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 0xf4d47fceb53380c3558f6bf16b6ce86e99ac00f8a0ac70e1e68993d5e56c5b5e. 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/6ade5b36-ba2c-4374-a98c-c6abe16cbcac.json and https://artists.proofprofile.net/proofs/artist/6ade5b36-ba2c-4374-a98c-c6abe16cbcac.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 0xd9322207e4357b4d79f6eb07e278695db929e7b60b67fc51da0e0160af633dd8. 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/QZNJZ2468577.
Alysson - Será que tu fala (Prod. KroosnoBeat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a872bcadb10da5ace4ac3ea2cc52f45c35633d95d125c0c175590a37da21d. 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/BX5EU2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe368b6e49e4ba35cf2845aeccbe9157b6a78a333376ab2a3f249412c59d7e727. 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/QZTPX2497226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779fa32f1b7449f170d0c084f43839fb873f1bcd1284f90510449fb374dda484. 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/QZNJX2435770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccec1ea8952313dfc651a9a9fdc93252a1905f7269f8cc612f53e2963339ec4. 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/BCO3K2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f160fcc1bfafc83f1c75398945e457b752ea844e8b9a6d4d5292992b018afbb. 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/BKPI82300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8054a1edfa87ef7ceac7d6d832621fa15334894a17eba975418edc766fb408af. 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/BCVP52300027.
MOSTRA HABILIDADE SÓ VOCÊ QUE TEM X MORENA BELA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3574dbd8f91783345e679156861640cce8e9a6932baccf3f6ad30b6e2ebf2ab0. 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/CA5KR2354820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ed98c0aff8036e73a1579f08fa5e51d15e9a5345f987d8d2c7bbc052eaf08. 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/CA5KR2354821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ae45853de2d8865ab26d44fa4fe292c533980879477ff559b47888895d23e. 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/CA5KR2354822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae61d8b5f40cee3618360dac266f39cc9d401e3f05a5a41ff3237f0df9fdc94. 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/QZEQU2251808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5027f4dac31b8140966f715ebe5b85ef88427c4e469b95bb3d88b4a9c98fd2. 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/ESA112306526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a510cdc64f16bd60316e1f956c7e2b6fcd60fb1116fae847d5b7dcdd232a22. 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/BX4NU2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11f33758c133e33f5152ec3976401f2c8c47888a205cf22ea745caded745154. 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/QM3DF2290661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226a0db1a8c072f6000cb4642e4481c4526f6d6065746db58e04cc02aef8df5. 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/ESA112307268.
Vai Sentando Sem Compromisso - DENNIS Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122fa369b8d2955a7fc6e86f3c65a06fc4cba18cf0723985b1080c3d315e610. 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/BRT3O1800088.
Uma e Meia ou Duas Horas Tropa dos Sem Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc14ddde9dd64ff880664ae2beea723f0859616f6e99c7c916193ff5744ed13c. 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/BX5EU2100070.