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 0xfc4a24fdaeb834a83ab57dc5f62aa2dbaf7d0269798ee167838fcb0d54611e84. 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/feb773bb-782f-4ee7-8c05-73d19899930a.json and https://artists.proofprofile.net/proofs/artist/feb773bb-782f-4ee7-8c05-73d19899930a.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 0x0f8d651fadd0c0da8cfa8070a90754e971d3bb8db601fd7af14a4622c455496e. 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/QZ9Y21774050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1734978c0dde705c2e67e1b4cbdf85e607b967e2475fc744878bfda0d2a1f80. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ9Y21774051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac271d0977ce9bb5608c69088bb4d2053c4ab768282ca39e8a0e6e2f4c76e63. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZ9Y21774055.
O Barulho do Gizo da Cobra - MiRET Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09fc18db08a0e3627b1a546af5da47062cb63ea7e47d21673fd0146c397dcb4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CARE91701081.
Tribu Ancestral (Compiled by David Madrid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b32ef0f90dccf185a5774f6b45112c381787953c8f066b6345cf6d05ae021b2. 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/PT4HR2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460a7fbe774b74a53e6fe1165fe067f7f471eccd18f5820d45015d99da915bba. 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/GBKQU2459620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca72910b1d173a0856c9519835abd9e6302f3f8bee974ae24180354e52a0281. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/US83Z2503676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676c190dbac6253cb55a21b003b060736ef87b71cc49f3bba128320613c1940e. 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/US83Z2503677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7423371aa508bc8c0a307c8c090c4f43d7836700b404053ab77747c4554f31. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/US83Z2503678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbaeb7a15bb1b4117011858b3fa75d622cfad2c344d7b2c0fcf047730c2a642. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2503679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d2e3f6f5b631fa7d67599d9993a5be8dc84bc55cd849bbbd4c58648b2b699b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2503680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5438a003fb592333922ee3798f9deac0aa04c09246d1871a8b96417eb7241c. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/US83Z2503681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd1bb30d4c0799a0799f4082799dd9b07edbbc3327d34040c96895261d65447. 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/US83Z2513593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357cc0e3f24af27be4c9d91bad59bc4e6f5b63a82231e67952db977e10a2406. 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/US83Z2517490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06961db591bb47a487f47329deba978e94e71f7fd8a13cfb2d5f9d9aa5840ee8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US83Z2462887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa808fb348b4abfc7008f0434fce756de24bcb055bba1d63c685ca891ad7da0fd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZ7R42053184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06961db591bb47a487f47329deba978e94e71f7fd8a13cfb2d5f9d9aa5840ee8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z2462887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06961db591bb47a487f47329deba978e94e71f7fd8a13cfb2d5f9d9aa5840ee8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US83Z2462887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c996366075861efabe83f632d3fdf5f86f8cd19b9c9591350827e333e25f6ee. 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/CA5KR1934693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff79121d253b69b86c4d5d5c5990f95db593848fe469b2b7f20ed3563879b6b. 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/TCADJ1763056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78503a1fa2c7f41c606f01b9d0be2d7650649137c8389e1160a5d766b47dc8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE62M2147421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a7a55d165cf1e05ec0e7e599cb366ff38711654275c989ed3340defbee5009. 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/UKLUL1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced4e1c3a8912a9adc8b24b894e626333b77561ae8644ff3c165417494538fa2. 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/US83Z2117989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca24339a639ecead9c3f3ad62f25c5682138c66a5aeea15e1ead9aae418a4306. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US83Z2148254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15e39066d491eb0e1221439b2f72bdd15c9632c9d5f87e388189fda75d65899. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/US83Z2020684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac40792f7148a23e90f52f7dabb31f81fabb193311e082bee2668828e82ec4c3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US83Z2139293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b815a838b8279417aeec65d003ac3a76442acf6064b946b56196c7512d9f563. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRIDO1910759.