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 0x1c922d81af2f12352208a8f654f120da616cd32d079634228c6d0ade3f09c371. 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/311cdd71-35e4-489e-944b-1abf4253348e.json and https://artists.proofprofile.net/proofs/artist/311cdd71-35e4-489e-944b-1abf4253348e.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 0xe0126c3a07cd1b92890e122ee453ffd14a2b24290e1ca1209a0940ea8703ce96. 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/QZCE61820070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c9dd8d3e1211495a86dd5a4ebe2556af5debcff144183c66f77b48ee521629. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA51830950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b1d72f07ff2707e67c291f125065517e03d520d6674ea797781d2cf4c39ad5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA51882718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e440c53a59cfab0aeb260bcbf04fad4b3e3f40b4236fad422ca297ecbdc02e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZES51886832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0386a53c2a236acb902693cbd3077c1fbe666d882d01014456b4b35f8ed6ebf0. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QM24S1918890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4686b539ef54120c419ee7e8458717fa721db6cd1be505d53d879a00a2bde9. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZHNB1910918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c12d6c3e31e2a1cfc8e7e0e7c44faabddea1a85c924f3abb1909f3c5a2e5493. 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/QZFYZ2055401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f56e85592e4020fc263abd4baaa39f8b2868e267363d10e763850524826570. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZFZ72174303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6434c162f7d96a68de42706c6ec2c4ee71036ac9f3da1168d0c4b3ea6bd6f68f. 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/QZPEW2111825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11b6f756ef4538051396c782c34d6773469c69cba48248be62b92ec2893d25. 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/NL1LE2102281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b984a80899615f9ee38af895a24f89c9136d94eb9a443414160d451cd262b. 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/SE6XY2146422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ffc942ab81745e5914ff26f41d7a44d5f5c3f6bf8499673a580af9d3ba58e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZPEW2131946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3031b816563ccdf4d09026d86e51fd5513a72b052b4f1bf6638fbb6fdfa0e0a3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPEW2207338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219193b9b99f1dee81e285497f76ef9650ab9f3dbe5ae421681c4cdad8bd08fc. 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/QZPEW2283829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ade26f5b4a6523ca8e8ba32861cc3ab8b2f137c73d3d933eb0905667d9938. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NL1LE2102548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b62b1579beeea72606873e3d4437bcea9f7f0882f23f3d4c7bc85335363278. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TLREW2221587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef1272081630c56465d81336f766a5cbe4d2c1f718517a6161248d2bd49409. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TLREW2224052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64735b5eb50780e9bdbedf8d8be78f2109c06e408726f1610f7bc749e9c89dfe. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1LE2202722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7655cbf50f86ac90dc5013a1c0bb7e0eb860463174e4f74aa82e89c1da49c0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NL1LE2202834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286045a62b1123f03d421504d07e4b6fc09d6ceb63587c87c7c506373ce81b0d. 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/NL1LE2302895.
chillhop beat tapes: Masked Man [Side A]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda47569dcfb447da620b44689cc523cc7cdce13f6399dda49679a0cbff87bf57. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/NL1LE2303417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf075f141076e71180513928ecc1b8826c3490b8271515baa2ea7c6057501f. 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/TLVEM2436450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119519cf9fc71d206a8ee966c99bddbd2fab75573a1b5052d9f3be08de6db6f9. 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/TLVEM2461777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8378055036fbade821260a9a18a320827e18e056eea6f92d0682af668867a20. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT2VB2496580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d78ef54fa0187bb0d51309f2f046c0c8ec7016aadbd8c50cbab184664b38a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZVEM2534971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8482a9abadb17ad870214d935b1f583fbc82b8758485e93888051bde91615a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT4K52552643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afd3ff085e74e4a15b157f3976d98ffcb12754e1a70923c3ff3217941040e06. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT4K42593080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae77ff23637f83121bcc88cb5eaabaf45ac27baa44de53f9ed0aab66d56c80c8. 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/GBKQU1916701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda47569dcfb447da620b44689cc523cc7cdce13f6399dda49679a0cbff87bf57. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL1LE2303417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496cd0c58aefa03f93b57f969541ddaeedea935b7b7626341e4f775b0eb5444. 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/NL1LE2202652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b984a80899615f9ee38af895a24f89c9136d94eb9a443414160d451cd262b. 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/SE6XY2146422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf26c70fe146078ba9fff4642da847ba50dd28f376a17fe6ab24b631317a0f9. 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/NL1LE2302977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286045a62b1123f03d421504d07e4b6fc09d6ceb63587c87c7c506373ce81b0d. 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/NL1LE2302895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ade26f5b4a6523ca8e8ba32861cc3ab8b2f137c73d3d933eb0905667d9938. 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/NL1LE2102548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f234b55aaae12eb0cdac5d965c7757a63f2bb1359ca7b9197a5b6825fd81e6. 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/GBKQU1886849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b53f2040425fa265b69f50dd03f009513ab2fc52cafb657e3363c2c82764b9. 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/NL1LE2202601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9625eb8b2e19ea5c16f9ea3f3ebb6a1afb21a212be59cb914b9eed9f5a01d6cc. 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/NL1LE2102313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11b6f756ef4538051396c782c34d6773469c69cba48248be62b92ec2893d25. 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/NL1LE2102281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cf65c11299fdf57d04cd62f1b6fe1f36d78beb7a32810de7f93eaecb532792. 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/QM42K1802115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24031ad5ecc213d725944f89113a5b4b9f73cde651d1ada027834e016db2024e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM42K1983550.