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 0x94fb676ffa367a6aef94f96517f9d64b936d6b92621b32e37113bd56e712d3d5. 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/ecfb8951-7c53-4f0b-ac18-ee73b6e0ce25.json and https://artists.proofprofile.net/proofs/artist/ecfb8951-7c53-4f0b-ac18-ee73b6e0ce25.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 0x942125846a25318822081d90ecbb9c833d384897db71e7f5b03f054ecb95f985. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:54Z), 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/BRZKV1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4900f811785d266dd5fb3d1592a217200bf287a6d43a7fae64576308f5fd0e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZHZ62088605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa899cd09f9df93bed2612f20b105d5c1fa6f15039e72e2aae5034b2aebf07540. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHZ62088586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169533cc7c1274378cffa5bee35f8db048524d515a0441e5dadf9dda55ea2886. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BR90B1601845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d13198a359bf2864f180431c64ec39bdcb733b6995af43fc75cbc1a036abc0. 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/BXG6R1900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f217633888bc272d422625e89f9f9b2745af8abecc4976701870abe6ffe3cde. 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/BXG6R1900608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d363b16d43270edf7204ef67011bbecc62aca0600e36c8e2c2d9d218b540184. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:52Z), 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/BXG6R2000923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46750c78e231c280079ddabaf729909469f082a5f2b349a131d57151153413ad. 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/BXMKS2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b219ca7aa3af437e91cf210ac53f8eeda7596df420c7f5a54beebc6c21e0f8d. 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/QZNJZ2408600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce86bbe3d6df412bf87bce7f6d879bd99a80047f816324af4f02a2ac681fdf. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTVM2414029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3851b7f8bbefe924b1062e851a33acb0a250f096efb7ad2240a0fefac3f2fb8. 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/QZTVM2414034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125931ce329b7a975490cd64b5b46ee8f6bb4dc039d882f8d541f2172adaf81. 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/QZTVM2414035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3471ba5259731362aa7f81f4d429a372e23ef2dee8b894eee9c3af37f1f559f. 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/QZTVM2414037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b3b1a9146bea6aa114fbcd4a93c29267644d19435a31dba9089cb2ce316b86. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTVM2414044.
Malandragem Dá um Tempo / A Semente (Ao Vivo)
Esqueminha Mc Bola: No Alto do Morro, Vol. 01 (Ao Vivo)
Nosso Grito / Gente da Gente / Negro Drama - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6457a1525128c8f4e5570e1e15c3c24658dd5d59e6cf30e4c2400e6e68ca657e. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZGLS2522004.
Overdose de Emoção / Paixão Fatal / Sempre ao Seu Lado (Ao Vivo)
Esqueminha Mc Bola: No Alto do Morro, Vol. 02 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52f08e7940f53013c43bb8e76fcb8ff0118db832ac501a89d9b93cc11de0f9b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:36Z), 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/QZMZ92501542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac504e02b39b5a2e41ce89394fbea60d3c46fc6b800b1dc0017d63d50815b0f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:44:17Z), 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/QZMZ92501538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f01ced7daf58177dab82eec69a2daf9dacce25809a323830cb07b83681aa6a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNJV2561960.
Esqueminha Mc Bola: No Alto do Morro, Vol. 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675f030006ee2bf8e6a51b7506621f47db6eecb59955359f550753cd21d01e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNJV2561966.
Esqueminha Mc Bola: No Alto do Morro (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e113d6735727da5658739ab1ede97b7e99f6b34bde54d4744eb1a6ac05f44b. 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/BXMKS2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72c779052cc90f8d89a8fd7134385e7fcc0dd13be5efa690950691ef8503c7b. 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/BCQAB2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d98c04229a63ff541164ae4e8f101890216fa38d37d5345945cdf518ada13d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZ5AB1609786.
Baile do Dennis (Ao Vivo) [Deluxe Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06efa3946e937b03a6ca9fd109c3151079c87532e7f6091d21bf11d1433d10d1. 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/BRT3O1500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bfb9302f022337daa1d8cabcc8a6e1b3279c887b121afbfc6330e233a18e4b. 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/BRT3O1500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b0dfe153f530b97a6d0d1b33b0ca229ecf7b87a06e242f10b79a8de210b3a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:44:37Z), 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/BRT3O1500049.
Lindona (feat. MC Bola, Guimê & Nego Blue) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06efa3946e937b03a6ca9fd109c3151079c87532e7f6091d21bf11d1433d10d1. 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/BRT3O1500037.
Soltinha (feat. MC Bola & Mr Catra) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bfb9302f022337daa1d8cabcc8a6e1b3279c887b121afbfc6330e233a18e4b. 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/BRT3O1500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b0dfe153f530b97a6d0d1b33b0ca229ecf7b87a06e242f10b79a8de210b3a. 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/BRT3O1500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa1ed379cca3202bd3ce83858b405816a3943a6f5edee87512cbffe7008efb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2306098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e4ba3ec7a441b2a3263cf03d23c38b0530746bdc8b0e199a71d751a2bc683. 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/BXG6R1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881fb8f1098a93c78a580ce2fb02368c67aba3da466b2a723a3e92f9b1303ff5. 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/BRYNM1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b20e0c488ca67011c96008e3e496d1dc1c064006982416c0ac785131dfe2cb4. 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/BXG6R2400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a2bbbc9b5b439841eaf95fa543e03e27e2df9c257ebebccf99571d12223c1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US7VG1609987.
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 0x59124892694186e30e2fb48e0b0ae187fe75eb806308554d1169ee59512cc10e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRR5H1400001.