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 0xa92dc01b437bc9ad4a02edcbeba358a1d813cae4ed791f804902cff9680aa4cd. 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/ec6afb06-a774-445d-b355-f5cc952fc2f7.json and https://artists.proofprofile.net/proofs/artist/ec6afb06-a774-445d-b355-f5cc952fc2f7.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 0xe244b86804b78fc143a262cfc0385e35fb287990f1f7823c7adcb9be14ff5850. 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/CAUM82300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeecbbc591c6c4dc47debaa655f0d21eb1837626bdca57ea4ec4f323b3ba295. 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/GBTDG1302741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8aaf1a079b2b085384bacdd42e1b0ab072768ea2991dd6368424e2b96425ae. 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/GBTDG1302742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1005ccd7d8ce5424682a34599b6f145deeee9a57ae88752915b627a84ec91a9d. 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/USA2P2315775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927a1a276957d8ccd70cdaf389a740bbedc9db0108cb2dd6cfabc9b78e095ed0. 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/USA2P2315776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3b956a8e4c34d52c869a2e9b2ba4b747da4892495ed9e14e0f3dcef7a108e5. 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/CAUM82200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af151eb6a155f474a0f9d0ab5d1b7b8475873f4f3e64ca7e60711d76de07e0e. 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/CAUM82200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f779ec6d9d85c64f9d59ec55ff38f136648c653112107bf07e7401c81e328. 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/CAUM82200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3b956a8e4c34d52c869a2e9b2ba4b747da4892495ed9e14e0f3dcef7a108e5. 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/CAUM82200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1818e70c98ed11b4f8c343aa3067df1eaa047917e1c95ca822c46855deec7d36. 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/CA5KR2178940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9f15cd47d3e8f760e3f158e0160cf0307f1d42611fb4a1b9bf3e901a7dbff. 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/QMUY42100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c013d3083fbefd40255952d3dbe11c12003fc6e6c824a5184ecde2fd4598b. 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/CA5KR2081556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1045b298adb95e322e73e403360698cc64e6adc0e2dfe562b2596d528059d535. 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/CA5KR2057473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677eddfe199402963436824e0d666eccf5ee92fc9da9946db7f49b3de28207cd. 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/GBKPL1963438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bbe858eb27da55e17c9fddf6a384701a2b3d01cd9ba4ffbb74a89fffb4fb4a. 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/QM24S1917644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5076a15f4ed17250628a8095f710bf6c0cf280e0a7368270d1dfac1b32132e. 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/QM24S1917645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5436e15bbc113ef4c4119b1a7372f7f947dd89e6f2ef01432946d94ee7b35071. 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/USA2P2416831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb4fc10a6338b4b1fd0b6ad3d52b24149a5a186b4d2ae0ba9d9e56e3be8713. 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/CA5KR2289330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ad7d80ef851660f1858b0feea410c59935ae2fcdcd5a6ce6870faa3026dbaa. 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/USA2P2339523.