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 0xc8ec41430e3c64c83b8676ed35f38b19f03b450da7ba2e72959a4165eb98d01b. 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/bdc626f6-b3ac-47f6-845d-006821aeb9ad.json and https://artists.proofprofile.net/proofs/artist/bdc626f6-b3ac-47f6-845d-006821aeb9ad.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 0x728e246f7f8ff91eb561ff51313ef7a0e373e15730f6a5d1c0113961b6410416. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNJW2409480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa881b213f794eba4b68a85fb49f4ea08f1a00d45e6a75b560d0d117bac57e3e0. 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/QZK6N2515918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee28e379893129cd002c73126a02f8136e75bce82549fdfabd4ff180a25810f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZGLS2551859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95615d46d3d06f96e6b506d2f2cbc2e48ea542a9f549ef5d72fe42ce80b8acda. 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/GXD7G2598632.
22 Meu Vulgo, pra tu ver que eu sou maluco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b2b615d85f6cca9999711a1f76e2bd36e0f510a4d3dde24990ea1f397eea29. 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/QZK6Q2532359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb688cf545de757bd9d65b3867d7c28276dbf05d5770990cc8e18ceb236c8ee57. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZGLS2521350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bbd3f609b85bc3998b534744489a55a7a9d3fd8d3efe5a2756e9f5260ce753. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZGLS2547593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a6cbf34b3cea244b90e7d005d86cb2317a8da659ce8b42c67c92db1341140. 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/QZGLS2547592.
No Final Vai Ser Quarto Escuro Tesao do Crlh e Nois Louco Fudendo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dbc82f99391aca8cfadb81f905248a7eb117cfc204b8b425f0466989c06b1b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US7VG2566007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487190247eaa1fc707faf5c19d6184230f00e4a82d14700f7b7839f585e85f35. 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/QZW9L2493137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680878985805aefee8d34334eaf8ab0ea53bfa8b0e08fde434bc6afd354b5b2d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRYPB2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef6947f3f9c575da390e42e644c5c733e8944d957c2ef283f5728ce342ab2f1. 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/BXTRN2500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc20975a2c26222bececbabdced82cb1ee78036b02dba0a1b1a9f2c24a6674. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMZ92470033.