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 0xc20e7df5d04c8a9647caa50a0975038b904cb34c08b7571d3f4fb9134144e276. 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/2307543f-0dbe-47a8-a072-982c1e80c2aa.json and https://artists.proofprofile.net/proofs/artist/2307543f-0dbe-47a8-a072-982c1e80c2aa.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 0xde653c36b17891c0c7e94678c82ad8cd5fbcee1a657b134ca398599fec3853c2. 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/BXIV82278556.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e7ce12eb09cad496859a29c269d605057efb9eda0a50ac47ceae2056456d44. 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/BXIV82282943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8772ad178929de1a1dd500162ff42735469f1ddeb4e248b1a0d5fc0f2d712b1d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BKSAI2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654453e238deec5b6f69d11ecca683ef75a874c84395c474cf68402c5d7bcde2. 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/BKSAI2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358c88c176119327ffae2e18034bec4538c747515aba0f8d52c37dfcb857a2f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BKSAI2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4164820a4bdf1fc79ede00b07783c263471d43f0d9cb80703cb1d810eddddf1. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZ5AB2496146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77756b4295785783dea3702336d7388da9dfe9d167d6991fdd519db60b1a92eb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BKELR2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88780e826d94a0733b658d3d32f63ce2d3bb7c4d6f7f0e0104b46f1a9d0299c4. 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/BKELR2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c2ae4f75815f129501bfe27dc97a9113afbcdf293605f6c91b92588c6735c. 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/BKELR2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435736023f8c0a9119ce8dc58b92c7c8cf95a989e9d575e4fcf80f9f86354576. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BKELR2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe5a5ffee1032b3fdfe0cfb968cfaf1292ed44c62a9bc7f1eb718aa6442cd70. 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/BKELR2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3414e3667aa5a811e11b2ec19e07b93c5889f4e3dcce08b086554f7cb9ab172e. 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/BKELR2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe5a5ffee1032b3fdfe0cfb968cfaf1292ed44c62a9bc7f1eb718aa6442cd70. 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/BKELR2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9978d10e1ab8d1008ba7d4aac4f1b7f70c2b64802f473ec8a76c88062294c74. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BKELR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e058ca409ee1237355ffe271ac870ec7b43a5e4db2613afffcc5c744925ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKSAI2300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ecbc7efc4306048fa2e2de09279b9eea74c2fe569aeb29703c382e4e4097f6. 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/BCDHP2100346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa453913ccad13fe176aea4e7f695be7b3ddb4a049ac8a1cc34f2daee69f7c. 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/BR90B2402429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bf5428c97280b9c9e04cbe8b5215f9336984053186829d20c85f5e6612cfca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BR90B2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfec51809bf10c3eb8e509eba8e8aa6c226f48f0509028b64141e54c31d903b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK1P72400057.