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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5828c5dbc7793828db9872912206cbdee369dc58aa2c07bd1be6bf93d859f. 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/f5477010-44d1-405c-b118-b1da6070433b.json and https://artists.proofprofile.net/proofs/artist/f5477010-44d1-405c-b118-b1da6070433b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf503502f7c26a5c0acb79d85854bbda8ce6caed5e89e019cea5d998944ca5af. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USA2P2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf5c4cc4b2c0bffb58e1e0c00c6da64de7ca14765ac5891016d207ac289e423. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:28:31Z), 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/FR10S2381047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05efd90e8224322106eb0c33a45541522c7804f893737c2e0bab8b0743141745. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/EEHU32001334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b6b7b68899c411942b578e708530fd9ef423d8f3215e35669389c93ccdb5b3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:53:12Z), 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/DGA0Q2369316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d701506f08b711ef0047e603776efba3041b6ba73d73023233815e4c763d2. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DGA0R2334716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e6482b58f3a686030e387136924fe21ce0471bb98aaffc0d472a81bc2da9c3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:47:18Z), 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/TRBGN2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3d6d8fb6e00bec4f969a69f9adb3f8c9274a4571965ee1108e463ab0a5caf5. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRX422455517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b3581acb7061744941f66ef5cfd1f249e6e641e5998089c21ed6cb350f537. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DGA0Q2484153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fbe2e87bcde2f4beacfcf768f669013c54a70ff157fa9aa98e4b3a0c6d5b7e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:54Z), 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/DGA0R2410629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d03968082931c9aa019aaeb23aef3ca7ba0cf951802bf40033af12ce6d09e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:51:02Z), 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/DGA0S2422262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dd751140f6519b2c2c32fd4c29865b09e87a067b5b1c0b886df58139b62d74. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:58Z), 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/FR10S2506297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68453965ca207a5c6e0477fee3dd921cb3f295abe9e259e41b607f3cbfe1143d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:57:04Z), 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/FR96X2544872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fcc6cca35909ac830233b6e15f4070c088aab8b28c3eb803539ba356b1cd45. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FRX872507949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbc69bc41d96d0cfcea04bc41ce7b458724733f9f3a6db3b752195572a51c79. 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/FRX872533926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68c750e053770a04a1e7310fd561f7023dbbdc50f85cdd5d951876e82fd9341. 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/FRX872535730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153531f7075700a36e40e81f5b7caa6d86206b320c46cab242d681ec598ee33d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872597102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010e3747010a390f4934928ce80798220de75670a3311203fb2c5db73fc1b933. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DGA052530823.