Tolex is a trade name for a flexible, waterproof, vinyl material used as a cover material for books, upholstery, guitar amplifiers, cases, and other products. Tolex was filed as a trademark on Augus
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 0x8b154712d6038a2e70c7e27fb226bb17884b9f0b38cb83cf7aff2bf467b0f529. 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/ae11e300-8fc0-4587-8626-a3bf7c5356b7.json and https://artists.proofprofile.net/proofs/artist/ae11e300-8fc0-4587-8626-a3bf7c5356b7.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 0xb22ba28e02110c60f94eb2da2a1f39d403ee0cde07942ee6b03d9bb4d2ed588c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ8B2340879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690f6e0f5782ccd67cf40643d22c7ec24f5e30bbda3f624fa932f7cfb73132fd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBWUL2409079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca649acf592bce89e75622dad4ff70ec178f5cfce8c31bcf48eda0866b5c9df. 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/USA2P2414008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55be8fc472932f2322b572dbedf75ac70ee03bd2d66ba83510a94465916d008b. 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/USA2P2414009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4307c7500c1a4676dc10a1a68ae519d1f2d9dc38526677be97e74a3bdd367d0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCCNG2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137497e9a72789901dd968584221f62b819f28da27756217d31381f25f7659cc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BCZZU2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffa8bb5953448bf0956095dba3891c0f203efb500c5e3b23b38fbb7352b25f4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P2475156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffa8bb5953448bf0956095dba3891c0f203efb500c5e3b23b38fbb7352b25f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P2475156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4419e2bc5e75288dc5db238a274fd591e606b02e61f082f1d12eb0c94abc9745. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCZZU2500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0c60c24df3c66942117c22578a4104e3c609f69895b12db25810780c01473. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZGLM2409820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49072ecc19b56862af3e49b70c7affc6e09edc4990068a146cc4bbbaf557f47c. 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/QZN882254114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ee2d4f0f26a0b94e17207bb454cbcbe5bac77f9c6fbbc6d69c1808ecb5836. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXG9S2400017.