Equipment is a set of tools or other objects commonly used to achieve a particular objective. Different jobs require different kinds of equipment.Steven Nahmias, Tava Lennon Olsen, Production and Oper
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 0x76d8c0bd626e0a89335ad5e068694fe3bc03610b9f4067eb039f5ed4b0f55978. 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/284a1809-4f03-49b5-be92-8d7a3f036daf.json and https://artists.proofprofile.net/proofs/artist/284a1809-4f03-49b5-be92-8d7a3f036daf.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 0x409a41265226950d03fffc371d424ee503ac28cf89ba28263c6f3acd16071bd5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZ4JJ1605552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ffabc9337c242203db815fa5ce688ec3f30f670b24675a8f22788e2783f08. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN61913309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef107e6b21790506fb507db9ccbacb18ba7d6acd3807aa81513a2ceb7675670. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN61913311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f4aad8a6237a5c88c24e9553b8170a3f1a861928489b2492a259943ca13c51. 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/QZHN61913312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5b1416bcd235885eee7e6cf0957182f95d83f340a38554b439b6c3a113525. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QZMEM2088426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03258d0141f8967b0a97fceace015a0c84765bdc2a72c15cab28077c8332054. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZMEN2039912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5b1416bcd235885eee7e6cf0957182f95d83f340a38554b439b6c3a113525. 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/QZMEM2088426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03258d0141f8967b0a97fceace015a0c84765bdc2a72c15cab28077c8332054. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZMEN2039912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4898c128c5596923ffe5c18bb551ea6ae59d4b4e6c00053c57da6fb833ae4d86. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZMEN2039914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f9338f5d5ba930f1c2b8ee14480e3d375ff9c6db83e5b9526475ae06413f1. 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/QZFZ72387091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d16021e1f42a48ca7a151f1f99b4476295cf3a61e1da1149afafc140a38c920. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA72314860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f9338f5d5ba930f1c2b8ee14480e3d375ff9c6db83e5b9526475ae06413f1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ72387091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec158de54695a8aa66ccf66910ec126e559755b8ee4fd14cc0a8f1141595a228. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWU2372389.