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 0x42c98375ecefa00ae850d18e0b90a69eb3eb37536cf47fa3b4fa536d60cfa9a3. 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/b6db87ae-52fb-4586-be15-713a2aed6a58.json and https://artists.proofprofile.net/proofs/artist/b6db87ae-52fb-4586-be15-713a2aed6a58.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 0x0ad00b8820be88579550e66cb66f079a1528241eabd0fc9ee0083dbb5327bd45. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INF212300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa795939167bbe93b044c97638e97b0d1e03c0ef4b10c2ebcd4bf206ecad1b76. 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/INF212300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7ae9688ed8a25426ed683e8b1cb20be9b810e1ee6ae6ce0ae4005b38449b3c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INF212200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51586b01786c378ce817092d137f5e60e902c895d15943b33d9b3967296eff39. 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/INF212200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93eb4b23c8a131c334a8838eb55c030576c6cd8e5b8e66a31946ef32357f1fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INF212200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f87c720a9c7998e7e1c8662ca2ee0f3c1ac38560c7fa39b644e282fb643278. 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/SE6SA2245640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aa470062127e65d8bbdae68816ef1732b1c69299973b3047a3425f7824956e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/INF212200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2b388fab070454c8f43a0a8fcb09848517722b06f9bbb1b0092d0025a4f7a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INF212100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082df9986caa89016cd4ea6c905ea8ba44ef0e560b0a6ec5867d870b3abf2a57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUXN22195078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7361afc63e905060c07548668d4eb51fc74361cda5b252c989e51e2fee7ae623. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INF212100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4d73d3889bb7870acdc71b0f9ba4076bb73ba776ab62288be232052af2f211. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INF212100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e30032c752c367651e40f3ec45ae6d9303e1f40d9870462e6f51c64a7cf891. 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/INF212100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bfba3b37379f404dd03ec92b131ecfadf814286cf270fcd716e02d58b9ca93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INF212100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a15fff2b83fa09a7818177ecb5620244e4af62c814e0d7e5332895cb1ff3b2c. 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/DGA0M2360701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577918ff2034f501746e349a16d3e07a5e9fc8a321d5fc3f548292abbcdaf0d0. 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/INF212200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6186ad2143c810df92bc209db0c8624497016836b306f72667b3093928cce999. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZN882175100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadeb6835d68f403dd79f3019c17f37310e71bd9e14432fc6f90f976601a9d07. 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/TCAJL2564438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061c777c6f649d7a7a077606a032de32081e37285d19e3115794637d908480a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIA2401444.