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 0xac598448c34439fe9b7c96814b274849d2a04214a9e58b82241a7b805e3a23be. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d24522bd-73bf-4147-bf8d-fb48b2d35f82.json and https://artists.proofprofile.net/proofs/artist/d24522bd-73bf-4147-bf8d-fb48b2d35f82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Remember Pearl Harbor: Classic Songs Of World War II
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 0x3fa8cc2fa4eb85076ec50fe2ff64721d8fab1e1ed02a319a051280df3fa0f115. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USRC14207195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127190aee224f7730eefc5ca865d21da132e9103de9431f846ffcf8e2deb985. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC14107191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b85ac73eb9ad07a01050fef763eb8b50855659e5663c6449f6688422b23e91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRC14107192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b20ce5c7bfd3eb19fd18656e3517a948c58248d32f32fa439858558989d778. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USRC14207197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5d90555078d5cd023326aa947eccd723c1c5b0c3c3d6e6da2e94bcca4745b3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USRC14507205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5474282e55e52e985d3096bc506fd62fc7516288e139399dda53acc6acb8c01a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USRC14207198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e2a97c38b2ddce7b9dfd2460a47ac137190dddd9f61b8662ceaa2a9f572282. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC14107194.
Three Little Sisters (from the Universal Picture "Private Buckaroo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6a0b39ead404270f26f70a487ca38fd485af444078dcab642b3dac532b8950. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRC14207200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc295991588489c02af085ae37797e7c5c4013215ddcb0fd134ab28c1877374ee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USRC14307204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa760d59c3866abd9be5a2e0661993f582002ba49f8404cb7b168108d571f21. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USRC14507207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde89be99a2601188ceb3dec68a1182c6c78d89810f4bc2acbfb9983e006b2e29. 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/USRC14207203.
Kiss The Boys Goodbye (Classic Songs From World War II) - Volume One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0acfee8d9f17573ba9bd3faacd1ff580a0be5a897b70f09c95e3930dfae5c1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USRC14202522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc295991588489c02af085ae37797e7c5c4013215ddcb0fd134ab28c1877374ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC14307204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa8cc2fa4eb85076ec50fe2ff64721d8fab1e1ed02a319a051280df3fa0f115. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USRC14207195.
Classic Bluegrass Vol. 2 from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b60665309d27a5b5b292027ef53e1d4a3a3878b0420cd3d5e4be7b2c15a11. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSF10516305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7433fdf737c22d81549c3559c5003bcc9138e86ab36d76fc3dbd5acfdfea20ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USSF10516308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99698f25aec3e8357a38b7d79b19c79b295fa0c0c6dc52059814687254567d9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSF10516323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2a9b3ae4fa14027d8a3773e2e2d6f0c1152ed52570b4b66d7ea9816ec6d908. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USSF19103821.