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 0x75d35db986d962a236d2b23c020abc08dbd6243caa5ae6ed5fdeeedb7e921ab6. 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/1658d0d1-b28a-457f-96b5-9dfc5a1eb021.json and https://artists.proofprofile.net/proofs/artist/1658d0d1-b28a-457f-96b5-9dfc5a1eb021.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 0x0665957059f88189febe11c79a1375bf5b1f6f0c8e1ab673dae531cfc1b4b12b. 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/ARF108700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb6871dcd38d3850831ab639d94125c0b977fc0c9a4cafdb89166983c048635. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARF070700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77168d3a775377cfa863170b3b7cdcfdc05aa4d61047818f24311213af66c8a8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ARF070700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324612d85e029f6ae8a678a957e57d1dbce07a8dccd13c1bc05059a14dd5f5ea. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF070700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e30ba1539c7eda1f8b68737f4d3b664f4ebc0f94237938533239f4bec78f984. 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/ARG991043680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08caf1d2614e645aa67a383bde2879b8b207f074a7da13d4c355a2abc14ce20c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARG991043684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f3fe33a50c22c8dfb705c31f298acf9a1a3ff8807534ddffb4abac63e2cf9d. 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/ARG991004617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b5d24f84da887898250179a63da011fa544719171460a67d663df9629e06c7. 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/ARG991004621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec355b209c8723e7f4129017e7908a6e83b9c1cf5a3dc632bad7f2b63e0c0e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ARG991004622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306b60e3fbade4a8c94407b9c76f9bdc254b8786213914e93f3a7bc1528c247. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:36Z), 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/ARG991043898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fa9ab6c1e5a2d0464c964aa02b78e2d794e62c1e890e13502bb09e7508b755. 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/ARG100802979.
Otro Ocupa Mi Lugar / Cara De Gitana / Cuerpo Sin Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8711a803749644821b3933379c0d262ca3b1dbca2e5465280f5eeb0b1ce21c73. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ARG100502994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533c6a0a6705bd026c9c17e91b638d5cae110d08440dce5a017d5452b14b2bc. 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/ARG991015402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d74038785426e649fa59868cc4dd4a510f0e15337c5b9e6e9b4f37e11fd3c6. 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/ARG991015404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533ead0d2e42cde83e46b3e7ff602a368af937100156c3dbce18875d9a61d514. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARG991016497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85448876c68f02abff951cb8fca1aa5ecb5756511cbcff6af04a3bc0dce42eff. 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/ARG991016500.
Doce Rosas / Mi Vida Eres Tú / Hoy Tengo Ganas de Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9e6474d0377dee9990d296793cdd4aeb994e6533092554ebb8041e50017af9. 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/ARG991016505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1040843929c98fda28a43410f50266800cec6f1038034e1468017d93c8f59b9e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ARG991016712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8248b45bcffd70dc71530967cbaed4e4d9efe63236de2496c45a4260d58cd9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARG991016713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503e3ca8728f6709801e91a9cbde3f1182ecbcef43b464857ffe49b35a193bf1. 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/ARG991016715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce6c7a61d62870b4f745cfba25fe4f789147ee784d2f15ec7703f3ea1e553e. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ARG991016716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde564b1cc9b9d6cf5959c142fd21862bf57240c24264895da90b65853a7b8a6a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARG991016717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca420c6cac02398676feae64151b331e3d4d277c516cc056aeb729fd1bb115e1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:09:58Z), 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/ARG991016718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd17e7def741784989af78282c1fc0144e204d7d32588bd28de0b2caa1a205bb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ARG991016720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f19127aba2051f847362b0541fa8aebf7aa5032efb4716c643aea6c3a3c958. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ARG991016721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41127cf60978b113e42b661ac2e932809cb71f6afe1f7d36f388c4efbadf75f8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ARG991016724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848634b842f5f1998070b89d33adcc522873ea61fc455643143908990ba43410. 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/ARG991019209.