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 0x066a9cb6fb65542a445a9821a3313d26bf66955403913674ad77ab92de35a78a. 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/0b27d1a9-e704-4f3e-95a9-37d8f8587d1f.json and https://artists.proofprofile.net/proofs/artist/0b27d1a9-e704-4f3e-95a9-37d8f8587d1f.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 0x090adadd89d92803cbf91d752472f960194d8cc8792f0e7575b35bd3712543b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2832011115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44feabe4d1edefd83e2a2b8c674c8216cf78a3dc1803bb7eb6e4d56ee1488ce. 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/MX2832011121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe107a2a5aed9062aef68e73fca489e05e4739f91dfae7961dc14a3fbf1fc786c. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:35:55Z), 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/MX2832011127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd26e6f42ffe5c6eb7f5b1745baebdfc4b2f3ba1d77c4de26f67f4f361e8af41. 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/USDY41670039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148dd944d43ba81219d3a0bb64c59895b4a64776774aaf23eca18eeb432fc8fc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USDY41670040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63286162e8a9f3b8494a56daaa00e1228ec3a1bc58859abadcb24a1c61d881f4. 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/USDY41670042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ea7454532a9e1aaba25aabede8ae66ef55ef4f8abaf9a058896920f204b885. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USDY41670045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387b7e69f84aee0f3eae2759c241816d5fcc74ec599b77176cdb3cae42196f52. 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/USDY41670046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705a0bd3c3a99330cbbe764a990ad88880c96595ad04aa2bcb7a0fd6534fdfe0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY41670049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecc63cd790d0bb34d42e61bc9bf54afbeaa473ff015742d056a0f967baa36ce. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/MX2831910822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad83aee77c066356809033635e030650649d8bcfdf48d6788cb3cd5ddf826c3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:06:30Z), 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/MX2831910823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af33e70b8c34243b409c4bc6e5d7a1430802e6a0c211ea2ca47701b66394a9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/MX2831910824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f88fb4b3bdf178adf7960653dec3032b585b411931bcf138faf0355c347f46. 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/MX2831910825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7d28a62431548ac224b6e4f3d71efc45448fbe83b565f7635a24cb532328f5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:11Z), 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/MX2831910827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c1d3dc4e46119276e9d310041155630bee52471d08d49b20339f677b98f09. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/MX2831910828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5992f6dc260252750e685ae4e87a9c57eaf2cd18b29b6bcf8e520853b3b68089. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/MX2831910829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67cab5f7d3d8c27a6ae37eeb9b984e68c2de3ab5ed1ac7e5b5f22fd2f0c40f4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/MX2831910831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d191d148b7f08510475cce1590d89da3771c5a90fc2235444931b622015490. 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/MX2832339990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5964668ac38b86eba18b07835b16c9c9882abcabe0f61bc62d332ab7883ee. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/MX2832339992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af4070e923eb7c9dcea866b4fac4fbe05bb42e666a1a61ccc4be27e496f5ec. 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/MX2832421566.