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 0xf127b9c9ef7d9ff3512cf0f1dc0920521da267a338a8dbf4acb31b92a2f50ce9. 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/cd04e602-9c32-436d-8f45-39d2a24575de.json and https://artists.proofprofile.net/proofs/artist/cd04e602-9c32-436d-8f45-39d2a24575de.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 0x2cf1b87f4f6a95085e4850316aac3a6af41d967a4ba06070afc54264293374ef. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4DW1842584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08889e4add80c3396c39fcf196563ab3897a4fd372a671f2c95b6a264f501965. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZB4J1867373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768259e1bc1140bd7f99ffb5a32f85bbe46feea4c323f813be4469e7962bb4d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZB4J1867375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20967f37b28cd8ee67efa938d8fef9bbd3ebbe80f5cfeef5c0307db23f8e9c72. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZDA61923247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4b5408b0396938db0c153eb00d8f23c3783eef5ecdc06557fecca4c5b2d7b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES71905465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad563497db0d9d7919df0a888c2e70d97c48216cfeb2e717ecd8cd992772bfff. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:11:16Z), 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/QZES71951275.
Jingle Bell Rock (Stripped Polynesian Arrangement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb2619df1e55a9de3d004ae8ca6bde5134163c58e2599333623d57ff241e8c4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42039825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850052aacb6e5dca57b2fcd1eccef2a04a1acd295bdcc3980d77922b6493d698. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/QZES82049305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3db02f7bac830cda1a261759efab132cf6c7756ba2fcd8951b21aa688c904f8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZFZ32317436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe2fcaf70177cc009b8ed4d7bad3b13cd32bfcf09849e7ce324f1a07416dec2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAZ2466543.