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 0x020b5c989c615a7f411ace33ceb82067abf804649ee37a0e09f18b21aef7e4bc. 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/aff0ad4d-1a83-40fb-a692-a29687576312.json and https://artists.proofprofile.net/proofs/artist/aff0ad4d-1a83-40fb-a692-a29687576312.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 0x063828fea9c09f53a5d5dce4a986311dd46568f0ae243f5ec37b7aea64b19b3a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH2178445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88d87d5e0e50a53e35c7435cfb4e4d59e86e383e1b43c6b4eb9088da988ba97. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:44Z), 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/USCGJ2132361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bccc0a3a8069a7765a24098b56adfa09a9a60f18e99827c61ad708314bd5189. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDY42254035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaa2969d4bb49d15aa8ad82d07ade6458c7de79e90acb9032c1d9f5f154067a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX2R32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0e50786bdee6f0597fedfc00dd69552d14a29c68b70a59829b1b7f94b5d3e4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX2R32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21508f59780af4869a9a1bcd010bb4f57277c5465645c61477d1098826417d7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX4FL2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04ea46d8fd1d8e34d33fb35d8853c13f5a5431244d6a83d263ccfbf35e624e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GX4FL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d0637e284cd86c617d5827a6533ade32f854286c915798671a7b347bb2406d. 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/GX4FL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052284e357e6c44ffce70a7f985dc3c1b423a4d10b404ef240e76b6c90e81ab1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX4FL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005ab44c871ce9148f9297f29cc261fcc98cfba1058f57e285549489e23eb4e. 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/GX4FL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91884276d38530615d42d0c6b4981509bce98dbee5b81fa46cce996583ff41f1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:14:43Z), 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/GX4FL2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe210b3c5cc8acdebcbbafcf9b652ad46c1acde34e0cc10cd1b53eb448987cc0d. 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/GX4FL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae68e812ee923455975c290e7e309662b43538688db9b25f686b67e6f8601a5d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX4FL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1526e71a974fc6c0753356a37c86f950198b8ddd5fd758e445acd089b8ae752d. 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/GX4FL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf725960088a84e0576c65682f7bc7eb47b7467ea507d117cf282f3c3ff8a9393. 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/GX4FL2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4684837e405828cabf5880f31e0d5f87cdb11b915615b1d4b034411441bc0706. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:28:11Z), 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/USCGJ2521300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee26f04eb4fbddf92adf15ea4c160655da41c85dc9de009c38617421cbc84f. 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/GX4FL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25e6ab4154172c2e142637e7289ddc8ce02757a3303c0de3d9e6f0f2ae3b54e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX4FL2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed27eee03cc1afe6f3da7196fa3113ae2de745bc5631d7cc98030a71d585766. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GX4FL2500003.