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 0xb62bc59312da602346e7ede964f21367874dc87dd38f1151922a88ea34ad3622. 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/eb4b78e7-1097-4074-a5a4-3786f2fda58a.json and https://artists.proofprofile.net/proofs/artist/eb4b78e7-1097-4074-a5a4-3786f2fda58a.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 0xc5436064c7c13e004f59331bc0a64d163a8ff52b2a7c7cf7466df7ba69147100. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMANG2235682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822013f5a070e2e7d3f22571292aa8697cf26b4802d5bc3c5b36c2b824c122e0. 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/QZNJX2361944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4c6f7f937ebe66cf362c098394ab02c62891fe441e2c29d36dd0838ec375ca. 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/QZNJV2351627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a6b8a2e8949a1f793bb20d3d9507d18037c9179a59e1c84809f601b82b64d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92309092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c9645666ae370e6bd03ec63ff5bc201b65f30cd87240b36a955de6c40e1c17. 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/QZGLS2397243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2a79b52f0bd7d7ecff90cf5302786ec33fbe37f1c1d7c702c0d0341b88ea83. 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/TCAGH2238870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e321c71bfa5d15f65a2a245b2904af46d7f24ef4c6a63d51e9fdca056ad134. 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/SE6I32232151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931b799193339942e97d0ae270294d887e5251dd160fd31448628eae1aec475. 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/QZNWT2375230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686328956dccdf71e08addba6b7ce7fb9fa7571ad9dc048f7a175c0bb6d2b43b. 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/USDXS2500596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8940954d6cc96d19d8fffdf93266f32bc4a6e31cea04689ad62ff189ec6206. 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/USDXS2500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723da45dc30c642b43224fd3312be4ecbc29be3455cf29dfecc9c3554a3a808d. 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/USDXS2500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb0f539f45296f166f221b77e30075898a2396a5920078718621bb81e0a1f76. 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/USDXS2500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe166bf6bc4d01f738c939a6a8639a1d81876453ca027f712e7f0e5cd24a46cd1. 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/USDXS2500600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde9edca2e23a3d584bb7c10cefb3561382b961610a96d9a723297bd2ff8ac5. 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/USDXS2500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc297f00c314af510c2b45e186120cce35128052417694a12541773d670ef1d5. 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/USDXS2500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506ec6597b105b5039dd443b4a097e4077d742245f6dff4830f36af560089021. 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/USDXS2500603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dac4bf756b9d865267516f34c3fcb282b6566766e8c90e46b045683262def64. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QT4HX2500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff0c7a5ec7b4b6d4b9061c34a2df131d9b0682ffb1c24ab4597ebf3445e5f61. 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/QM6N22560745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54683212b0819cff05e3837a23a7c29c5cdaa30a2ac78670ed17bb9f5b994b8d. 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/USDXS2500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1fe9f7379044cc37efa43e6ee4d6eb076e8c47bf28bf4a192ea6aba8c0b00f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8c1ef37d2aaf313af007f42f6bdaacd72370b4ea14eb3f6c7a81e80fb2f0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWL12403597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9353a6d4ed77047278d0618304f551227a331a25af3fa32a79c3a29aef25e2ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2402126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a0f3d3a310d6261837972c1e2bf211bfc8359b256ad3955e04392c070febc2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2402041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7aec099be0378a719ea573a1b66b47851ab8212a034036ab21fecffd572c3e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDXS2402240.