PowerPlant is an object-oriented GUI toolkit, application framework and set of class libraries for the Classic Mac OS, created by Metrowerks. The framework was fairly popular during the late (OS versi
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 0x58f5c3075a4a022b04d880d545d59480a5beb2515af262ea6a584dc708f25161. 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/bf42f18b-bd96-4ba6-a30c-6b4f287aa691.json and https://artists.proofprofile.net/proofs/artist/bf42f18b-bd96-4ba6-a30c-6b4f287aa691.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 0xace512f2070d61709ad521c4cdf21fc79cf4ff55bacf1635db370607c5f7a2b3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN61909092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f8b461725fd236f598c6323f2a2bdd85722e861eaaafd6ccae9ef756a0e090. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QMPKX1818252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d92b2b79638cc5fefdcb1a97f1fa8914830330162e8c6f8f5c5532072973fe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMPKX1818253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a3259a81e46c376b223c4157a90f06845028842f0180c04e9b1697ebddc654. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMPKX1818255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ecbad5e7ae16e9926ec66622f7bc935933b0ac16828942b6e3cd1bb044e290. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZMEP2279756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a6fc1469adf45c9e3c0dd83913c9478da262f48d52754bc836ef31d652394c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA71946941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d0176e3d14298828571414ca91c08cda9540c8c0baa14ee9993037be397dad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA71946943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5906f574be11732262d2981ebc77df262c94075bd6bf6e82f09392872aefbf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA71946944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae7c90038435b62be8a4eb88eedabc6ad2c322e071324b577ae049ae3da88a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA71946946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94438a7e345dfbbde1d70b449e1482ed9672c91b57017ece643f667c1aedb40. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA71946947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9781e98eb1627b77ad404ef587487cd2bbf9531fb3a8e0af748771c2eb27117. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZDA42003395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ac75c1c09dd09d0b8b363d0bdd9c30ff13edc5ec659899fe679b82ed8271ca. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZDA42003397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40eb1f022c5be2aed277c90d5dc88bdcb31f4d75c15da35872fd600fdf1a09a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAT2187034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d4fbe24fa9afc417f34a5ca34b7a6b6f9841a5f7f431f8ebeb028142078731. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZFZ42303198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60edfa781b2aa954dc8542dccba76cabd8f7350d1d876acbcb3f58111d03f8ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2364756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66c239cc7bbb22f33f4f0d00cdb9e87da809044bc9baddc619462eb650da897. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N2340112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa21c3a4e8908c5a3d4599bd0872333e5753cc39e0e69139f66465e062e614. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTBC2352511.