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 0x1f85023967b7fe65441b1143f83d6f43639bf4f0e69e82fcfe84b4bd324eddaa. 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/5361f289-4ba7-4ba2-8850-27fdf4bebd4a.json and https://artists.proofprofile.net/proofs/artist/5361f289-4ba7-4ba2-8850-27fdf4bebd4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mtg - Prazer Sou o Dj - Fode Vagabunda 2 (Repostada)
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 0xe76b99d57e21ade93fe530eff48def48bb70cd6c3157f9fbd49cfb01fdf6e28d. 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/QZGLS2325762.
O Tempinho Gostoso pra Fazer o Joaquim (Eletrofunk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f70f9dd4270b0b23daa72f0b7adce582ad3cb7c4bc6e01ee4b7e4393934bff. 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/US7VG2381660.
MTG - Vem no 4-4-2 na Formação de Carnaval
MTG YOU POWER x TOMA SOCADA DE 4 (Versão Bh)
MTG YOU POWER x TOMA SOCADA DE 4 - Versão Bh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea4285a854fc71dd5a45f3ceef27614cdf9574b92da91271fc7fdb654309403. 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/QZTAS2430198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d029dbe99d37d306af34f6b3ece948dfc84a67809de96fdc56634caeacc2e5f. 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/QZWDE2429182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5ea1c3fc0ac8788dbff65355f38f04610ea6463c01489e99626ff53cae0b41. 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/QZWDD2437256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b11fde1782aa6c995edd982bc31081881ea15107382c26399a2db90dc5666. 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/GBWUL2422225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53e03cc3556248c028813809c6f40d47923b493f588d0c25e60bbe8cf8c0807. 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/USLZJ2421782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4515f0c99e05add2cc34ac078d7e1faa01b136b797498f2f82d30607020f3855. 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/QZGLS2441713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425ff3449833ba8f0c3bdbe737b48c3e0d72fe67f3e4b0d9ef0e5bef2dd58bc. 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/BKFUX2301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eebd7901e935da9e65f28d6a807e7200f7b5aae1d124c5b1228cea46b28e97. 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/BX4IU2350486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa651c11c1ccde45efb74024a8cefe6fa517e80d308740a1b9e33a364f78175fc. 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/QZZ8B2316701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f1db0b1248ddb7ef480e3410db31b6ca74c426df2a5a6e75e70b4799bb9a4. 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/BX4IU2302621.