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 0x53ec509249d1434e0fedcf5c7a750d7d97b049af63cb7b9a946c0f8746667701. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9811d612-efde-4871-b734-96b1718a8ee3.json and https://artists.proofprofile.net/proofs/artist/9811d612-efde-4871-b734-96b1718a8ee3.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 0x5566ee42cc29ffb8fd8c6265621a9d5413560dbf0788c57781503477c5328df8. 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/QZJPM2401974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc8b74353233a2cf8c820151a15952552fe7c765bde67c3dc6401a996476924. 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/QZJPM2479611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce052dd0cb96eb8707bd47cd1538e14f3182baa2349c204fd3aca509780eade. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:44:40Z), 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/HKG732136859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccd4f9f38c8b36fe6930136f7131cec345756cff8f04f53a3ff8d515b8c7fa2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/HKG732149332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb851f02e46a28a51cb6fa630286c05b9f32f3724fd0efc6e95420268683dd3fa. 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/HKG731721941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71117b57fd302150c623b7eb1ebae1ddfde4b6cae313a7dac5e3069ef3f5e845. 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/FRX762214400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ce45196a326fd8285e3b6133d56fe7780f88fe3bbb8a30db88e31a64cbc6af. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNW72392228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbdbd276e3d293946421e23f18a58c28cfcef70779efe5de8c9f4060f726d0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZNW72392226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5c88c476070d9903ae67d7cffecf7bfa28cbb5df417843e2ff43aceba557cc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:42:33Z), 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/FR59R2370778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c689d4970e1bf2d94ff2f493cf486f3615dd8e55b51749c8566fe16121601d. 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/FRX762342167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cd75ca694d86857e351a20e85ea49a8d6209e55a5918c6295d5f357010a7b2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872321440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50fab7b42492b54fda548327c1b9be1d28aed58a6b496d9926eb6f90c813889. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA0P2353543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01d3db9cd10ca480a65d1ae1861ae1d6972d2ad06d5dfb9e9250cc2fdbca43. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:34:04Z), 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/CNZ632301367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebbdb3c1a9dd4a64e3348daccb46d519c5e23a79ecce528f81fd11783ff0123. 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/FR96X2426215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1674bc2fe2021c2fa4d80555625bdf6d50f5346562a64d18d2433cf54e119290. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:57Z), 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/DGA0S2495219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba53b8f0ca10052efaf047340ac723961507b0fbe13def76a4d01469a1a8ed95. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KJG1Z0883703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faac59b56df250cc326d4328b1ae96d0110a2504ad18b7801adab8059e0ce24. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA072432311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d29d192f94983e838cbc1d90e58de60c395a9669c4921c2f06ccff14001287. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA072422989.