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 0xabdcf7b8ec98523610a5eeba8b3e887c7a38db7947bec79df216341b8ed8777b. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19a8cb90-106f-4a61-bbfd-9110d788d888.json and https://artists.proofprofile.net/proofs/artist/19a8cb90-106f-4a61-bbfd-9110d788d888.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 0x33c3ce51ce244bb3012bd2ee8cb6c344ca669ccb271f8d0e2dcf0efefec269f5. 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/QZTVM2423894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb00495b5f457c4f0271ad19e4240886041293ed86f1f008626d18eadab4b0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTVM2423895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d731ac8e9e39e2b696975fc02cdddc5debb000b50668475b63dac4d8369c78f. 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/QZTVM2423896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99f0d96a448ff464d4253c7f05fcf2b629e3a381b2385037f0c385f6113861f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZTVM2437227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4845be057d1b643e4558569599961f6abab4b0613e994100f39fda8e64a1c8. 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/QZTVM2437228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaccce0db21a3da25b0cd3a3096a2e6c6b7a10551234dc921f05ba36dd19c32e. 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/QZTVM2437229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1be0104fdfa5a3580753af0f1128c8c474801f33d371f227c738211219a69c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZW9K2447392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaa7e60fd8c741485c8b5e5beaab914db34a5175057d49a5c92e1d5d3307476. 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/QZW9K2447393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c15ad3a6b51e239d5f0da1e21a7f60690544400566dc9dc871d81a5920851d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZW9K2489185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc066c7fe465d6f6e5706247183dd23ef35e20e86ce41e56ac27f732c46a76. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9K2489186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25334e030e627d47017ebcfdd651fab7626fa9997b19951b53cf5db0f8f4345b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZW9K2489187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930711d28a19f279dffe253f0b2e048ace11d42a3f2a3f1ab034b81a398c8d80. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9K2489188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390116605790780390c18761d028048f7aec60071f3a7fd870a989f032448a5e. 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/QZW9K2489189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641eb4525e945ce9a6090a21b2ac3f35d484eb8b9ec0e487bb895571a9ecdbfd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9K2489190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1cb15f51c0e86371a04a70c154bd4c4898555a2da62bccae4768a8ace0de64. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW9K2489192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d4b320dfb47959d79b4316d91a02a9b58504d822518f5bc109e6739b0830d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9K2489193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177c92a01214ed23bf294e5d2b8590cba8a56062be5eb0d7223f35762f82f83d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9L2407127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a025d8dfe0b451ddcfd15fd848e178237b9fa798e3ab41862926b54f0f2db8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZW9L2407128.