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 0x0be09597b684fca7fea8db11c30d554f8c4d11a993bc8607d0f556e6c896115f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29238b53-e344-4db2-ab2b-5a1663b228f0.json and https://artists.proofprofile.net/proofs/artist/29238b53-e344-4db2-ab2b-5a1663b228f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
God Save the King (Proper English Version)
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 0x983f286d5e97d81686037c824292abefa9b24370ac5f8c100ac50de9bd2e2b4e. 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/USGH60610051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e10a838178efeb8bb2f75ddbe2c99e6852aefe4a6a1fc4e8dc0b1f7e75952a. 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/USA2P1255419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a12101ff04ecb16df9e95d49858c9231ef379432020cd8008a63d095d2eca3. 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/USA2P1255427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec76b87df082a91d9df16d63c71feb77a0349846d94ff7a1208c01980f31371. 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/USA2P1255420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc813292b2f479e8aed24d8365d7584ade8363af9d61cd52c5f14092e732a38e. 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/USA2P1255424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d2edc0c18410ebf6bc9beace325e2f5fdcf6e000754508f9352f1e09eb759. 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/USA2P1255428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ede7ccb9b04bd235db591e2930e816b552342995a3884fd6f0cd96c02afa01. 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/USA2P1255432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d57b1a918a792708d565309a3bcf96421ef71c651c01230ff7e0e24d745c4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHKR0973119.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397878ad9c99cff3eebe206ad8d175cc5165050a03eb07a673dd584cae6505fa. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USHKR0973114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43f18b9a04f3c62f631d0e32faafaa59b51a9797d8aa71420570f02d6f0394. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USGH60610060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec86cc77a42294ae57397f475cc003f1e8dee34064e124ab0306d9f5e24681d7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USGH60610062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08600df40527f9cb28dc066c7ed1dff671a98f4a85f13fd4fcbaebed5bfeb30a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2P1255423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db78fc3c020b5f9d5488bb9ab72fc8eabfd9bf1547a83df426920b9a7a67617. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USGH60610059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9401ef581e979ce901c043de80017d185991855d6ce37c1db3d1a4a3c16d8d80. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USGH60610072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abf61d0b631b45edd0e8d79eb58cb71826611d3f1fdeb31799ed03c1dd7471f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USA2P1255421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215998d14cc58624265502b43516489760db9f9e6264852db38ee32797bdbd51. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA2P1255425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28cbdb5f56b6aa65099b8cdc3f2c8e609257f22759ca7008fc2261ff555784c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USA2P1255426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f0a6b18b8e371bd6d66f21b7bb2d9ab906826a04928d91a4503f571a57b08e. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USA2P1255429.