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 0x957e2c06129be9094f703a0349187d302bc85e3385839a9a45a5fe13f9e46ddb. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/983c51fc-fc77-460a-a1f4-58ac7ed5665e.json and https://artists.proofprofile.net/proofs/artist/983c51fc-fc77-460a-a1f4-58ac7ed5665e.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 0xfbc61faa8b4901aa69cb60d1a3a8818c13f15933f04e7b4fa4f5ca0b7556d918. 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/BXTS72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2c8e94c749835eefc44482ba1fa7f811f1967112be556750050b86261adfd7. 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/BXTS71700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22481daabeb1478fce52a3feb1a0e95646c9c3775a5d3f2f118a4a0863a876ad. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXTS71700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934f9adb7dcd325430bcd44fce3967d2a6499c0b01cf917b6836547f136c548a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXTS71700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c92af5af8e7a9c7ad1d8d324ab3dc18daf3e894754e64394427ef908701d0e. 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/BXTS71700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff8d37e9d432202fcd82a264dbf0540ceb26736324b12385aeef7b40316b9a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXTS72000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad48f8ee93f57f180bd9cfd092b5bdedb8b9ed2169d00d530b5c0ca88f1a3783. 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/BXTS72100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12f7d8cf71960bff36ffa827d46a6078137849c8256d36d12fc6282b0a7806. 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/BXTS72500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cc330e7cec54382cc30878fdf31ff1d6268e9776bf0335177bcc6036add72c. 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/BXTS72400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b26a37dcabf4b41603793cc5ebb2ccaa0e0c8be9a71626990f2dec7915f9f37. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXTS72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9699796bb64b1468d0edf33b3ea7275c0f16f94ae331a3a7c6dd8118f658c0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BXTS72500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddcdf6ff5772d6f650b631e441342ac514e6be659dd2434e1bb460c89ab7de9. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BXTS72500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d2ec6bd14e019c9220292c1464bc9e41cddc0a90598dbbffa308781650bb9. 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/BXTS72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7316ef3e9669b5944e37c7833250c4a7ef2fb8f489bc4b71a5318cf989c8965. 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/BXTS72500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483bf73a1aef84ea23556908115eb6ae83775f1d370037f1765a9317293f9ec. 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/BXTS72500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9789c04838ef503d83294206886f176d2cd2871d06eafc94c7dd6346ae1d2a23. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/BXTS72500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b1a54b150c89065713da0012c0d0b319b77819d7b3fb3678016ce5c654d0c. 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/BXTS72500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811937f34b93fe6692c6001ceb2664df9db895afb07a405294a3efe1030d90a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BXTS72500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d1d1ad60565c2d5962c1753f52e9d89349f6d1532ce2ef1f4c06d4cf557276. 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/BXTS72100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abf2a4d0caee393d8118f3829638aecbd9ad20f912143affafdb3c293988527. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BXTS72500012.
Arthus Fochi e Os botos da Guanabara (Ao vivo no Barbatana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d2ec6bd14e019c9220292c1464bc9e41cddc0a90598dbbffa308781650bb9. 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/BXTS72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b26a37dcabf4b41603793cc5ebb2ccaa0e0c8be9a71626990f2dec7915f9f37. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BXTS72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be5b92495bda5b16b8523e325520728dcdcecf75860eee34826b08d3ce5e94. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/BXTS72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223df25b1adfb544f334ea49b80493dff65e3c11291981345030c3064a7ca53d. 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/BXTS72000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073375bb232ff0e5aed449e71b1db42e5ff4b3ea01cf10f03716ff9e40aac667. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BXTS72000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9187cdad946332816a9a67ea7ab5c2cfcae1c26f31642414b62f245bf31855fb. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BXTS72000002.