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 0x459204a6b968d54ef3c7560811fd875fe709b25c767ea9fde00bb5ef34eafd7b. 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/58df24ea-6c30-48cf-a344-48a01b50d5d9.json and https://artists.proofprofile.net/proofs/artist/58df24ea-6c30-48cf-a344-48a01b50d5d9.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 0x566984b05b3700ca480a2f511cffd4ac1f2ba756378f9974799258421394051b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR96X1959638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda3e786c3348a216527d92112c7434dd7b176124e2171bf7b7ef09af7ba9e9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:50Z), 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/FR96X1959640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69386a1b6d4654faeb6e09e3f2e9c565d378c72439236f869418722e1f1a76b8. 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/FRX452042273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2c165fae93597929f60f6787d9f2e667635b424499ad117fc6401497967fe9. 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/FRX452042274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee35842e62ab3c6125dead8017dad6cb7670707499f59cc9dd05c8c85de0e30. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR2X42110403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075260e6aafc2cc0bb4e7761252d6ad79fa7c3f8230062c349266259979414be. 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/FR2X42163749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3258254be03c0d687d37c05cd5fd128e203eb2d936aaf2f3f7da93d46668812. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FR10S2190660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0631efda9767708bec3a7b8516e00e47e54a42b19f962a78b63b9cbdb2c04f5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:18Z), 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/FR2X42163754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb505aa135a6906e0b85c73b51396583c925a1beb669095e398e2df89557921. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX762124914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca190f5e13cb63652ad1e7aa09c9b91c2a5171633043643b263f880dba81ec33. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42218270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee81688a64070b8cf0e5ac16e2d7c8965e022bca67ed27e7cee7dfbbe1d96d1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR96X2286679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc621d2f48c02e6dc84977b1af0e4a5d50d36207d19403053ec188d689bf6bb. 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/FR96X2286682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb78ae1b7f6f00e1b58d028d00ef3ddf5cc2297b159e6dd3deb4805480874f6f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:25Z), 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/FR96X2286684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9c9d1fbd5f15b4739ef4b538d5153544d882b7ae641d6623d9f72e9781ecab. 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/FR96X2286686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03888c8cf57130f2401d8754a82da48f66409d8bd6c1d317727f8407d8820cdb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:13Z), 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/FR96X2286687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e592cc3c40f929f288a2a2885bb72bb719072bb8decbf925fbe8b97c8d6cc3. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:07Z), 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/DGA072288312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ec92d054d2987bce66d4dae1056e96236e44c7e59e9ccf1ce0c6ff591f4b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA072288313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432bb8801f1d55f694f5136e9a1c915e85fec2e79c078897396e319a4f62c5ce. 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/DGA0H2319292.