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 0xb6c967a49e3e47761c0acaa8352b5889fc6467f90929322166d0c469aa148407. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f9cbb7e-cbdb-4d08-b311-5fa256019346.json and https://artists.proofprofile.net/proofs/artist/9f9cbb7e-cbdb-4d08-b311-5fa256019346.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 0x4719bc7e200488f1436f902d3057f45510924606bfd22cd7a9071879fa0b11dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAU2489922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444639e91c0c4a5769f70aa984bd24381a4c9ce0accb90eed8b19240468e2a8d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:22Z), 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/QZTAU2489926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a13b6616ac89d1b4574d692a13bc337711c874d05a9aeedbecce2e5f27024. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:40Z), 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/QZTAU2489927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f265b1f23fba06be4c50314883a5949610b68ef3af23df0f8ae01e3b79d2272. 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/QZTAU2489931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d05f9ab0d008c0ca8d5907ae32c401a44c2cb75347e75b74ed0aa01eb936ad. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFR2499322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ddc0cde8280e1ee83768bf8749902b53884f6845ecc19067f7a890b094c8bf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFR2499324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd326f67d16ee458c18b8abc1824fdb1eb1fc106d3af09528cd063adcf7520725. 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/QZFYX2569231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b714a153370d3f1c09c30c3b5d6876cca1ff298cf3b3e7a5090ec373ecb1c35. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFYX2569233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f7fe448bed2ad8d25c007e493f6a5f337daae50da6bd7b7bb76267ca7a2e0d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:47Z), 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/QZHN52574434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0857a2b610365a3a0befbab04e9fb4f3b7d25e384c8b9ed9abdf5708b6f372d7. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:56Z), 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/QZHN52574435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cfc8dea91c1bf0c18f1dada166fa2bd348efb06deaeae5cdd320c98d905de3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:23Z), 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/QZHN52574436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0e073ccce717c0685dfdd2956a0b0163a17df8ea58a8189636529f36b991ba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN52574437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6f11cac41cebc94572a655209336148fe56229ec30b19bd1755da9a4ab5212. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN52574438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01b157710daba7610ae325aa48ea3cff3dad671048e122121675b312137c5cf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN52574439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44d8f570955a664076fc8224ca761d4f03c8764e7f7a25c7affcf6e0b5a7d69. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:24Z), 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/QZHN52574440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf662197465203cd9fa02045fdc63106dcfe79b74437e70408d3f91abeac2edae. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:36Z), 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/QZMEQ2553491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d4e23f7587c4cd3eec495eb6f7dd54c183e9870a25e85a9e93a6ae486e091d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMEQ2553492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1615f9f85e9ea8ce69edfe485736362f11730c4d269a085823f843a0ccef4b2b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2553493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2111c52459fe8be8e6ef25ecadb853d07bacd7937ed568802cd112dbb812a1eb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMEQ2553494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b75690d82a33f97d502e0d0132173c763bf9b515839a63b1f075aa421b558. 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/QZMEQ2553495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328357ba671cd7b33b70d791e8b47e5427dfef38a526a51be064cdf5dc47362e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZMEQ2553496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6de7548d4b0576c82e2de9d0841ceef890705987ccf87add76d9bee1f11415. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMEQ2553497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4cbc15b297857e16a0574d9678345a28d38a4a23228f4bb169b88b4911ede6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2553498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd425bf8ff905c410bcac1ff1149b517f1ff1283a7083cf1dca4d62542e3ded. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTAY2585574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e681ad343f2c2bb13a407806c414b097af876c1f779020d3a0e4ca6ae367aa0. 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/QZTAY2585583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f387748fe302ddbdddf14c326f535ed9550e7141f31a4f15e85d202ab18ed. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZWFH2528403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6addc3610352380185bc7fc0cc03c28beea7fe162d4d58008737bbbfa8339957. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFH2528404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6fd78f6cf51adf8e72f283dbc79a6b96f09e3577ebfc0f64709937aa97888f. 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/QZWFH2528405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145d0bcb23254cc75187434d1d58904defe3d1efe113e80e1250dd7cf0c6e5cf. 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/QZWFH2528410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160d9c01b23a89159632f457de2c22bf240a16bdf3305fe2e5b56fd460520996. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFH2528411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716398b340deb602e039dc1993a8475fbfd7cacf8857d904fdc1fe552bec70a. 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/QZWFH2528412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa870e75501f56e10db88d2719577fe385011f6fb30268f46a2c2af30c2fb1f28. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ7N2575308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12646fd8445b83e84050a40142f1b4167e468d84df396aa8162bfe70ce4a87d2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:55:58Z), 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/QZZ7N2575309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700bead9c15acf9a8c9173cc08f6443af715f7d3a7b9f37e6735d9a142f5e588. 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/QZZ7N2575310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec38c2df897b893c0775845062de0df440162fd30ffdec000eb88c60c591eb8. 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/QZZ7N2575311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24864d3f06fc668da73debc3f4b6ac165921832df27356acf13a160619fc1e1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7N2575312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe1dd2febb71173c3649f7fbaa2d0e65ea97de2ba9806c913da4ef335d4e67a. 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/QZZ7N2575313.