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 0xa15b4f2d96d81cc24edb44174a19709798f519a475f78199380afd099cf4f3c6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a609fb9d-1c4d-426c-a443-4cb830118bc0.json and https://artists.proofprofile.net/proofs/artist/a609fb9d-1c4d-426c-a443-4cb830118bc0.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 0x5f5d05423f256e7f37a30fd79d50a09612fec99d8c06aa561fa9addb8331f12d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USMH92373930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8213b85401ec80d350520c220fd975e5dd051ec8071a6d4adb041651c1926a2e. 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/USL4Q2378415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61775a5753b73e9d4026bf83630f167dca82a852e8703f3b3a79faf3e701341. 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/USL4R2324920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd72607d7300d095325fe0a65248e2302d440d158a9162ac6e5993e450c7496c. 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/USL4Q2032793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd87ab093938d2f5951cce26775aebfbbc067fe0ef4391ff82aca808594940d5. 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/USHM92004679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbbcaad6ec4217c6f47958ef1444c8616543ee984ce02120637dba51e32642c. 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/USHM92004680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67a31e44bf2938b3071ab528b28c704b77a6109bb9cfaf3be58d804207c8ca. 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/USHM92004682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8213b85401ec80d350520c220fd975e5dd051ec8071a6d4adb041651c1926a2e. 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/USL4Q2378415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412aa7aba5bfe75a2553735317211748ef5e5ad8188d46502b8475bdee783064. 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/USHM82139433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe009cfe31e6c9774b06f98eb86c4d432785ce0ee4b3e98d5b498e1edc8b305e0. 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/USCGJ2148275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060dd2373be7969203404673274b654c634551632f7b353f5bb5326ef28b8f03. 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/USX9P2063230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe8acc9da544fe373d58e21c1bad7d64daf259b71d0bad5421f52402077284. 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/ES8241922101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c86bb2c8732ac2422ddb5acaea4a914a504b99661e5174c17615eac14889e74. 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/ES8241922102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383298b09c52a2275218bf57d217a6ea51bf919fb14ab8a2852e24b7c79f088c. 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/ES8241922103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66da6dbef858c7d9b08ba582b09a844fb4f0d9cc88e9539d3918f686022def9. 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/ES8241922104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f71487ad1a50a50e8092d5388bb9135ce5b97f58cdd8c71e80fae24a25ebf8. 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/ES8241922105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e9c13dd64a12b151a85274897839d4c6c2334c65641d87159cf4246d658884. 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/ES8241922106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6af7b82dab87e95127e6a3ca6a16c65e2f588fc2b296e03edc53f64565f125. 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/ES8241922107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f63efba372a211ad125c117c2ba7566c499817c2f3f54c59e34b1672888548. 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/ES8241922108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366adac728fea6b9c4c1f9fd5a34e329f2bd2d60c76822e0e743ae0ded2e3d2. 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/ES8241922109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193414a111df6bbb9f85d3d47dde442342c46fd360c44f7f85ee0f19f478eb56. 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/ES8242444103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fb786e2d86e53e9c95ed1613ff11ef8ba9b43a69eeaa4886f394ce7ff3b952. 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/ES8242444105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d1b620ad559e53a4537d7eee3040f0d7ba44b3db7182343898f0222ea5702b. 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/ES8242444104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4564f07801f8fad5f92a9eae90432ac108a77d9e640b2e426d8069f2f501534f. 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/ES8242444106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad718c252ba27a35909eb1eac34050827a7c24cb6883d90e822a191ac7540b. 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/ES8242444107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8f7a9cc271ca7d5e999168157ab0d29532494a2a5b552abdf7e712721dfd4. 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/ES8242444102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0fc5d89cd3aa6fb003ebf1a93de07b8dbdead8a7bb54b70272403254184b42. 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/ES8242444109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec760ca46c49b76c4201d441f2e72054ffff0cd6c7d6ce05cb3118fc08e1f8f. 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/ES8242444111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fdf8f63d1f5fd886967ec9b1662fd94f9eb7e791982fcccb6a68846f0dbcb8. 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/ES8242444110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96452d7703bb48218ff5d21179fd9b5d7f221cbb8be51225b657c9486f4a12c1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:10:18Z), 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/ES8242444114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c4186a03b3c805113a1c5001eee33946242316ed4f8ceb4f39046a70aa41ef. 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/ES8242444116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049ea244864b751b462b1439f5b8c5b0d74228daaf067bfe8c89540129a181fa. 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/ES8242071105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9c524e909fe7b87888fb0c223414b1f186a6d5fe8cd7826dda3dc7e5e68f0. 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/ES8242071102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743f32598a16e155d4623ad0121cd7ba543ae1c1ce06ae4c9247f2116b44cb0. 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/ES8242071101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a6edd30d2c14fecd512bdb7be4a0c97c0663a9bfa3d538da7dc728c9672be. 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/ES8242071110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.