28ab7eb491. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BXAGL1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a47741d6edc43dba669b104bfae9d44b88e8fb38c123a25ce74b8e0c8d1aa7a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BXAGL1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d0d9c3d89da10fb8332d65167a5da787c57ac6a68e2f4815f0633b2692431. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BXAGL1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177fff03b5c822c4d89a478b693252482313e45d8df7acceba70973b7d7e6eb2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BXAGL1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbdc48375e76649e1b7b52a0ea649a823fdb8f57959121d43174c26bbb01837. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXAGL1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a1bdbf3328e13cc2c8cee7f322b4cb6629feb28f5321f7fece00262e3c9837. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BXAGL1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f708d2ce6fc587fea48c63587ca49d2cf22287abdae92e3361bce7cd8e6cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXAGL1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24734daf6b70314268eadd58578e38198fc168af69c57e22699285ff35d4f74. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/BXAGL1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ebb94631dcf99690d33e3303fc23dedd9163dc4f0118984c3ccb378fe9c7a. 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/BXAGL1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ebd2df78d519eec0e547f23f90a1a4e75448567f08ccf87b5b4eea9cf0436. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:40:20Z), 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/QZHZ51943979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836aa25564d612304db8339ccf2ee1d542bee0244769904fd62c2fafdf405174. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BXAGL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637c610e481ae08275f7cbaa2bd798d161ba432c948327ae2d7f2b95b3e3368d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/BXAGL2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b3881ce01342ebcd7f3ef8fae8d6a94ab33913556fdcb94b1dfada7b0dbcd4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:00Z), 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/BXAGL2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8876d5ae0d441cd0999073808a45ab8169b8cdd88176bddce00707f1a9535a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRCS00700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4655c38fc0298655e239f5d461492e7f9bf99297476828e296611d3af40dc9be. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:50:37Z), 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/BRCS00700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c125e753314fb89c644b2a2288cc17f4361aa1a97fc3c27d0ff7715870f650. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BXAGL2300007.