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 0x03e7eeb5c00f06cd73ee7d17fc5d9e5464fed3c2c2d72beb31f178c70e6aa724. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7228dcf-03cf-474e-8f9c-04939b6228cc.json and https://artists.proofprofile.net/proofs/artist/f7228dcf-03cf-474e-8f9c-04939b6228cc.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 0x4289603dd73a4941d39ae37be602f1a5d27c01df4c448598c20e8c90750def36. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:08Z), 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/TCJPH2559947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bbc84b5a88bce9b6c9bd3291d0a19bf1196dcca8179df0b1fcda294d1569b3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH2559956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc3caf88927dd034847aa7e5b1cb3fc6b1425e68b7151f70624513f31c6dfac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPH2559991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5240d444b20d056dde8aeedf844276a4c97ca9d922847f24b5cd20852b71fcf7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCJPH2560010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec3c7dd70e4cdc3d6b40183bcdb90f7c2873571388bbc2ca20b2334cb76d506. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPH2560016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8016eb00d1d80360ceaefe7a481bea1acdff217adec34d175a829e7bae3c36. 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/TCJPI2514577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096b94b9f81263ecb44d59267f02e46d227f384feba40578109dfb5c242c4ebb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:25Z), 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/TCJPI2514579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0801dde5d4c33a8c5e9b37d48b18acb9aaecd7079ba80c4c63c5f646113583c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:39Z), 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/TCJPI2514581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7fae092b6f852d99dea72d57d86d507b772f1e7bd7dec68b39f98d92c554f6. 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/TCJPI2514584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88131dd77a18739fd5c4549a3e889337b7347c2050f69d508230ed9e7cedae3. 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/TCJPI2514585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2d59af69dae4fef1f42717a4b6f2931f98ba9f1a2ad47460d3aa75e024fa69. 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/TCJPI2514814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc606f20ed8ba4c1a4789897dd6abfca073264a48b68f4b9cbe15e620d4bd88. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPI2514816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36706a1bf8fa517c36cd4e8a0fcc00a7de44bbec4f8705902509e7e47d5a88f0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPI2514831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c4c22351b0a789340be1f52ce958b358e8ed0fe2943387c0817aad983cda1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPI2514925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9206f8d621a34a177d7d1994675ba0fef265cf3c040f45359a86f6b35a8d0bc8. 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/TCJPI2514935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51940d6a20dc2e1ee4a937fd77bcc68be60a32bdb041ee1c837e0d5d81886980. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:03Z), 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/TCJPI2535564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6c17425d0dad7795b3bf9e1c1169d7a942ee62482ae067a6186c54d44e3c1e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:56:36Z), 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/TCJPI2535565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c15cd774a520418eff73b7ee30a9e2d6a5a8961acf1cd6890ec77b3f8613a7b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:47:01Z), 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/TCJPI2535567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e665a21b881c8184773d36f2090a50b64df35b6a4d2780b3d9d49c6b995ddc7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPI2535569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88401224b8cc6a423e45b46d114e6dcebf4884ca5e040e648b36737a92cc6ea9. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:20:16Z), 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/TCJPI2535570.