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 0x2161da03b73d3fe3d77aa68fa5956190a9e637ca7c0d6e1bae5e48549e7df470. 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/e9004dd4-63e1-42c0-9efb-ec48ecee5697.json and https://artists.proofprofile.net/proofs/artist/e9004dd4-63e1-42c0-9efb-ec48ecee5697.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Figurines, Or: Streams of Thought from an Interminable Period of Identity Moratorium
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 0x72178002f922e7649c9d01bec9eb5176d4198f4807e7902055c269d59634c42d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM3WR2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571dcffad006f5a87ea4a4da83329f5bbdbe925dbeff52d7d21e6ea9fb975159. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZNMT2229504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04685075b00b14fe4bde5e96c134e0ef8353956960b244ad8b6d621b5b955774. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEV2263673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1c1fa74c9469f33a5bdc6b3df34dff15a4ecd2d4b0af9bfd6fb6ef11e895d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZNMU2475286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a127fe18f9f067e9c009b1b67793a0789bfb169773640410e635db152d111. 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/QZNMW2491728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f8fbef1b67f5713951973891cb5b4123f3c57ce966de2966b581b5fef574c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNMX2464871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a955074bedf14a03f21626807059c7d61598531083cd8585d0ac16672157f5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNMX2464872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483e70e9177f4f84a3991865c5b7f96bf9d8e99be9f601005d7cb1c41470827. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNMX2464873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca607f9d972990cb97ee985f66b4e76a6b4db91f809b5573126ed054f6f41e5d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZNMX2464874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd5ab022be58db0fcb9dca204b70f9921f8e7b0ddd48b92ec3d45d8303c0fdb. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNMX2464875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f805f7f9bceeb1787c1f8e8cea567c80f1d05ce365d28c55e70af3755ce71c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USQE92500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e29e5d3dc7e55be0b3dd4e57a5147434c1204b2e0db86f6d4b2c8640741153d. 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/QMDA72414964.