1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x872ded15fc027cb7b09181bcf258a52eb7393ab6b2a74cfa2884947685236b27. 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/6b869f3e-5bf4-4c92-8af6-96b8eb04d4d6.json and https://artists.proofprofile.net/proofs/artist/6b869f3e-5bf4-4c92-8af6-96b8eb04d4d6.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 → block OTSBitcoinBlock must exist at that height 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 0xc55ad45b6667f336ba8596dce460352ad93a071eb74b37f99cc6c2a71a74e5b1. 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/QZK6Q2036075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4724f705faf9983afaa09a222a74555b4729d00fdaa19255320528255d7127d. 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/QZK6Q2036076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb419b31193b070f2eefc783d95bf64ad570221b179dab1a7b54dca15ffeedd8. 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/QZK6Q2036077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b861fbcf256faba23f33622c282a5a9e27c969ac5c6b10fd3b575b3a053acb. 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/QZK6Q2036078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3615913cec758cbc8a395119a6be13a4181b121bb771c9d808568d2ba3f63976. 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/QZK6Q2036079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704aeda1edee4c459e06ee23023069697a630d8ff1671a02063af8679d296eda. 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/QZK6Q2036080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3090765d37fea5163e2c83dceb6c39ca6b4c1169f0e4bcbd4727aac4028da9. 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/QZK6Q2036081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56b23be0d5252a56a68ee1b239fb035459bc89001cf00cf9a003564df3b4e7b. 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/QZK6Q2036082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d39e7f8f87d34160b3f69dd623a2e3eac636c56451a5187e06d440abd2bc3. 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/QZK6Q2036083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e2f314799708e9880f9faaa50a9349618b2a52f1d36554c6a7053dea132046. 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/QZK6Q2036084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e16063095cc65134fd56e2df8fa20f88ad0d3411f8e697e50a2cb4c0e78487. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6Q2036125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe28529377adad87c3dfd9ef488f50e465c28eee1b153ff3f50e3b7affd899ee. 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/QZK6Q2036126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0758fcade3f3bc2199f38ca0141d6669cc9b07c34fe4ff9ee3fe662ff77384. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6Q2036128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495d5a9651e03fd1acf3fec7205b35422856d6ef827a0a25d7f85d560d2e5837. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:31Z), 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/QZK6Q2036129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b8aa23bd7f919e598a1ba4d94581fed93d04bd536b5c89987fd24988642c5b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:02Z), 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/QZK6Q2036131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b913f02a8013e8797f2aa65f7ef773cc12a83c531ed045e46e43a718de14cc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG2270241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc18018066885bb687162c7fed89276d05d0a6fde30dd1c985283093c5b7a5. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:10Z), 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/US7VG2372144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c42bda1a6d024c00ab7ed039be7f00bc36999c7fdd59216a09700fd2f50ac12. 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/QZTPX2302049.