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 0x2bc69ebe898be8fb55e30957666860a086fdea674118b2a2ba18e59f50cc3104. 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/c34c975a-6765-4ad9-87ab-24a1c6c96fc2.json and https://artists.proofprofile.net/proofs/artist/c34c975a-6765-4ad9-87ab-24a1c6c96fc2.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 0xea70ee136df59821d56b782bb203b2d238fdbde5c8c8606a9e68c908ecd1df9f. 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/QZANL1797557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4116d10c273a21cb8c01798d5ff8349c5c8a6d2952e7276c034a1b4b87b9f33. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZANL1797558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caf848ffc7131a6066efb6b5af59fe60d6a28369bc10346a8d8cf635afa8c8c. 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/QZANL1797559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebbdc696169d58a15821d632dbd82fe7f52bd77eeddc3a51619f442767b5713. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZANL1797560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdedbe63ae45f2989c4772cd2b356098d02106fc478c7fd5a07ca628396c767. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZANL1797561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18e96ea8f2346daf2caeb19c1493d73149d3bd63ba711c77db387865a806efd. 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/QZANL1797562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d184211035efa09398e76b7f60a5ff38fea1319e96d9588ffdd3b3328d0e709. 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/QZANL1797564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e4ec42f9da7a7b4ad98c4d11a307f957214d74de73b1cd4ad4e11b590aac0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZANL1797565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5083375cb17bb76583df81edf734f8e677a597130739ad7983dba5752de51. 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/QZANL1797566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6da5ccc24f3bfb87e1cf3852a90a9d718793c1a65fe4239795ea0aa4c11803. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZANL1797568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14de6488bf6ca5fafd573816f1e4642befd24e851adca97ecb71788e4053ee9. 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/QZANL1797569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77d3ca6ef0c522429904ecdac86fda477211cfe41f4c2415a21c17ddde528c. 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/QZANL1797570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ce4896b8ca0e1aa75cea6138def05f5a869b0692a6ff41e881919daed1bd9. 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/QZAPG1826208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb225ab4a8174eb03ef003ff86bac8ff3e19eccc1e8f93c98ac362b15477b9427. 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/QZARB1863936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e8d1b700b816b7ec933336b3427f16b05700ea56988b3bbd83abe8c01b9050. 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/QZARB1863940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a4427142cd1b2de375d08456642d8370991a4e47fe6cf7ac332f914addd3d3. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZARB1863942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaed7ad71abe85855a4cd6162d68cfa999ebc0719da731a0b32dc20a53d56ef. 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/BR4VT2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5bd00b214cd6e6a6e0153195ebae5c666571fccc55193f29d0f22ad0993f0. 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/BR4VT2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb23f2f353d56379f0110b51a1e087fb78a17544815402bbac4691078878830. 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/BR4VT2400092.
Guilherme Kerr 70 Anos (Ao Vivo no Mackenzie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7e4d5febdc488f05ba838c783dc3cc0b674b4b15f66719cfc02014ce298e3a. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/BR4VT2400191.
Muitos Virão Te Louvar - Ao Vivo no Mackenzie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbcca784062c6a541e9fdc58be60e6e96cbbb14820a3270eb8c92a29de1cccc. 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/BR4VT2400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c684c2906fb412cb2fe9e5f49489bebb20aaba1f8bdfdabb30f5a5288489ed. 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/BR4VT2400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caf487195374bc33bbd0b1ae3ec8398065a0dedcf1e6a0b53cb24084199e184. 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/BR4VT2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbcca784062c6a541e9fdc58be60e6e96cbbb14820a3270eb8c92a29de1cccc. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/BR4VT2400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bcab15caa9253c2bace234c17571cfc3af08df64ef3363a69bea6e0e32be24. 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/BR4VT2500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc9a485607132d16a0d10386413223a1ff35373ffe464bec41c3d441d66e6e0. 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/BX5CR1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dba6556a51f996b62947a801e2971099248bb0380d5d2bf5bc06332098bfbde. 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/BRVEC0900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918d909f505dac016cf50819595a5b0c2146d8fa09410d66f8422bd5e9639ccb. 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/US7VG1214936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1737966b3185330d7d1ecf07437401226a1a7fe23060af1396e659981f60a9ee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US7VG1214943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670fc948fb546fc587cb4dcff5b69ade1337581306a43590faea55a616c71b3c. 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/BRGB91900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a397f29ffdb24f38d6a23b19252ecf10f0c110365e49793ec715f93fc86ff8. 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/QZHN82017748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c98f1a225e8a2ce36530d2a6d1ed5f520b2f3806390d730168658b40923699. 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/BX7SN2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2829b1d54dea69015c319b302087aacd3347bd1e4909283e6e80b3911c09fdbc. 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/BX7SN2100023.
Guilherme Kerr Na Casa (Terceira Temporada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ff0c83bb489a40ca1c06b26ee97251f509f4094e7804f4f3720b507a78bc8c. 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/BR4VT2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3792069a42a7ba127694809e4e0aed35a6bb8c98b6ac22131251806706c26. 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/BR4VT2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb0b3188e1f1a21c45831579b52d31e35975668828a09ebcd9411baa09c2faf. 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/BR4VT2400044.