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 0x84dda66b4acf44308d039069e6c57acf8532e9e4698b1cf78439ee743e3e6b7e. 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/3789441e-a533-48b4-a625-038a512232bf.json and https://artists.proofprofile.net/proofs/artist/3789441e-a533-48b4-a625-038a512232bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lofi Hallelujah - Quiet Faith on a Worship Journey
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 0xbb3f937e9581ff55762aaad61dac0a619f5a52364b47727243ff2d90ddb6a851. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/CAWK52465521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c25db62136e29865b7f74548c958a4168ca9580e6a8c896ba6cf62d7e5f8411. 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/CAWK52465522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d7f41732457148e1e84e9d7924a09fd8dc5fb62e3f89aabbf6d5713c97343. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAWK52465523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13195028ed07b7a1cb5a4720bbc94a233a700b82d75219f376880f9dc058005e. 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/CAWK52465524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eeef1a2a998563bb5ec5b12f29de8b6d06b0db10811dcb98a067c0edbc0d35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAWK52465525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052952d8ba61a0937e94a2f01d1ed384618448ab985b00b292da96d3ebf2052d. 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/CAWK52465526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9754304af371235d5d543c2be751d3bc4061791f79459bd35b5a6b164a97aa43. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAWK52465528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b1cfd45d00ad581ed17adc9de3cf5212f706648bb52e648ef8a62453bfb9a5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CAWK52465529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2477d27816a5a063cf80c11fcb50c25f777382f03ac2825f24d599b6f7b6ad. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/CAWK52465530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e51e82a7bb59ae8e4e3b9c0b4659e1fcd2be2c8b56f23fed62f845c0f1dc76b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CAWK52465531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41cc6065ce5fe7d5fde645b0c643213fa4a2b457e4095c6ff6d3fb2bf7a6cf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAWK52465532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee40ee4971b5378d7a0203ae5bcd87196d67306a2d1f99da3830b5ab3e4aa5d0. 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/CAWK52465533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaddd92b4b318c03439791be8ee7aa8fd16ea5b9cd260048bcc195b3137e2caf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAWK52465534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214b16c9e2fd0c376b75fc6c628bbfc5537a6ea280831cd327479e6262cbba52. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAWK52465535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2f4c4658e4d473f80f13be1c9da9d648c0b3f8904538d7b07f04744f8881b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAWK52465536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996b144631c4d7118c21f3a5ad566f7a7777e238ebb9c54de3056b15a1b15af. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAWK52465537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2699852ba8e1ae707b16069c39a823c721f2580d5d7b8f85fce7445c8d0c082a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAWK52465538.