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 0x59bd0d3576e50fcd89a6276e5d421b5407a6f8b2f9d0a26960f6a22c76a3550a. 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/953f1afa-6a07-4473-8c0b-4ef5525f1a57.json and https://artists.proofprofile.net/proofs/artist/953f1afa-6a07-4473-8c0b-4ef5525f1a57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Forget, the Words Are Not the Reality, Only Reality Is Reality
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 0x55a349f64583fc19bf55f0f2564d84f7d5c566511af22af3d35f149077910d11. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHN91930299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfa54522171ceabb0b46f3c858f100df82b9d12f936dd6525c57c4ce4783e71. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFZ22054986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d09288c6a6dd754a9398742ac5649e88d1e811493873108e299cf23dd291226. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRX282128143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b85502f604ae7c2e794c9ea32157d53fb0bd8a730024afdb9a3112b0710b4fa. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/US3DF2246274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8862442fa9e7d6ed95d3fa1d74f551d17b40df0c8e627515fba9c68b9e426936. 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/FXQ892200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c9ff8dc07f00d7871a6e7752c4a5f0e8c7327e532744df9961faa65f91151b. 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/FXQ892200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef2cb5a02130b8aa9427105783dac0ccb142b1cf682758b43726d52889dc2b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USANG2253009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf16fb47ec3d61fe787491e9bd40e620711de747c5cecc2462585ef7a9f881a9. 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/SE5752372122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca80da2aeb4cd6b914376340f7555ac224de0e6a089c22526451445158202f68. 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/DEQ022381210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887f6817f6d4ca59a8582203a506bf191a8cebf5b7746bcbc475ace1ee0717f. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEQ022372676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d6c96fb9c2aecabb7ff55d562cb51942d9f4a6907f08e028282d7c597dd108. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM3DF2296088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee8fc01d65ab741a3a25c062bba05c2afe2dd26b9679023be3fbfa212153dd. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMANG2253022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7087e728a70c42d95a15736815be1f52e6569ed4e76aec9b8b36e2a2a770ae. 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/USANG2449532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b7d9424c34cd9692b6d0b8bf9c130fe390a11a0eb7899377cf25540bef030. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/US3DF2567539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12470dfdf9498e39233497ae3f169419f5d24b1fdf50ebf51bf83f958b05831c. 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/QM3DF2252659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294e0fe92d1a7b91cd8786025301e93e75287ffe977a04f50dd47326f63aed82. 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/SE6I32450397.