THS may stand for: Education Student Union at the Royal Institute of Technology, Stockholm () Tiyan High School, Guam, United States Travis High School, Texas, United States Transportation Toyot
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 0xed0c134485a371e752cb8bd20e6fb94fbb79a1d216fe07e7903bd23eaee6ad1c. 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/9a60594a-8181-43b6-b65e-5d1e2276c226.json and https://artists.proofprofile.net/proofs/artist/9a60594a-8181-43b6-b65e-5d1e2276c226.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 0x2d43080ef4b27f93ff666a595f0ce89f3d9c02e237cc01dfca3d358e2c193ad4. 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/BXBGP2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa50379456425c3497a89ec09bf6d7b44465606b7f5dd40a10166d4a21b5561. 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/BXBGP2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643947c4d8e8cf36ab3f567a7c74fbf8056e20df304aa46552c9efb20d7b3d8. 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/BXBGP2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b2f0d4ec145acfe355d80d09522b7b3ee8ab389baa0aca8673a8d2ee5e0a77. 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/BKWOR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41461fdfbdd2ddb425f1b4ecff6aab555a10a601b7491854e06a319c1a49c04. 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/BXBGP2400024.
Primeiro de Maio (Gostosas Inteligentes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3dca498c1c6a7b1f301e08d7b9b553ad5cbf5cf933fe0bea72f28ad8aa2d8e. 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/BXBGP2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653db9de8d69b0e78c221aa3e25e87a2f88b9568f08d85618c5aa84c36f7ef46. 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/QZNJV2367926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c523b3bb1e4c93e9ffc8676bfb1f24fca981b9faa56f5a21ef80ab4c37574. 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/USLZJ2327562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c73c00996a674c336380978c433a6aa5010a6f808d37751e980794a2475d5b. 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/BCCNA2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643947c4d8e8cf36ab3f567a7c74fbf8056e20df304aa46552c9efb20d7b3d8. 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/BXBGP2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5100043819fb27f73e8af018c9dee88d0f9da9527ac06949de7b8d0ef2eb53. 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/BXBGP2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa50379456425c3497a89ec09bf6d7b44465606b7f5dd40a10166d4a21b5561. 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/BXBGP2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41461fdfbdd2ddb425f1b4ecff6aab555a10a601b7491854e06a319c1a49c04. 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/BXBGP2400024.