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 0xef0ae1a454205994b69479b6e1f44e2724b7e5f8eedffffe3f7ebb19169c91ac. 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/9a121687-cc25-46dc-bff1-8dfd25454f60.json and https://artists.proofprofile.net/proofs/artist/9a121687-cc25-46dc-bff1-8dfd25454f60.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 0xa6f9b78b91bba0444665cc48db93f4b38f9bf85c2bdb01e561f46ae476080dbb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:43:44Z), 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/GX53U2418615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb74d4d967f5da507dfdd07e1858255d0ac61979fd2ef451967fb878a82965c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2429695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95af4fe297424061a2a53ccdbf6436aa2eb9233b7d5d40a549e0ffc013f8acbb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:50Z), 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/GX53U2429693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c14c65c2a6af752abe88648404cedb73fc0f2228119694264e85ac7040169cd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX53U2429696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab05161123b1be299d881cc84fbb639bac86d9ccb69f922e603a4d86bbccef0a. 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/GX53U2434591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323fd8efb3c9642af930f6b255e3bbfd3aa2858b27967c3805093acf3bb8c4ba. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX53U2447405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c898380a9c68d6d7dff9eccc51fcf0c15744926fc1221435db6c2e3bb4bbd1. 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/GX53U2463074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1895b3bfa196bc53d76df9d1070f696fadb20ab74e137ddd66faf21ea2947727. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:13:54Z), 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/GX53U2457795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20fa90b6144a1c89b65d3b2a6874859e19c226bf12fd65ba30c96d70ac75ed. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:29Z), 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/GX53U2469254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d65a789bcb80a1ce523ff5ab03a22584bfd28c12c98cb81dca417e3a0b3a1. 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/GX53U2459887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e472ea29decc0f0b2b55fa52c5e69f077881ea71477ad411e6e6fb7567ecd0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GX53U2461769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12112839fb39ac821e20c299dcf32876dc527785a6fddc9cffac4f976fdd8396. 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/GX53U2467343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f193f7a7c4285b11b5d6d1bfc45f570d800809b4a54a211ad8c136b779863b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX53U2473508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27caa312adca2d11aa0f202c38d8cd375f9bbda94d61016ead8da4f46fa4bb2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:20Z), 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/GX53U2466893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902f81c7e23c3d39a9ffecc39f7c9ee63c4d5b44c9b8a747faad79c8bcbd7020. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:57:34Z), 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/GX53U2469357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae423f2952f08edb7ebc2ae9fd35282e7460f6dfdd3514017eb59baab7d0e8a2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXF9Q2412672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa13f8f1e6251c8266d3ba85d404f7fe806957129b194f66905a82a9a467673. 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/GXF9Q2402760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644f66bfb2200b96bb9d697a44e957ed4f885613260e6089349b13d7f4b6d8d8. 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/GXF9Q2412671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b6827c1b2fdc2da9f53070140e6d7025f6af3dfe0dbf910c43dd341f55e3a. 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/GXF9Q2402839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece535dcc583eef99d1f1cff3783f6085ade936e4451c9e940fcba1772958ea7. 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/GX53U2499311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac08774d721f4cd582168968758622b7f5b95b664f53544c433d2516958af37. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:21Z), 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/GXF9Q2402800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bd527bf5739002661c829d0232126ff34cb7a0254f0b161d6fbbef001e95a8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:22Z), 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/GX53U2499943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77d83b0d94e1ba88908a81f4e843aeed55ec9f5a17830568bfb2b703c245139. 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/GX53U2499893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c8c9ff83110bfbaa04fc07791f6e0d18f458d8339e6f57929522b4796f5343. 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/QZNWY2565846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3493d86afc7ec7992ae29f54f73e10e22c683a3e460d110d1e03d5b9d2fa5fdf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:22Z), 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/QZWFR2558198.