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 0xb45c48f54d692493bbd2f1335ae706f61521fae8d8d307bb231c25a0f980ecdf. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a1b1cea-6afe-4344-ae3a-4fe27896c90d.json and https://artists.proofprofile.net/proofs/artist/7a1b1cea-6afe-4344-ae3a-4fe27896c90d.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 0xae0f41443ddf3578d45c7acd7cfb1dfd64f7093ad4932155fecd2e2df9b90b5e. 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/QM7282022841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8755c56f6eac9a7ac8364c0185fd1250500c66b0d057dd799147be3cc2349c75. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:05:11Z), 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/QM7282022847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f98e9faa339aab6f37d2d420c4ccbf8ee301d7edda85258c1b518367b99e9f. 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/FR2X41958632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f2a89bb912112498e07248608babac54a229a3e4b176dd9822e71fc7a883a. 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/FR2X41958634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd335f03fcdb18c6e82b1105b9f29a5202a1a8d661b295e50fee15db9fd55f0. 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/FR2X41958635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b9393de28f48aa0be68ac9e85b67eb4f57fc8f9c0426088c71fa7365af2e0. 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/FR2X41958636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51375b2010cb1629fd39c4010aff23fadf6f3a8ce4688b2506ef35fb07688ba. 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/FR2X41958637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885218863e2fc87e9a556ef0a0513b1d34257f01b24e819adbc7db97851bb962. 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/FR2X41958639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b3901436df30ba8478dbac5884af9abe2022e0d23b45d75b2ac4278b01f72a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR10S1955815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8819ce9b506132086b2e02c57032a13cbd594ca83d2ed06c5a0f0b70d18273b9. 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/FRX201944602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f96346ea23c1cdc1821680af35daf75b199825e65652ff1121a29e24126d73. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR59R1936049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5070d24b754be5d7ffab7261e8084509494a590ae76ce2dfde1c5608dcb6ec. 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/RUA011900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85c98369fb87963026b7b654e7d2055c08ece4f5dcf1f1da483ab97c7759b8a. 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/RUA011900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15c0ea4c7df0c5e7b1ce08bc0b5325fb2ee7cee5a9ff576e7692ff33941aae5. 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/RUA011900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da56b42257bf6ed4708479d8bf705e7126ba3e761941d926b39621648a938b. 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/RUA011900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa8af627a291be83fd04d517c1764c806b159d517b1e04d49ededca280d3c8f. 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/QMFME2075072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f2066575d2f4e6dc464a833a41bb7b591aebb68404150da4cc38f0b4ef062. 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/FR10S1927024.