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 0x9ab8389ebe11ddf1624a2a82ed3eb394ba7ba2d0e4f52a5c504bf49d8e61d8d6. 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/f530a1b7-35e5-4e52-bb11-f55a0e73adf8.json and https://artists.proofprofile.net/proofs/artist/f530a1b7-35e5-4e52-bb11-f55a0e73adf8.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 0xf314e96c8749053f45781736b9bb92195cd9e85826fb3899d79bafb1c5274967. 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/USA2P0743413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0c1bbc08578690ea813d2b482440f31fb56cdabd0732b358d99e138ed50dd0. 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/USA2P0743418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f50a4b7e8c7e62b0c189fca6b80d9167e354d96d4c1aa46daaba72eb25572f. 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/USA2P0743420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c06d0da138d6be6b5207610235318bee417da536c1e4216547fd99e486d75ae. 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/USA2P0743458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ab04eeebefd4a29d36caf3d96659c1e69011be957c608695559b7bf911869b. 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/USA2P0743460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77f38626cfeb534d2751f0b70ce746ac09b03ab2f40a6834584bfe287c05d68. 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/USA2P0743463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69294d3c9848f9d239b71bd9e1a4cf854499d850a8a2336cb18dc08f5a82a7d. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USA2P0743694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe6fec6d42c5bcb5f932e4c36c27a906e9a0115c84b0385b16deb0c23ece244. 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/USA2P0743695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fa0fc8002a3466c7a1239cc00baf904871f0e4ff1c63113b95c96a4a906be3. 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/USA2P0743697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db41f522f40c9dee7ed5977320d11d6ff965c4368f9f05e689ce832ba78b136. 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/USA2P0743700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6246c3a00866581448c3c7110ed51bab44b77631c3bf1dcc8c5637a11ac13e. 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/USA2P0743702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa491bc53cba4eb5505b70d15b8f4b6dd63780a66c273e34cad1f3fec61bad05. 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/USA2P0743911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152b56ce3e713fe744f9dd22220965e2292d4e286240d0ab65619da7cbe36fa. 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/USA2P0743912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41558fd7856c881f0d4d79f5d109777fef107763711023d91acf3e5968bf70bc. 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/USA2P0743913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a290c77b620e808d7dbd640e44e1186fde04adfb809dc8be83d29fd60f85dfc. 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/USA2P0743915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adb0ac64de1faad0650758413c76837a531ee937666cdeed79bd4afeb4aca65. 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/USA2P0743916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec97f98ba3a0219957b61486bce7e67aa6021e7404b447b09c9467384b031fc6. 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/USA2P0743917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e38b1b11e880803208a76e8885e8e57fbd62bb554cfb35d002b74bbf9496e1. 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/USA2P0743918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e36d0bd6a9b8b4ebd91d78a9ef7678b526841b482002cba1652ff575bc47f49. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USA2P0743374.