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 0x7b77f362089e7e3e9d0a0ae9c348f9871846b9f1899af36af18dfc3f1f6496d1. 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/5c871868-da44-436d-99f2-fd0911632064.json and https://artists.proofprofile.net/proofs/artist/5c871868-da44-436d-99f2-fd0911632064.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 0x84eebc0476c89b2d691417eacc7faad6585de2391e625830b428af4a3b0ef3f8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ARG991032950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9f7f1a0cd3d47621abd4b19af5000a156ac3d12985bc42b5094326bc13c87. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ARG991032975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e2a6b9e9c31b2d47ac4beeac2be0c65a7727b70ce115d6a6e4fe3c7d5f3e1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ARG991032977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677e3dd92c6d4b430096fc515c94f35fe95c43d29b7f7a5cbf1ee700b1831c44. 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/ARG991032997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a23b188798037236c185f81434a83987e3d21733e59e98a9683dd3bcb5eddd. 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/ARG991033012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0715a86947c7c06f62a11a0c1b97abeb7b590f4cda3f576fc719ff57e6454da0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ARG991033016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0670d64ea9113515f4abc17e5ad9e1884a3e2f6b53c9091cab1ef12e8138a487. 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/ARG991023986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c4076c8234de5521a2a864c4c7dc42331f6414f0fdb6201b4a60fa131a8131. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T10:33:49Z), 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/ARG991028785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bf4edb5b112dfea938125a7dc467fb5afc0cb6cc8d7d2850e15e0c4a28421e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ARF062300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2713b8bed79602c7af5a11fdb6140ca77fd61249b106e9752e68483a7bbc6757. 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/ARF062500193.
Haciendo el Amor / Quiéreme / Este Dolor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685528d4c9ef13b530088258f11faf6a93742af5be5c8d1deb56d3ecfb530361. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ARF062500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407777802443fc5d35363c0e018bad022c3de037a1e2dafc265c36ef0a765d6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ARF062500493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc4f0672fb727836c688d7b223baaf1b41afe1bce307ca497f17d9258c3d50b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARG991021794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881afea1ba40a5025d357f5564517d864d88f9a0e2b4683d578ba233ae8b2b33. 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/ARG991017060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192b510114814d5a92d30f5f9c1fff30e63dfedc39e31ce0cb6c0de834114dbb. 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/ARG991022520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fef7f37a9337b1c91a09b1ef397450d2df0ce07f655d54fd012ffabd62b585. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ARG991004153.