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 0xff3c1e05780ebe2e733584213cf8ad376320ef9def1afe56962e0d8ce0a6057d. 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/65ea3b9f-8ac7-4973-8b7f-ab01e6fca8bd.json and https://artists.proofprofile.net/proofs/artist/65ea3b9f-8ac7-4973-8b7f-ab01e6fca8bd.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 0xbd73a20325cc99a111c0f4be2c640a7a8caabbad16760e62888bf2be54786981. 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/TCACK1524631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabf1d96e141e0af0384ba4357d2926368e0861c3d84547dbb5f587292a95ad. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCACK1524632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260cf3aa8d6f454e9d61ab3a89f2554dc7d934112740dde47ef783e1c4b87074. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCACK1524634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca5c1d768b2468bb10d62dc873e667defcb6f9298a873c3901653bd6ae5ab5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFYW2015757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2947284eb6e2062d88f2f3d97333016a75ad1bec9ff4aaf73e0c8d5cc81b8480. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYW2015758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260cc685b89543a07cdd331d581adc0cf665525d368f7ae6e7d08025f6fad9c8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:15Z), 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/QZFYW2015759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3a851cc369a1a893f8edff64adb6f923d1fee4f8641659956010a8dcef715. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES52089517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a48f873ede384f0c180a717221399e9a1a842190e919411c9c798740c45945f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:50Z), 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/QZES72055140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b35186ba32ff7cb60d77a81e094ce915f4d94739fb5285d46f2c94f2bd08a4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZES72055142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f3bc3e6044f273615b6d3f9ceeff3ef30538e9a07951c587686e9d9dc24d2. 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/QZES72055147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3a851cc369a1a893f8edff64adb6f923d1fee4f8641659956010a8dcef715. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES52089517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed961f22c4041fae872c3eb78594944395b95145b1105c816aaec54a152cfaf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES72055148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4130e2e49562c7fd2f76d74868b1853e05f21995c9e8173d2cf388d67551e2a6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:18Z), 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/AUMGB2100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f593e2cdd57f399eb9f4bfb3a34c48a760b7dc10a1124c3eb938d4e5c8a351a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMGB2100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb5bf095d24e5d2784f6a39e7e2f3b6980948f2febcc16e4e65bfaab5c79ac. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AUMGB2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbb1c8d38ec7bd1fb5faa0ca14e633fdd1dc01ced46adcc1299d5914203154f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMGB2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af2b0c168c9811cc4d8eb526114d5fec0ad86fa99f11f31cd2baf23b25d981. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFYY2241117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d4f7da0d413d98ca6d622d252472b72d274864ef5dbba53169d7de1f65bbdf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES62251298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa858be9728bb59d0ee0df91c65fd97ac2a5a19bd5c14ca785b5d8dbb6024010. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWS2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef743adc4eb6b0bb2e2df75c100075dc2be88409a7dc657f67acda09761b3448. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:28Z), 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/QZNWZ2221872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844f9cdc7dbf0345675edc7f5f84cdd12609f87f722a7ad4992d34a2f2ab6f2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHNC2316515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73f39e3261daf4f8863c206abb113057e1512b5001f34fc6061c4804e81c3ad. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFR2391584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6996660b0b0a14478b50f80cefc68978574d685f8b58c66e28d7afedfacee. 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/QZDA82415650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3bedbd95319cc157a84946e715aeda7ff22fd6f749743e36880ff3bb9ed435. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:36Z), 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/QZDA82466989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c51604a8f1cb40a5816a73bb83d29c9d8186416b8104fc741caaedf33678b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZHN72408410.