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 0x72a3ac4ac4591decde28ec1b23a6061ffed1d2aa1f2a1b46afd67d8779cc660d. 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/79e8dbfa-c843-4fd5-9075-42abdd4c2299.json and https://artists.proofprofile.net/proofs/artist/79e8dbfa-c843-4fd5-9075-42abdd4c2299.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 0x3101497286f1e60ab02b7801f4ab8586a09e4f14ce708fdbcab2ea7ac68a04cb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZB52020076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967c7161b12bb3d8d6532eb9bfa0a94d300f26b460a1281702116fad6b22c1bd. 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/DEZB52020077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5faaeecd7a7574ea42925d181a1b29065c1572b3598cc4376f02feef751f4c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZB52020078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2c2ad1f113014eedcb38ecc45206b49d797c518569957e89959237d184a3e0. 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/DEZB52020079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897c30274a5af75c8f2a2f7770157b0b5ac17ab6eb5a532616c0129ac24c3e65. 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/DEZB52020080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb580f3c70722f792e6f3230ebd14de1f8b1a17e452ee93e3bb5fbe55c0968534. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZB52410598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc4c6a427d429497a4ed0dfba12f82cbf8170d23092f7b19d734a1be62daa2c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZB52410599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3ad64dde7416bbf310f235d2ef5a58631c654ac37fb365cd26c92cb5484364. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEZB52410600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915f82cf1fe085f3c38aceeb5fca6bb1557f609b7837229750c279c150467730. 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/DEZB52410601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa904dbe43fedbd23363c5554e2998c4f6a1dd5cd8d6e0a9759602b3e6a64c072. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZB52410602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabfa699c244c96a068dee7393984169fca59f4d94f27bff32b5cee0c72ea292. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZB52410604.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742bc9177be274e1b9a11a85abbc30473851545f765f801562c684adc7ef253. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZP7F2544323.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a605793dedb54f6d0e1939c0568355a71ee9f0aeb8d61ac28943fd6de6e5fa. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZP7F2575098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5225d2bf8d5b6396a81bb05810257af6bf23aa2c5c9b9fd4abfd1eeafd0bc6a4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZP7F2575102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bd8b5fa70ecaeceb94672b54ad22c3e522cde37382c8837bf1a6e98913f526. 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/QZP7F2575108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774f624fe7961a0d5664aefe67c707f9693521a409e3fc2655a63f1d23e78cbd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:04Z), 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/QZP7F2575109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613d34a3a9da76bf18dfbd34ef1075f064aa2b7863cca2c7f130564217bec48. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZP7F2575110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e334b985c8c0648dab7977e30a8aa2353817f2a427575d26648f0c945b4da50. 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/QZP7F2575111.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23a9bc39663647e3ac254f35afaf0d177fd1a5bb32d6f6aced4d2a39b0ae01d. 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/QZP7F2575115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31c876f84d61feeab524c08499d1a29344de1f73a72264d1920e957e2d96ad2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZP7F2575116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f4db99e24511e7dc9a55f7c70bb3248394934c0c058bde179895fc28244958. 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/DEZB52020126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bddfb3746b8b3d323366debeaa9a62b375c4bf8908f29002f99a3119e18b40. 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/DEZB52020127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb037179ed7ab99ec0ae9fad3b0a45b1fb293ee9d666df6ed7274764f25afccc. 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/DEZB52020128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0245a8e936f3804e5c68f0937109c40b7543aa5572f9f6496680e31bfe2aa74c. 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/DEZB52020129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559de4f7858618b061ead5e8d2ec1c0852d24895c17fbba3fcf8fb5cdd20be3. 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/DEZB52020130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b203b21fbfba4d521a2bf44ef7415f703d2f521a502456261a6db5d8e51627. 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/DEZB52020026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4755eae497203ceb41e854fe485d6bf7b400d95e959733848535031b0fcac3a. 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/DEZB52020027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d38a135e0939e0aa659a5b1d49b150283d23edb7a43842dce7f18357cd141e. 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/DEZB52020028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e11c6d7fa460e3b76e6042508908962099d65e4822c898a90b0c9d855d3c8. 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/DEZB52020029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ab6d699ba78ef1892c9a8a45f53454e4271e97a42502923d3daa2ea07038f4. 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/DEZB52020030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe681af9f650fe167d9d3fca1b933e63d4e9500617e50250342f4b1ffc94459a8. 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/DEZB52020204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42a4fb32ace99683fde4bacf76c64048dc2c818335fae912a521770cca03ce6. 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/DEZB52020205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642ec2d2790fd8a64ca2f8894d5da6afc52fc2017d0ed4db942332fc141deca3. 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/DEZB52020206.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80e774d4492fec0c950bfeb1369f3169b8051a504d3bdb8fcaf6f737999ad8. 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/DEZB52020207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8902e982ee4c0b8d63008d06d8c2229b331ddbcafe89b494bc11e0dc53352ec. 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/DEZB52020208.