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 0xe972adccd9750b98f9aeebdd1f4aeb8c3900f7add1e4427a827acc7cb5d42e5a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7586af6-4d6b-4f95-b894-924643730571.json and https://artists.proofprofile.net/proofs/artist/c7586af6-4d6b-4f95-b894-924643730571.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 0x34c5042a1978709e8b7e614f93b6f461265e4aa12e9e69e2c4b67adba26355f2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKZGC2500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af31ee424d6da894e9ae87b6a719bbcb1a9c410f96a650a4e344977ffa9aaf. 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/UKZGC2500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f859f2a64fb49f47a4b56943e610e8bda3950024ea5c2a494fafe17f41c41fb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:24:12Z), 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/UKZGC2500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5042a1978709e8b7e614f93b6f461265e4aa12e9e69e2c4b67adba26355f2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:25Z), 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/UKZGC2500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f859f2a64fb49f47a4b56943e610e8bda3950024ea5c2a494fafe17f41c41fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKZGC2500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6601f850cd717599d67e882c5ed96228a9f5e5e672747830b9931b6223fc57d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKZGC2500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af31ee424d6da894e9ae87b6a719bbcb1a9c410f96a650a4e344977ffa9aaf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UKZGC2500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7bbd7b7d4ef5252b153751bdc7b675ad02da9394d9cfe9dee467b52099aaac. 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/UKZGC2500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057ee311bbd8988f434a5bd11c01f137efc6efc163893bbb115c43fb00319190. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKZGC2500662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be89b9ba76d95287cc548285e3166a3981d656e919299a4f3b4a1acf1e9cdea. 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/UKZGC2500663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2eaadb56f0148eefadf5b3640bfbb02213024b8312757a9f0b581bac2215a3. 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/UKZGC2500665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5042a1978709e8b7e614f93b6f461265e4aa12e9e69e2c4b67adba26355f2. 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/UKZGC2500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f859f2a64fb49f47a4b56943e610e8bda3950024ea5c2a494fafe17f41c41fb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKZGC2500658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6601f850cd717599d67e882c5ed96228a9f5e5e672747830b9931b6223fc57d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKZGC2500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af31ee424d6da894e9ae87b6a719bbcb1a9c410f96a650a4e344977ffa9aaf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKZGC2500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2eaadb56f0148eefadf5b3640bfbb02213024b8312757a9f0b581bac2215a3. 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/UKZGC2500665.