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 0x4bf7bbb05e7febe1c10fb228060a63ba4508ad7cf1b44093cecc2e8d5cee847d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a7b47af-8767-42ec-8a67-e953d89d0acb.json and https://artists.proofprofile.net/proofs/artist/8a7b47af-8767-42ec-8a67-e953d89d0acb.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 0xb68682ca2e1e08cdf3decf6263ec09b2884ac47e4692503d9ab74660dd74c5a7. 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/JPX832004068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2baf9c64d549d38b4d64477342f7b26462d75e1840adab57d36c275368d322. 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/JPX832004069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff076d7abd27e496d0561e15a40af1b2d2b3bfc1997c3795add6fbee78f29c0. 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/JPX832004070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e880a1743f07dbe0b302eefa37a2919e4fec3ef141c0b6ab6c8d97651fbec39. 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/JPX832004071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a28711c414e8d7d7892f975ca57f3d11ed24b0cbbca3dcf39bce16866c053e7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPX832004072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6aca48ff04a188223e666b7227976b17070dc7e8a821385ed532c91cf4eb74. 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/JPX832004073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a024ed9a168960f17c89127ea8c45846019b04dc61ac4c7fa2cc4c4a27295d. 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/JPX832004074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe043abe4ab9516d824acf0111b9d83785abccd15be7898dedce9cc2e916e3f0d. 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/JPX832004075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fa90b5c2197f4ea43d28efcd0a151c921f1356abf23cfae8e84373bd414d30. 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/JPX832004077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfdd88a9807ad6d3fb2305b5edf5f8066bcabd4692d36062539b6f5e9533577. 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/JPX832004078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184ec4cfe4e8dcc1ace39f30989ec60229d511fd105b5813e4ee49d9df60c7fb. 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/JPX832004079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874efe3cf073e3f2004c8773fa136e370ad1c3a2702d780da9d35f3b3e09c70a. 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/JPX832004080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b28f28344a95d2853afe3d0617193f666a467d8cd2e68bb0081b19354fb38. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPX832004081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477004cd297c542b749c56cdd8b497b7582962ed42ec61e8a799572027c727bc. 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/JPX832004082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215b028058fecad08c27c47aa106e49f3084afbb43fd744f97d5b77cb0118713. 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/JPX832004083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbd318714b17cf5cffc375deceb61d9c06b946ab51649628ba3e2c4a4e5272. 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/JPX832004084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f012684eadc7adf8e6592d758c97f85e22b0aefa2f290770fa37560b6f33bc. 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/JPX832004085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0032ae9a7dd996b6bee79365ea73ddeb3fb89f9e7f35f45501313c07ebd40191. 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/JPX832004086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7744934252dbf425129245c7cd0f51c2fdb9a4383d5f3b88cebaadadd8fe0d14. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPX832004087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75dadc64e78ec41531bc05d676e09dd7ff15b7aa3dc87e954d28f44eac6a7b. 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/JPX832004088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262033b928525c80c6ec2650c6c15aef2bc859eb54ce6e3c578222d318c6b36. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPX832004089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f6b7d6c6e36631749280fbbf4db23033000aa6d0602791b36454a4415ae5ef. 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/JPX832004091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4a47e021b46b79c5275492f6823a9e15074146c5b334b6d1884852d2933a47. 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/JPX832004092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de797cb6565437387dce678edabe99fd3db0a1f98630bdd751c27f6db450cdf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPX832004093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773d196aec756b856c752357b18f4daa88b9d061ee06be43acfcb993e1aec1cd. 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/JPX832004094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985d1eef8e21e7a1de9397cef84acbbc4f4b5f443650db82b6bcce87bd983c48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPX832004097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9eaf24370e0bcf790843d9fed01bb6840612b2a6bddb5c3f46e59651b7dbb6. 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/JPX832004098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ba925665b5362dfae01e2d1a4af41d67db1fd590eca288f15e376b9b79802d. 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/JPX832004100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf79de687ad3704c15036a4d5ff93dff093b423c9aaddefe601e431f1565914. 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/JPX832004101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2275a67eb56eb06a9719bd92a8b115379d0992bef4fe46f5b0b9f92e2e6b1ee8. 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/JPX832004103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f8c2acf39060a3094f616cc7ce159e193344c3f7af0d6b0640277f8e9aede9. 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/JPX832004104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d8a3ceeb51cdc7ea47425ab9b2a8fdcbed2dd84a61d08c0e11f2340b9682bb. 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/JPX832004106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2330f4f0cd48f3b83b29413f4ac5d87debf3cc7f5b6d722d3b5a303bb73142a5. 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/JPX832004107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4153ccf8ebc4d396cb9ab15b71e55bb928adf421a81c494d0585a2e6de210165. 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/JPX832004109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96272574486d27a29bdd95ce8d8e240c8bc4e9a7ab2e83e002fce129900c079. 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/JPX832004111.