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 0xed3d63b712215e94f358b20579a1b7c75f089ca9ee7f078162e49352a8e7d57a. 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/fbbc8b17-01c5-4c16-b6c9-7b18687c14f0.json and https://artists.proofprofile.net/proofs/artist/fbbc8b17-01c5-4c16-b6c9-7b18687c14f0.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 0xad304da0d6ceab639880c29a91d1a2720eb94bf92ec9d13998cbf33509248671. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/US7SF1455597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18bdcae8a92af569abe84ed8ac55c1bff91371fe28154ea0fff828ba951bba4. 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/US7SF1455599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e01c5626c41edcf5fd9b4c0c92bcc9990a68da7fcf794d06f6bd9b2ccbd419. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US7SF1455603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc526a9fd0bdd289fe68188ee5990511c13282d3c2be04bfc81aefaef4ba036. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/US7SF1556081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24091773d163a7ad4d586fa2c317a266061e5ef8700088288f23e80e15d74f6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:44Z), 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/US7SF1556082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e296cde883748c512841861b86bebeae78d4fa218c44ae5e66f92ce873a403. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US7SF1556083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc60f80624f89578f596e36e259bf6ceb8670e5a1994fcca1bff3186c4e7a84. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US7SF1556084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6ff5a5f86ef245889b955b8c3341551dbec0070341512af969b6fc1fcbb6b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:13Z), 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/US7SF1556086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6335f69e1e94a3a3d2075ac302c14bc1d0956da23ecf5552d5f80e566dce33dc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7SF1856715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04dfa786eb61af8820ddc45fc75eec0c6d449b8dd8c58e71e94f0f6017f7905. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US7SF1856716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883d5b6077057fb90b765551c8905aec1c5cf469c616e7c1eee7f209ccfce43. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US7SF1856718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5930bc8dd6b5a76cf53c4750d286041324dc273042705e3dddc95f4d43f4b6a8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:31Z), 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/US7SF1856719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813cb322c397a889f4742d059b4abe9a6ba5f0ea033cfc6594d11d62a45ed835. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US7SF1856720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcde8d40a7d759b6ca244300fd88726ab3f8276025ee747f0b4d96c11fcb53b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:55Z), 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/US7SF1856722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336ca13d64e6425634db06c3e465fe4e77377205a96d8485a0efce45adaa9797. 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/US7SF1856723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abc5d4ef90db9047a9ce13510bb773cd1429692d04cf6411d0433c5815bc406. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:40:22Z), 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/US7SF2257241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31422e64faf607d4a5621a1d99d47c6a590718af5d2e8db7242d04c025cb8162. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:08Z), 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/US7SF2257242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f9e0fa4de130121f09cbb4b15fe2ff119ed197bf257318d6b7ed9434484bba. 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/US7SF2257243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3370b0cc1bc3284c0e8fb530248632a5fee724356764e8647465629d3f55e970. 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/US7SF2257245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa0fcc89a9dc04ea2c34a4326f6e940f206ccfec8e2a6a1652b7b99b34959f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7SF2257246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e54ed94e90854c65731bcd88e20cfae045bf97badf25890759a6aef365f8d7a. 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/US7SF2257247.