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 0x70889d204746400c1d74ba2fa00045d86596c0bd2220093aecde6460cee23dff. 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/3ae0241b-ddff-4002-a953-3ecd48235523.json and https://artists.proofprofile.net/proofs/artist/3ae0241b-ddff-4002-a953-3ecd48235523.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 0x2626c1fff0917dc1882bdd1b91a1b3b3a0e0497816867d235ce584a35c7ad0a9. 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/USDNB0958805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26fd1eba287ce46b1f2e0e711f9a7f9c785c3420383c498ccacd0ecc2c1d389. 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/USDNB1021302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed32e5693be2f2f23bedc9cd02d2e7706d91a9965710ace8facbdebb599f676a. 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/USDNB1021303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca2509f48cc88b1d557ebca4fc4514142322883b13e0fe55b982643505d606. 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/USDNB1021304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bce93df416293c644d5c450a2419b04248557db319f8eda96c0f65d248b72f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USDNB1021305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe672ca1ec063ee19c058443fffd0f05b4d64e0eef981f90ccbefd2f3e652a5cd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDNB1021307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df2c66639fe6c55206044049c1b764105f0b3ae8e95201a09252470b397611. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDNB1021309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd28b8e5a11005934790f426c7f8a2a7b49407068b108739f65ceddabc24bf9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:01Z), 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/USDNB1021310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5ca7461a60f3752ea1c2816c6aa3fde7b4fb59d8864909327c9b749b3bfb37. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:08Z), 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/USDNB1021312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd370790d43f06b34457687918f99623392102a6fc7d118eaeac8d54984c7d9c. 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/USDNB1021313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa4ba4dbd5ea40af89d98a9d692f99c335256e062a7851273c4127c83d24ca. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDNB1021314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a48cf0d1c57fdd36426dfef396856585bb61001c3d457dbe2c75b8a38390db. 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/USDNB1021315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048aaf2d9e6e258ad34797e504d9e92d7d580d31e6991b168924a7067ae0a4c6. 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/BGA471400848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38b5dd02b97eab69d1f18a7a41b6fbd69aeb14b5147bfa2ca107406c5c957c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA471400849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711025e45efe62bf12a2ec47e1592d7c45c6bef35e7035fe65a3ac5b3d5b11ae. 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/BGA471400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceca62ff2108b7637f0446bd675f6d65bcf0910b140bc264b9bc1f5469826ff. 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/BGA471400852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bddcc759df5217956c483bb57da581d2d357bf98e07818428a58f8fe1c734b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA471400856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f9a686694cf44d0eb33c82aef0a2445ff175bba83fc1c7676ecb0d47799906. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:00:17Z), 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/BGA471400857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b24f7a4d13f668e8707333633d6040084ff37457ca4524a8c1791adfc42d0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BGA471400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bc7679167a9ae2cde0b0ddb0846f6bf41ac96546d3117f5ce47d6c24a9a343. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BGA471400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eebdff4a301b0e9e226654522eadc100426b6bd7131aadd3799e682a6d4f29. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BGA471400862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead10261bddd13b24e03269be1a9a36c78478e7dae21c9c9555188d03a8dd78d. 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/BGA471400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fed95a47088cde68a279bf2a7f19eb70bd7c7cc4fd30c267952d28cb410a31. 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/BGA471400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc97a2960d852c8fdc315a093fa6ac5753567cdf5b7a0affb758c91bfe1e9141. 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/QM4TX1838086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28172981524dd4707f60674de951472cb052ccfca0b88ba6a28c6efbe6d7b619. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9L2228816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a6ceb5adb8b8bf798a37de26dcf84c9aa9abd7c442e9a975b739f4bc11c233. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9L2228819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5f9097e1a0b143883fe252e79ff6a343a6a19bcd962339f542ad2e9d8fc501. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2228820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268dedd38d8f0e96fdc506cbb0dc3f1431d06f86cf2c4e62d0390299766d8bc3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9L2228826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42af0f82dfe46cc67688ed090b407d4986790747fdb3af94df4e93d6ebcca679. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2228829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450b398fdbe7178ac700808d5b8059d44b7164994ab6938f9e0ab3f27baf6e0f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9L2228836.