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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa1c3ae50ae68943be7f6e7115aed7df32ea96476d55f39e2775b5d0d91d8bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a83c5aa0-fdf4-47bd-bac8-ce39de31049b.json and https://artists.proofprofile.net/proofs/artist/a83c5aa0-fdf4-47bd-bac8-ce39de31049b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3662b61769b6ac2826a506e5d9dad800ad3e7e774c3db63be38e8e7d84aa0a4f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRWMB9703214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ee33eb4574760a06c8dcb04493332d8e3d8755c151759bb32cc9374639fe8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BRWMB9703215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5d75ba0ae48faba1cd629d6dc2ac5ade62b30a6750b484461e130767109ff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRWMB9703216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4dfa551de889c253ad18dca6af1dcfec8df76ec6f9cf952ecaa45e6a973fa6. 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/BRWMB9703217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c584ab4f0ab73cc8903c010fd2dfede23c8865e99a74194de0f397c0eb3f3. 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/BRWMB9703218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcbe9a788a2c3832a491658d99fd3cb629ecac635a007ab695eb572c95920e9. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BRWMB9703220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1384cf5773837eb382c80c3bb473946fa7ee54f316b7f3c607b1c5891cecb48. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXZZC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1384cf5773837eb382c80c3bb473946fa7ee54f316b7f3c607b1c5891cecb48. 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/BXZZC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d7bbc6a5d0be0bf8f23b77aa6f46774690f974cd936b589a36fd168d992de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXZZC2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe35901eda8ff96107eef57aae1489d380a5651c156a344183e960845d238786. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXZZC2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee2bb413fd9f6923e3b1e6a495603d31ba91d683af7160a06ec1250c58069e. 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/BXZZC2200010.
Faz Mais Uma Vez Comigo / Me Leva Pra Casa - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe428b976c18b09ef365a384d3437296f55d3533c085b17028deb0dfa2d374b4a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:34Z), 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/BXZZC2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc46e06227c5a7b0884371fcb161664574b9665ccb7f09070621a604be9e234. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXZZC2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50368a329f7fd29087c50bc95497efa42663fd15e87041803c0bb8cb211a51c9. 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/BXZZC2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321e3922c36bda3c2d13bf6d974867f715d6637cb3f120cd4f4f20c705ac0258. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BXZZC2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8e98213f1a72d9932c7be7b50c65728220106d1dbcf84b98597d3558fddbf0. 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/US7VG1794682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641ed29c168887eaa7829e18242fccbf1db662ed31b99cbc6754d340a99bd01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG1794685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45740866ecb978517c139f4262ee14f86bade0e51a911c23d3679172a7bbbabb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG1794688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843f2c2aae24f43b13c5fe79c3ccd930006085c5852b693584f318905c3d3ec3. 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/BRZCL1200004.
Multishow Ao Vivo Paula Fernandes - Um Ser Amor (Deluxe Version / Multishow Ao Vivo / 2013)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d19353f6e548d1b3a18273d0895878d6d268ce3b0d7ea8513960e56de959a9. 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/BRUM71301127.
Multishow Ao Vivo Paula Fernandes - Um Ser Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d19353f6e548d1b3a18273d0895878d6d268ce3b0d7ea8513960e56de959a9. 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/BRUM71301127.
Saudade de Nós Dois (acústico) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a03a574988d1fe55e55c8707eac83001ca156e8d9d9f5f53b0938f1c9378841. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRAPI2100238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5b1c3d508718e23f50842e3cc0dae9d630cb218e44b0e5b6edb2b2a90eb408. 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/BXWU92100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218669216cdbfd8e20745bc9694b9d9796a78e0cb85253c1e43c07a9a4b803a4. 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/BXWU92100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3d8e1cb2a97f4cffb3706eecd9b07855195c9e3dacc2cb1432f8d969fb16c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXWU92100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eadf35d8d068054b95f0fe4743bd1bc2ef86d6a6e397f0dfd60e1db076c7ef1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXWU92100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3720e651cadec63582ff563bb22bbaf52bca1ecb895271aaeab984f847a73405. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXWU92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e346a729f4846a2b8bf466fcd41b83ba198ab6792361f04d7b67e3d3cad34. 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/QZEQU1903431.
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