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 0xa28d2f7f7d5a31c14b1197f6221bed18d1ac7aca268461f5be174c2d455b3162. 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/f6519310-3be2-4878-bfc4-52cd2f7604a1.json and https://artists.proofprofile.net/proofs/artist/f6519310-3be2-4878-bfc4-52cd2f7604a1.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 0xd6ecf8408f382f8fb53abb9336459772820e3e7cd9937f1ac710959900eb00ef. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:09:42Z), 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/QZTB72203201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51be014d9db21e81922274e4b6a8fe35167a4252f682b30e2f69ca968ca5d91e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFZ22303213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e2caf814e16d0666abd49f57e5fb0b2ef22136687b39fb449de4d7c102b463. 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/QZHN92399559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec78ae5235aa5b1a3c0f67c4dba4aa0fcb029cda04002847ccf33519c6787a6d. 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/QZNWS2323192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664e19d7a162cb4b5281aedd9f54d9929ca7ca7e08882b08ee1c148503c98a69. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAZ2330097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9f6dc600c088eeca2b9ce3aac85f46e3c901194bc2654d276637021b54e431. 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/QZTAZ2330096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c7face7a277b58066eed959425b4b9c2c9cbbfaa2198f7b30cf9fb543a2ea. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTAZ2330098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aaae8586f253d813f16750bcb4ba56214adeac05fef5079b4d6c0a178cb78b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:55Z), 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/QZDA72483475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18742ef1591bf22675da03bc27f5aeee1404ac020f9201ca6422379396f4379. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6P2449617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b67a5bb9264d1d3647879a279a2edfc4f10184424568750726425e11040f8f. 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/QZZ792414251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d97e24566207db63ce7847bde2b4c817b487ee9713374d1a1d76f08ea4fa3a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:10:41Z), 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/QZZ772471662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadab8f76f0b7cbd81535a6859153d4c08bdbd701624f051c73a848ff237f98d4. 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/QZZ7T2423494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224003c1a9f21bf35ff4006e43c36e132b333c7ef9ad301c3da1b433438bf268. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ7T2423496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3d57c94502d2a0163f1ec5f2e52bf814b226c4e63074ba7a6026eb66ce54c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:43Z), 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/QZZ7T2423497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef087af0571efc9aa8f8eef152c1c7b133da4eccb1c077cc5dc0c6a3076b968d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZWFM2426809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f513c73e2f332693c7857992010f3001df381f4cf9c186c214d580ac725705a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:01:57Z), 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/QZZ7T2423498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031cdc39f99365ea3c417dddfb1ad89f83d91a5358e11557c3acb1527634bd12. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:14:56Z), 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/QZZ7T2423499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700e4f29fe14f9adcef3d0b314f1789275f4dc3b0eddef7eacf529f915ad5a40. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:40Z), 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/QZZ7T2423500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe63421aadda3a2905755737a0556a5b14805679a38fba8446638c84d9e0f560. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ7T2423501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b05cec486e36fd6f844ca8243131aa1b6c88825a485f215c33eddb37e6c8a3. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ7T2423502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe058524de08e805db8a14531cb97778d97211aedb9cffc412288a9dc5aa87336. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZZ7T2423503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3edb204e82b898bebcc4b3780f6f5e0af4881aa92b27d0baf3c841727a7929. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:20Z), 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/QZZ7T2423504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd1ec92dbd586f390054d1101bd89981bd2c9bd375ed10cdba74478da179da4. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:38:19Z), 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/QZES92534531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f85ce853bc10b3b7488d55d446ece9dbdfc2e0d8391f33ffe37fce1925d30. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:19:42Z), 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/QZES92534535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5d483a0941525d77c8fe7c2ec69d4c80310c6357b9702a0b795c2dd567b29. 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/QZFYY2564302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf348a512302faf723b04779af346c62652c6eb28936781583a967f3a641b87fa. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FRR642302425.