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 0x27d4f52e5e2f92f8d4c9fc39f3ed5adc6cf0c35b76bc04fcb9de364684a4c0ab. 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/8cc55641-7dc0-42a7-ad3e-d3af09c3d7dd.json and https://artists.proofprofile.net/proofs/artist/8cc55641-7dc0-42a7-ad3e-d3af09c3d7dd.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 0x24bcdc97ca8aeb77661eaf3ee1d143c06d3572c7e2e8d668b1f1a1403f25db09. 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/QZES92256443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b0aaad808284bb728ee179d78700415a2d89e432a32f6fe1842b55e55d714b. 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/QZK6F2240277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ab4a0fa22b69696d96173db7daa4cd831f6da081ee34fe88e4bf97df305ecc. 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/QZTB22219874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a020290fcb35c942735af2335bdd729e545a8f9b8bab92c9f257c0403023ab5. 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/QZDA62398196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8580e1fa46066901b485108603c8d6c55635acd3f9361fdcab0897c6a71bf. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZMER2333804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2702e478f988485e05ca9ed2daed83287c279ab71a74b012ca9cea5b374920. 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/QZTAS2375596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27a855837c6c3fe00034b53138fda1937dffc0221dd78288bb40568b4cfbef5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTAS2376739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83eb12a9d7926d4f47c74d6ae87229dade7cae7a3be26999fbfc1f4d6246b4. 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/QZTB52391309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339d907ee95a0266c7ac03444b47ead63b8f1a246d51ae88ad6142107c9f72ec. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZTB72337280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd5f79ec812552571d65ac6601d935ec24f3de0dbd6c4819040a099d27855d8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFJ2314004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4d9c7dfc890bfc5c6a51b19d09b4c60b0cf352d072bb6b3060e07f471ee65f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZWFK2325372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd499e6f3d20fd50f92edbb196c9950816fe251cfb64f56fc3059317f8b460d12. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ42460743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc4fb878befe380da892b0edc98a4e7be921b8755e7c6478e81465a9986cb1. 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/QZES82450277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e1d2283e3be5a23a9c8622109cb2cc68b1844060781363e71b18e7cc5cb778. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZHN42434847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ea2b5a866ecfcb867b11e2c59428f18a1cb469904b08eeac67a2686979fc2. 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/QZK6P2473264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece9d5f43a66c6296ec5b80662c6fc926544d4bfe54ee971d061b19719abba6. 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/QZK6N2492268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ea27e595f5c4745e7a5cbad6042ffe5d41bcd3f209a493f0da0555dcc036a1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZK6G2408873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4959823c724b59ecf6e2ca7ded9c8aa8f1eae442834a7347ea81b076ad6c91. 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/QZK6F2431822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f18181d3b3857e996c068e4ef44afa28e0ade6a520a0ef3b0c9caa0761bf5ad. 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/QZK6G2461937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4576e8367f4505354e44209295900cb282164f8d86f3fc76a04bb1d95cefbf8. 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/QZK6F2438974.
La Cumbia De La Flaca (Santa Muerte Ortega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5947628f945a13c342716168f90809522775f48bd9661e27fc42827de4001c. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZMEQ2420912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0781f13a194c9286cf6adf6f40d518c7fd310cfdad33f2a6d7b7244ba33a4762. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BK4DA2431280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8665b4ad3228f42af27fedc5570dc72199ecbfa304f7adf6401de4c0d1d60933. 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/BK4DA2431281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd5e18b1c522daa024962d718787f5348625978917c2f1b7dbff24122b248e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/BK4DA2436808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab6a991545ecf1f0d5f10d3cf3f8eca569fd6921ebd85d6ae2e02d305cd4ab2. 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/BK4DA2441771.