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 0xefc063a447c581e2b047e0683ac32b72b6bd0f3ba6de65eef429e9d97f749ee6. 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/4c464359-0d92-4476-953a-f9c532ab0e31.json and https://artists.proofprofile.net/proofs/artist/4c464359-0d92-4476-953a-f9c532ab0e31.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 0xf0a13b4e608bd05d28863e08f5250ab84006c76475babad2a072db0d5de36ab0. 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/QZK6F2009045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ec343c23d7cf031d6cd4120d92fde553fe5353585e383d24f66d1f2dc0deab. 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/QZFZ62137175.
De mestre pra aluno 14 (Urokodaki e Tanjiro Demon Slayer)
Perder Você Me Fez Assim 3 (Eren Yeager e Yuji Itadori)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1a25b94186bfb85ce381e17d6813d81501198d50eee78c95ea3d27f0a79d6f. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZDA82188579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a631e8e99926bf505899d1728648ba37538ebb0b4e4006f3f759634788d71. 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/QZES52130854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901f8fc6761fe8239a0d457b813366b23e56d7f24456f939814aee39456977c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:53Z), 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/QZES92149797.
De Não tão mestre pra Aluno (Thomas Shelby e Michael gray)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a2ab237313ba766c26d7d18aa19e90d689bc56c489777cee8470166a6cc451. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA2142659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f60bc3ba99abb729bef5782b492338ab154a9091b157aba65edcc0190dda3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:05Z), 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/QZHNB2123723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18beedb7f53281890188f7a170015708b14a70ca3033cfcee148b56c5d1e3953. 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/QZHNB2122173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96abbe417604bb7ea712936cc1d2475eefba7d3f2295ad7c78db00220cf41c88. 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/QZK6P2136597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f777713ec1a91be6d2dbfe45f567f21cd462f715bbbeb0d1dd3199b8414e817. 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/QZNWR2134220.
Perder você me fez assim 4 (Homem Aranha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917e49f3d18440b4a66adbe06c72eb32042b1d1cb5a3920e8380a99ec264f9f. 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/QZFYZ2283895.
No Estilo Baki Hanma: Respira Fundo Lutador!
Thomas Shelby: Sangue, apostas e navalhas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc8c48f083124417292b710e959f22d4c391a7567353e986d965381a49ebab. 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/QZDA42384299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a94566fdaf65583f52aeb085f01976ba34f1dc111c804953ed4d983f4e9b83. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHZ62176665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7163d6710594830af9c0841c122c54947cd1fa4414e2d6498c4eadd11c2f64. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXIV82433504.