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 0xedae84d0ed002820b7c08d934feded49e8c9d00d2255434cec23a3106ca41a36. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6554e53a-2b86-47bf-b4de-7d1ed41a8053.json and https://artists.proofprofile.net/proofs/artist/6554e53a-2b86-47bf-b4de-7d1ed41a8053.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 0x34998ba43e2eb1560dc6ecd89b325a0ebebd062cfe132a5c2240f2003e3f17f7. 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/DELJ81621902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aab8d2d5bf0a0c9704735efaf0677b016f294d774fbf9a7946dbe186898971d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:49:36Z), 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/DELJ81621904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af0abfee018cfab93ec315b20002b188bfbbcfaad74695a9ac55926e44cd51. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:05:29Z), 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/DELJ81621905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340bfbb36118c6e79e8fa81abede5eb643e4d778bb45357b46e462a76bc6e88b. 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/DELJ81621907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f597a0ae4f35b24eede8f52e74ac99d4aa4f6c06523cc2642b5079989b7c5. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/DELJ81621908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cec6c8cad1ef7e70741132fd0cf3a8d05d717c66191d08caa2843f04babbcc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:45:13Z), 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/DELJ81621909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed850cb59784b60ce3535d0630cd39e217f9bc1321fd0cab105ab2c4fee469. 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/DELJ81621910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803cc219d3ba17b39125e5bb23141494998076be82ad697cf9865e278360824e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DELJ81621911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f6766224f761f0d689045ae3169c38f44e4576cc63ebec1a94e7ff801a2f7f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DELJ81621913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10166d5ae19caf388bb42e12c785b0f297d36c58ca652b76650c6866878a03b. 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/DELJ81621914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d309df308a45f3aed83944409fe49fa4377982fdff5db0ba4a194ba405fee. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DELJ82097558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692c7d259128a0e1b941c390c305b39da781c39f17362f7c6df70a393414e5c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:43Z), 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/DELJ82097559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0edcdafff59d9c0653c886eb6249d512a5245878af3b4c04474a2b3e7011e6. 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/DELJ82097569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7c5d2268edb56b712e43259370e6e6a51ea8f2ff2199c9fbfea4d772dfe3b6. 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/DEZC62257507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e449f9d0a5dd4bf3ad294d85e694f7298f96fb10f1e381ac7e42c52fa8a0d5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZC62291507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4135415e6279bac8cf0567b02fd4771dad60daf20b0a95bffc6a2441219472. 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/DEZC62327144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab2ac686d7e775ae9235e21236a52172ce3bda09b196554b474ca418a73393d. 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/DEZC62213981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ae46a210027d34139bf447565092843a036d8a0b66ad2341cf8d3c8ce3c37c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEZC62327145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87049a8ce03db3cafe38f1a1256763db0b02540a9d22037c6a105109e86f3e9f. 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/DEZC62269765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de17d02a106a582cf38982f6c6839a241627de51636dcf50d455403e72f33b5. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEZC62294627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427b822e062549cb7791a9fca953f4b7624d43ae65ac9a3411158c75ff1b60ea. 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/DEZC62327146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2506e8e8616ce64cbe8a78bc7293eb766012436ebf3dc559a7c84f1d283fb0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:41Z), 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/DEZC62327152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bf062261e019eda0ef34a7df861f172249a8a20bc209c2a552f2e3b8945ff2. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T12:59:56Z), 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/DEZC62204200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525e4a08a75d3f71c7ea0cbdc6f631fbba655a5761c3ccf3a429a4f5ba9e1214. 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/DEZC62444536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc072bc0b8433a326ed1c8eadc936b8d0f162bb1ef83cd94eecb868b0b21d7601. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QMDA72475954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0568632b8d21810261b2c7e90b795e0f1ab9f45f551802bda0eec825583d177. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DECM11524922.