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 0x93c60960273a287d4d776506c3aa0534e24e36f360e8bf24f89635fbde01ba5b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d27d4227-d7bf-4fbd-929f-bcd439d72d7a.json and https://artists.proofprofile.net/proofs/artist/d27d4227-d7bf-4fbd-929f-bcd439d72d7a.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 0x4f83472740d137af7d04f073eefe2987a1d4416ca45f07a89cade7d6072a2afc. 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/BRA301700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261881ad0c56e7c4fd2f052d9c57a65a28962a24384101617737752e713c4037. 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/BRA301800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229a442de37c9961703c6537cbb63db608925efc698abd87a6b9b1fc5d0e7508. 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/BRA301800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cdbf2fc2fa3aaacb1754c3218771a6375834c4d344485a25661ac5049d0e6c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BRA301800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d191801d27df3e3227772106e9fe177651b9363991785cba9d4756f64d1f9c8. 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/BCTCO2100002.
Moska Apresenta Zoombido: Pretinho da Serrinha
Diamantes, Lágrimas e Rostos para Esquecer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef6b51e2811449b12c27c8b43c6ecdc04403cf5f69c379188a1a22d0aa8c010. 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/BXA5K2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0332c605f6f681fcc365fd805e36df1a2b536f98c481301d3e074550e4b4939f. 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/BX75Y2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130f878daf405a94dd34fe99724fe46c39f91eb554c77e0085395bb76c55d409. 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/BRR0E2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f4d842b40a3aab7e8b672538b3eb27f11a09a46022ef7a0eef449fdeff92e5. 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/BRFIN1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b22599a921b576b857a405e31606be20f9b107ec7a0ae1f9f01cc8be1e35f3. 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/BRFIN1600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8697e3f1579712bfdcd04503b3c1a7d69172b8fbff2c2b73b9afa2744a80cd06. 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/BRUM72201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe016f0d19d6569a3fc05ab3f95d8acac7051ec0068b7dc8623fd72e35a379346. 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/US3M82406944.
O Amor Não Sabe Esperar - (Pretinho da Serrinha E Bossacucanova Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe782cce0d9b072442f205c4f906b094f290dc8669c39e937f9851b7765dd856. 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/BRUM72402367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5460dddd13e18ed5e084b3f6e2ca0f6d26a9de8653483dacc2bd8b87a45c7e4b. 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/BRPUI2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87ec4a1d2499de4f6ea0da3dce3fc125615e405e87a21aac0c183ea607e5f0. 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/BXL3V2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a5e6e8553e6bf818748fdf35fbb8cdba26ea845344b8fc1b9b47c7072d47f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BRFIN1600062.
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 0x87ccdd82c7ebbd1f96ce5d7d11080c5aa492db15e6016b675b7974df579fa644. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BXSVC2200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4cfeaa697c07cb7ef9b833bff782ac7170c4c693c0f99a617dd8cd2dcd45ad. 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/BRR0E2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56258427ab397292dd81bd1902eb7ec4f603c81ec7ca88817bb58c1edd650123. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRUM71802193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bc407fbe2106aca034e1c949863ef90c144d56e8a2db81c610c2cf055c22de. 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/BRFIN1600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1409878bb87bbbc86311e9c3f8877c46821ea853716c3a309b07b1d7fc8ce7ce. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRBUZ2100005.
27º Prêmio da Música Brasileira Homenagem à Gonzaguinha (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1069c99dd6d25a57665ef1494cc7dda69555f9500b096c5a74f7c20a4bb69d0. 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/BRV5G1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44477cdf28f38d817dc5da6907d8c62528188f03beecdc671a492788436036a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BCXAG2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746f9b6b3f9953b34fadd95c4b50e5363a5344fdb29e213cb6795f6f28cbd369. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BX2U21800004.