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 0xde1ccb0260c37f6c1476bcbd24a3e2cb2752d786a2febc85c47e000f1224e65e. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3517adb4-68fe-4c53-b62f-ca7904c3d72c.json and https://artists.proofprofile.net/proofs/artist/3517adb4-68fe-4c53-b62f-ca7904c3d72c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A 300 KM por Hora - Um Tributo aos Autoramas
Hidden Waters: Strange and Sublime Sounds of Rio de Janeiro
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 0x98f4fa4eb85e3a9cdf7ff776b21ed38105bf2d3c3a2ee574339882d466d9ea04. 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/GBCLQ2200725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9fb6431fa1b8eaa8fdaccb68a3a64a9845549d4255025c38acb5ce86e1c11b. 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/GBCLQ2200726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba70029d10c22445cf656b231893c5bad5c05a8c80708af8f46614d37da266f3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBCLQ2200727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7359c592b51f7c2aec6476341070a481e6fe6b1058a5cb2ba36147995d25ce7c. 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/GBCLQ2200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa784d44718931bff56dfe78659b20247011a56a50f598999cb53cd987d055761. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBCLQ2200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295c7c1eda36f208959e055b03b9bd0fd69e5708056b68ff9b2674bbb54ece5b. 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/GBCLQ2200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb34224bc82dbd616e2ac09bb080721c8a4c7cf0804f1d13c3e656e667039bb. 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/GBCLQ2200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058b64ffc00a9b9a17f3b502ba90606a208e81394858f23b46b58fdac111d1ec. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBCLQ2200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91abffa6c4c94fe501aa64990a9ad8379106f5945e42a69c37b140130405417d. 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/GBCLQ2200735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82accec21aaf3df5cfee013b0985f0c67af5bac75aa3802324562e861956776. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCLQ2200774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef60fbc16aea98e6c3d4f3387fab53d00a8046a895c783a1d93a79cd7ef0f5cc. 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/GBCLQ2200777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f7c9b981fe09d990143962f890962dcfa53bbba8b8a349f02d85438eb9075. 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/USCGH1903801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1367bbef5fec5ac78e1a3a161f76fbdf67812c5a465d895760c895c372fbe35b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRCEP1800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899c299d849abb6622131fcbab73cb57b34e7e7a92604aeb1079888d3dc0cc76. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BRAGL1200044.
Marcelo Callado no Festival Rockit! (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6778b5e1c90f3d8eb884111e0f945ac4b047eaf24fa9f7b79c54a1588153a5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BC9YF2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736e96f40fa2e003ff05b7a807a8511c3b4b5acacbdfc018fccd1ca994f0719d. 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/BXESU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a55f5a449bc3403625749c5761bfa18a07d38f4ad3f11dd9740a89e3c67aff. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/BXESU2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffba3b85c7153a4fd2f04ef65168b41e5d3b8ceecbd035e0cc2ead711634429. 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/BXESU2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff23c1ec2119a84105da2961620e8e48e1fea3ba20e12e67fedb747bc5713461. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXESU2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cd6ca20e734aa6fcb312e8242c13009eb0179c9707fc17f0f3cb253e7a0312. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BXESU2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ede792595bb72b171799d6bdc9fc0f54622ce4d5cd219605ac86d00ac4cd8a6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BXESU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d852594c40d423c1c4be7b5008b465e0b230d524ff4ca2f3cefa1eb76f64d1e. 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/BXESU2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65754ee20f4977cd753ea898e04d940349f9b6ae59bb20d669f97a44c6ca3757. 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/BXESU2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0103232a5580b580ce6921c26cd10ca4f58658d5b1ffba44237b82b429a4eed3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BXESU2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d5fc8d235d0b50dddbfa204bc38fd7794f88cad524104b19117180f5fb08ff. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BRNRX1800004.