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 0x813c5a7d9ff59d5a6428dc4039aca5cf4f840e84a61d3325609ec73c65a52459. 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/4e79c376-4af0-488b-8f78-0a769bf7fe27.json and https://artists.proofprofile.net/proofs/artist/4e79c376-4af0-488b-8f78-0a769bf7fe27.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 0xb5dbe19d162ed163442122478f64f9dc4cf425dd286f04e9a4a8e5506ba1fdd6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZW9M2433308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e0841d48c2001b078a412a54de6cdc8f60f05c64c577ca684f7106dd2d035. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/SGW502287802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3018e6a34980d7f91bb2a9842a7cf1872c76f108423eac2c57f32c0e53924. 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/AEA3A2211762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a31f3a0fefa08c8d367818f07b70927974e1cacc8f9613acad1d5892ac746f. 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/AEA3A2255598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86da528ddc48ec38d82580b84f016502026d05b657dabecb26e832f0ef11941b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZNJZ2276422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb68b42f6a524de2848c62b24ebf8e9fa0fdd299d3291e008e4b9eaa59fc00f3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNJZ2275916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32fb74c3df33dfa4bc4ffda0d4212b449c75b123c6683a2769bcc84dcd7d45d. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZNJZ2275905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d2a40aa1e69f216da3d82fc06114ff47b0644acfc32374b103f3f501afbcd6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZNJZ2275859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f632490744daa67968b7f73345a3ca5ebe6c410c90461fb51bdecf53ec5236. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GXD7G2223441.
Mc G3 Vs Mc Max - Duelo de Rima - Ao Vivo Roda de Funk
Mc G3 Vs Mc Max - Duelo de Rima (Ao Vivo Roda de Funk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f2577851485e5f0ffa6e4c5fd208a2df7428b0560bb55f4d32487d2ba8b74b. 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/QZNJV2224879.
Mc G3 & Mc Marcely Acústico - Ao Vivo Roda de Funk
Mc G3 & Mc Marcely Acústico (Ao Vivo Roda de Funk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b6e6a2579db9967dcdf507315dc1be3e9ba49f9bc329feae35e2f5f8542a1. 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/QZNJV2231315.