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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8707a4487ccb7a70d1386dff636e78e9989c8c6cfee62d50ca233cd1d186154c. 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/dc251b81-f76a-42db-8779-80da4649a03d.json and https://artists.proofprofile.net/proofs/artist/dc251b81-f76a-42db-8779-80da4649a03d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11dd3ae14817ca9fbecfe7d29df58e82b6c29e7622e7f423755bf80116f19c. 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/DEBL60312882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720b76e42fc697e621da21180a2c73bb6e6146ec51662567ec74deed137fcb6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEBL60312884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf807fa56c7a00c9516e24e690f202b5fc574dd7ea74f98ca51a5bb92b61135e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USL4Q1766702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848365435a3a3e99911dc6856e68163a27c331effc56f74dcccd0d1753f6cf38. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USL4Q1766703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71fe0e958278fed54ff5ac19d1153dcfb8491734ff2e3e02970b3707f9789ca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:14Z), 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/USL4Q1766705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a176a68b4a46a594d2c29bd623b32b38480839b6d6780c4774e24bb5c7859d5. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:58:02Z), 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/USL4Q1766706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d51ae08b10c577e43a37aea4009c6f46fbe129bbd7284b656f9a729703f894. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USHM21947434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ab6e6b9fbfd0179519aeb188aa3f8d3b4a5cc7f7c082d35fc98ec0bd8fa04b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRX452149935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0fb3df6f654eeb2e6cf7a9c0b02d30fbc104d3df28e93784739fcad99c7607. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRX452149942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94579d82df88d7e0633778bc3c37cc92c6a43e0da454d35c40e4eaf01347bb22. 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/FRX452149934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb4b6b7a8af75aa731a488fc33df5eb91ef47e1c6ac3659c001562fee39b4b0. 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/FRX452149936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be094a2f1d068b885ac91fc4c540aa832f5bfdcea1f5b1284ab05c2429f43ec. 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/FRX452149937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91258fd3b4564a57e252d5d35a4a2267910b087736298288bdd958ec361c20b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/FRX452149939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04459a30dad29b78d580e885ff1e0ee71f1f092d34e7f9b386839f32712d45f. 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/FRX452149940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777a9d159f0c9428d4612596fc27d7af48d2ec0484aa1e9a469629fbc87da36. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452149941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0fb3df6f654eeb2e6cf7a9c0b02d30fbc104d3df28e93784739fcad99c7607. 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/FRX452149942.
Manifestation of Human Suffering (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996139e62e072d6008b7ae386b0cfee7b58117c3b36786eec2d2f56c0c737efc. 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/DGA0H2459613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c88a78c26a201601aeb2093e84bc01eb50d407d78cc79fe3dc13180bf7ce5. 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/DGA0H2459614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34bd88b8e05d3f7a4157279b525ae9cfb329237af12ada92311df75eea479b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0H2459615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e399db2092e303b88874a3ace4f39e1202780c7ce14c49d4111b9013733ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2471076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bff9b8e1bf589f0e384af1c0afc879128e77b893385651704ac4fe9f47602d. 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/DGA0H2459616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ecb4de19bbc01d3207d4e05a5ccb32205f624422d4b1427b209516d8750b1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0H2459617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653e30de8ccda26fd77ef87fd2b02f24a356d7bc1ec1f67b411400999be34f5. 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/DGA0H2459618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16484c93da5ed70f26c9af393bd9e9df6388def785541aa3fa211128fb52ba1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0L2323158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89236679e771ad283c79a9a582aa4428e7e699701152058455c60bfbc0e138. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0H2459619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950af69228c02a8a049f0f548a600181b4bfb481b57a2895abd4debfa31f86a7. 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/DGA0H2459620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8802efc55ce9d636d5f1f22d56859e51a42d10a5b29b9129184c0bafc9215ea. 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/DGA0H2459621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65fb063cecbf0ded7c20ed4e12a6141c93fb70d59b4b7ddb1cd95b420aad28a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0H2459622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68018589c0b52a92385d95bd7da00953230ca0339a758230994cfa59b73f2d9c. 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/DGA0H2459623.