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 0xe5432ec09282c7ffd2ee5d19fd2d445e25cae7c3d248ad1282e7e1f0e034709f. 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/882b0b99-b8af-4455-9393-4ac3c1d8d8be.json and https://artists.proofprofile.net/proofs/artist/882b0b99-b8af-4455-9393-4ac3c1d8d8be.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 0x4f83ff734f5a7af1c9332ae47f6c2a17ac3bcab5d778071da7f238aa90c64343. 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/QM6DC1745857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1107267517ce69fbab1c0550ddf6f4da1c408ed2594bf9efbf2e558b2fe388eb. 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/QM6DC1746113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf870eaf2adbb431cc4ff24a1c65c9b2bceb454829c5c412a897d13a8e81805. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QM6DC1746125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f444d515958812e5be622e75f649c93287639a2bd365a6ba67d77e36247c3d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:39Z), 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/QM6DC1746129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2ff0dda37f96345943d19dedee4ed20b147fd44d5dfce3e3af74b41b6920ba. 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/QM6DC1745852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d23ea8af6dfaf982c9733fa2fe7d5a29d76c8895aec9c090fe8909063e3cfe1. 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/QM6DC1745853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f83ff734f5a7af1c9332ae47f6c2a17ac3bcab5d778071da7f238aa90c64343. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QM6DC1745857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf870eaf2adbb431cc4ff24a1c65c9b2bceb454829c5c412a897d13a8e81805. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:42:56Z), 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/QM6DC1746125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f444d515958812e5be622e75f649c93287639a2bd365a6ba67d77e36247c3d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM6DC1746129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72793505f884b6dee16132e0500e26ab6ca377f6f2e5a6d1b4d6cf0788cabcc. 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/QM6DC1745793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42e6747d2f431832e7507f35fbd2654332dab009e212a1026bec4bf8731ec5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM6DC1745794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c025ceec8e64bb0cec6739b29181d902a2cd35f062b3358f049cf2840124fa. 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/QM6DC1745795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b564668b46add5b4f4380d48f365606796275396bfb42d587d7a3fd249c4cc3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QM6DC1745876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1263975885b6acdc101a98afb1fcf9d057b6a5d9250de3eae886205c5e9867. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM6DC1746002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918dfe86c401b36860f804e81a656a5732f44d5b0d9130bc45dcd66c05a5f19b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QM6DC1746004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f8c0d8162e3bf576d97677bf03c69a165ba84ddf3b3ae03b6e0539ee7d91b. 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/QM6DC1746016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c856082506ea984a35357a9ee590cf77ce76102ba7be38ff4650fa5d930a05. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6DC1746017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9f4a892d137815fbe4bcafd0375c12945734c1d9efce1af3c3f03b861d14e8. 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/QM6DC1746141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ff04c952208c111b927636f80a4b210d64784e106ac3f6e36ace3df4680382. 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/QM6DC1746142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d389008f2e1b3d70eb829c51b62a842d087106144730cbed412534be23089a0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:29Z), 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/QM6DC1746145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72793505f884b6dee16132e0500e26ab6ca377f6f2e5a6d1b4d6cf0788cabcc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6DC1745793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42e6747d2f431832e7507f35fbd2654332dab009e212a1026bec4bf8731ec5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6DC1745794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c025ceec8e64bb0cec6739b29181d902a2cd35f062b3358f049cf2840124fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6DC1745795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47df593a1e8882972b4ccaeda91b03a4e5851ed77e444e5cc6c52d70966371. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QM6DC1745798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1cb27d6d233d7a31199752b31ab28fcc2236d0cf74120fc11245183c64732a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6DC1745802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1263975885b6acdc101a98afb1fcf9d057b6a5d9250de3eae886205c5e9867. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QM6DC1746002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918dfe86c401b36860f804e81a656a5732f44d5b0d9130bc45dcd66c05a5f19b. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM6DC1746004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc676507747347f98c77997c3d4801af3fb669b8eef0e34114700b93d1bc3e1a8. 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/QM6DC1746005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29f8c0d8162e3bf576d97677bf03c69a165ba84ddf3b3ae03b6e0539ee7d91b. 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/QM6DC1746016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c856082506ea984a35357a9ee590cf77ce76102ba7be38ff4650fa5d930a05. 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/QM6DC1746017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25b1a97520f5cfaae59e16ab16d22d4654fdafb8f5b80a82ffde9b8bd0410a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QM6DC1745948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153720dd25b72fab98af7284b95e4402becb94f23bb5a8f861fa305bd71ca49a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM6DC1745933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a265d1095cd25abb56e118c506768c9df39d767bfba0c842d125356163e565. 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/QM6DC1745935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2961ac489ca1bc50d5febb2a94b09d5784186783641835cfd3f25be79a8f892. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHZ52097242.