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 0x687e5f8b26e2ca98891c6695308cec2c0da349b2a38733cdea137f7dd6f7be7b. 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/558e9a10-1ad7-488a-8ff2-b8d5cd3b67cd.json and https://artists.proofprofile.net/proofs/artist/558e9a10-1ad7-488a-8ff2-b8d5cd3b67cd.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 0x3a0709a56cee87a088b27d324da50822e92c1b53efd9d1ab96d617dcf149687a. 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/QZHN91955246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f53d024b7006c494647d31379753a5a15af02e4eb0e0fb563ae95fe159b9b1d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN32143807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e13ecea9fc72b026c3ec974e500032c7cfbc830c335d4ae44c346bc56b917. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6Q2142137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f452eab4a495d52a52bf690ad083ccc77bc2e87e5bd34935d864f15db9ffb6b. 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/QZFYZ2261346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78df836bf3f1b4d0dcd17cca5f95c5879d13b13a74754be9176dc77a9dfa6af5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZHN42271765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474fcb1cea84fad6adb3bd6cb155ab31fabdf5880c599d963763951e0951c381. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP52224200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e95ea5069b35dad15ff1a9956e7a05daa47de0cb0cc89377dce85fd1c794572. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:46:09Z), 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/QZTAS2312141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84710591636ffe0c21db54c0e0a13637c15e8105058bc6f9b0be3b702f9b71b. 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/QZTB32351118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d9abd074bec5c7bcf8451eceff1ef7ada6bed5defbe225f1320d2c681bd69. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZHN52457485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281355dfb7821b0f65834aa9c5c47c772f76da5a9f602a5843b6d29e6a962e10. 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/QZHN52457486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd6c88f98497e419cfe947f92e211c9326294920fc29ceecef26fa924eb8a04. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZHN52457487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f3be30ed50963df8ca865367ddc20a1499e9de407f1d6ef5f19f4d2f6c5415. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHN52457491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa893afe9c4f5767ecc2323c741900ca7f87244c39345b31211f2d804c190fac6. 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/QZHN52457492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7772701353c79c3179cf7788ff01f1d70475449f3cc53300d6ddc71b3cf602bc. 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/QZHN52457493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90e4baa8f7fc8980e2f691da757995da3d09d39ec853d6301028ec090141bf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNWU2487375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d98d78c9f7fae442d01924a4667aa413d451113e729a2553c1a6168e9f465e. 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/QZTAT2490789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5315df62cc70604a921f54c3d23488801be3c1a58d99c39b6576c188e57ed45. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTBC2463903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d98d78c9f7fae442d01924a4667aa413d451113e729a2553c1a6168e9f465e. 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/QZTAT2490789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9421cb1e6eaeab5a22aad1122ade9a9072b1ccadbac60931d4d0ee077034a32a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7M2478865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4867f240708c6e67ade0030bbc2ce2dda6fb57a5526d9a9559e01051b18a76ea. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZFYZ2566724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800c5fa5225e61ca0127546dbcb242f6846e03162b2c107e233de9680254054e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZFYZ2566726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac48c016ae5d6c41681e19aef8d8ab553cb430b15b325f4fe57859178b774673. 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/QZFYZ2566728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491caeba10aae5e67b822ca27834878a5fdf869c37f0fa099c925e4466f7bcf1. 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/QZFYZ2566729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17455b2fab25cda09d6196e586ec9375fc3690cc641af9b1c8434f61ae32d604. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYZ2566731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4f323cd63a5d453b5d61ef6f2f4ffd983e9d87f801174da3b44ffeffa0e25c. 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/QZFYZ2566732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb305ea3cd3d626cba77a81c0977080bee46087f0ab681d39c04e547282aa1d65. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYZ2566733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057973f6962daae75a3fb1fd0a20c16b27986d1bd3c6e57ce0a42dd397b9ca4a. 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/QZRP52533531.
LOCKING IN AND CRASHING OUT AT THE SAME TIME
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d804c077e6573dd96f75c60c8bc23b831e993bf0d63392695e09438b71885c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ7Q2565818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8635f90b22d74809555912a76f128381629e89eb6498f16070f7cc729026e920. 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/QT3EX2482638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6282a4d9d9ee6f7c32ab6f2cab4b0935b52861a4ddf8b44797f5bc1eb736a01f. 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/QZHNC2553264.