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 0x3de096b095e3dfaa81e87a314f1f04f29a3474329a4260d492386549399b9d36. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ea575f1-f283-49f1-8a11-3cef56fb44d2.json and https://artists.proofprofile.net/proofs/artist/4ea575f1-f283-49f1-8a11-3cef56fb44d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sunset In Tembisa (Incl. In My Thoughts)
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 0x348a8f29184cc8537c9327a223a31f85e1c10ae79b9881e3f6d62c5cd5ad9e19. 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/QZTRX2495193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd07214203056630ac1a4865dc03ce1a066c18415c439aff1967792a912c8e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZAGSG2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce88e91ed86fe6ed7b8bd0b6f8f5546c23d1cf3ccfca2763b5621b9fcda11ea. 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/USLZJ2303567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeea6af374724dc723fc09e9bc2f90f0d716c4a426d8c4b1692ed7865b4b6d0d. 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/ITF3A2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70770df5432db0aad0bbfe30860800d4571258f3cff2ec24c958689fd9310677. 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/QMEU32011129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289589ed352e7c61d05e8a602857e83bfb5bb7cbca139853c9c2ff4a0ad1fa31. 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/ZAGSG2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ac82b8818d7543c255a90751bf4e6cdd6c9ccd0501cc0a207c131308a6cdc. 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/ZAGSG2200034.
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 0xdc3d5937de2cc91de9d85c7cc500ac81373ff7a52131dc9cb9fa1e0080836fd8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAGSG2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd586a822d57b7690368bfa6517f8695344bf7fc15c147f4be099b6d3581ac6e. 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/ZAGSG2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55312652b5811c792ad381000543dd1d8c64b58c2a69c38c91d108d6d74c017b. 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/ZAGSG2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a75f2bb4a8516a1788c97d1ca198dc2b290dc299f893d25899ead711df406b. 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/ZAGSG2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6865dda0115ad8cdecd99895887ceb1a319f952b7079ffe3de6cd1d32cd41e2c. 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/ZAGSG2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756fe37d7e966a3d58858da29ebef05c8ff4a3b16bc8a91a05e7ca2f254dc45e. 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/ZAGSG2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa27ed7cd09c38f802d82ae63ca2ac097c5c000e7af549ebc4931b236487d8cc. 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/ZAGSG2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8362a1b97adf32ab4c0479dfc559558f5550f5bc674822339ccf3b8b51b55ef3. 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/ZAGSG2200035.
Jahera Na - Thab De Soul'S Mkhulungwe Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ccaba659c155561620b4387001d7251e4d6cb0c1045751644b47aba9a384d. 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/FRX452038242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe626f0abd3c07345561161de218b60f2234fe8207ce26d313270ad4cf0002aec. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UKWRY2100011.