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 0xa8023d22a34f5dace29840cb01d3e49c6d26102f787dc3af5d2aa0e780e76d2d. 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/a137e673-760a-4146-bde6-7e3b85db101d.json and https://artists.proofprofile.net/proofs/artist/a137e673-760a-4146-bde6-7e3b85db101d.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 0x35f38027dbadfb378e5de9742ba4e8a55f261b189c35379a8086b0112986b818. 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/QZGLS2154085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527552b7095f9a663c6181576b51dfef01e5babbe50756f9a8308f89963bb91a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZGLS2154086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5380a9311564fae46254564a75f1464b09557da03c0cd48c1097843d92474. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/US7VG2287635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd111e50f0682b68bf375567e05a307f7fa9b65d70bc1712dda4d867e39608fe. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US7VG2287637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd3f42251e2dde5acea9508468bf5a05b19a719ef617049593815bbb353f272. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/US7VG2287638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef487417bee2731749958e3ddc3e06840b55a8de2e5cc965f0d82c0c5b86a9b2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US7VG2287639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d801dc6c5ebc8afd3ab89a5ce1f9083b5794d0cdffd6a7ad5ec094e8ea0fcc. 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/US7VG2287641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b51fa4d46f65303f0f76c94c81d4e83b8a41ac9e3633b27d9c0d498006a928. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US7VG2287642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34788f092b1ade67161e55c87b67c211a004a367edc877d8bdbdbe75f3b19e4c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZMZ92387155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e373a4cc018471a9aa956b0c6d40bad48cc7b4a166267a11cf9ce1a26118e4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZW9L2327819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ce2769e65b8ba78c52004dfb447f711f8bda991f2bb0b3e178601b2ad0153. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZW9L2327820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8115a30e59dd493dfc31563b6e00f47913df1cbdb7bf7a726c206eb2b8b732. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZW9L2327821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1bc66ea99cb80d55600a28ef8e9528eef33857078c3bc1fdc8cdb841b4c31. 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/QZW9L2327823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3213a45431a8bcb7e1a7e3cde393358eda906223f3ca5ad4d4c01e85ef10cc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZW9L2327824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff38f0f39af1bd38951fe5682922c7a3a313b1d505661567c94137cd4fdfee6. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZW9L2327825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c473d674b937c155ec809a9ced21c5dd69b2421bf62a712250ee27e02d46d60. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US7VG2403312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f28fcb01df8ac89fe8f6b2351b8a941f9c5a1da52bf14affc7acd8f5dad4a9f. 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/QZW9K2470308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7baa73ff4461af7399b143f07ef69242becab5f1c478791047e1b60839f7796. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZW9K2470309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0e6c9e1f13de76bad7fcae3b7b53d402502310e31c4a1da051977fb28a1dca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZW9K2470310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127a332fded75e4dfbea86f40d0fecfe315ba2a3cce7fc5edf983b6c3e8891db. 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/QZW9K2470311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12d3b51dd167b6130025770b01b117b91a26bb7556ae3172d7eb8b71dab43d1. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZW9K2470312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a398a4e21ccec8f77680ff25b816b15ccce646316c136aa1d7bcc5d8ff55af. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZW9K2470313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b8e5ddb4ed7ab538aa68a19c39b2872c8f9c52395bee27d88e2b75eaf2198. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNJX2540564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb71ac48e12dc2089ebb479e712e40d7faa701b5ab69d1653cfd9b334f504e. 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/QZNJX2540565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2738b6487c504f40ee367cb046677aec37afaf376448718465ed77b8923991d. 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/QZNJX2540566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe37a2ec9c00648838f6279fdaf198247eedb7a60f30e8ffdf1c53a638b159f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJX2540567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8041d3f6a1bf61e69323308ba2591cdd5e6adf0ce1109d71168815ee596e31. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJX2540568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c787e4415c37b7c3ae050fb64fad42898a4452be3b195b745ecc68c6ad5fd38. 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/QZNJX2540569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8099da2a09150fc21b113fee91722dc4a88c723ba3ef1a5b9fc4e108182235e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJX2540570.
Comando / Pra Te Ferir / O Seu Marido - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d4515ecd23ddd82109ec8dfc381488f13dcf6a72b14d709abb75dc6116ae37. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNJX2540571.
Toda Via Me Alegrarei / Algo Novo / Pode Morar Aqui - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1578d97c7f928213c231dd0a1d132f13da9a4f88460ca22bd29b959b054f3f1. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNJX2540572.