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 0xe943eb420364a5ca61f7e179484bc1af9a30c38032b247eb8ac4247c4e17730e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2853048-bbc3-4a62-9ed1-238cb9b2d38e.json and https://artists.proofprofile.net/proofs/artist/f2853048-bbc3-4a62-9ed1-238cb9b2d38e.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 0x1e5e3c344b543352f1a3977fd8c033c6fcbe0492bca29a0fa67747096e95d249. 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/BKCMX2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e8779107b35fb44e48fede5d01e51872e432d30b5312a29128c07518160f2. 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/QZHNC2459810.
Entretenimento (feat. MC LORIN DA ZL, DJ LIMA ENVOLVIDÃO, DJ 2K DO TAQUARIL & TALIBÃN ENTRETENIMENTO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8b55b9ffb40a3ab5ccb48f5d9b2462334d4b7a33c4d90c891e5ad906477766. 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/BC8DD2200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c37d2d48dbba0e9ace8c593be2a102756a03168b6ccc6b63f994956b898f1b8. 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/USLZJ2558515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeeb1ab5162efa7c9606f014c6d70386fd582ed98462f9ff13d101edcb98057. 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/BXTRN2400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81aab9738f69766fd6655fe9687908a1e1e2db65c03e3bdd91a81ac6cc3ba6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXTRN2400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd4228645f603f790f3d2bb0feabe9992f92afbe5bae0a788336cbac22a93b. 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/QZTPX2483478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248143f6082295b1163c54ffff0c4952feb7d23a1b05d2a0e7e3c217c2366b24. 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/QZTPX2470004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a49daeb8c9b9e7bae27ae7e76b8fb93bbd9f8962c8c205559befb5c130ebf5. 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/QZTPX2448127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339b10eefe59f7a08f68cb01027c0080a8583437502e9bfda3255def63b6108a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCX6W2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5e2f39c60bf7c7ecc32b7e74677b37f8cc3658c38f33da22cefecb9518cd5a. 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/BKVSN2400007.
Grau e Fuga na Viatura X Vem Ka, pra Me Dar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a855e4febe4b240098925f5808c2fd66a1d416a69baa774ce8951a3430ecea3. 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/BKVSN2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d739352386f77de34bb14b891cb68f048bdb0280aa326af12e293d8796c64b. 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/QZNJW2435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce160f7298955f2167bf56348d202df742c6cdce83371cbbbe43ac80bc1774b. 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/BCWK42400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9684dece8d8b81d81618ac3fbdff23b23c85e710def5909250a759c75ec27063. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BX4IU2313670.
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 0x850b52f3798610ee46186b4a35ee7fead092f3950944c8c52a858b9e52a08427. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZDA62388566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ce5e228ec8dd699ee57b5f73f0d67b46ce002b64653418c1b7adddbc8f9f0e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US3DF2290619.