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 0x01d0c07aa527458d6786209b6e9c7141d2684293b34fb12684bb9eae584d8da2. 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/26e942de-5b16-437a-9eec-96bca1a373d5.json and https://artists.proofprofile.net/proofs/artist/26e942de-5b16-437a-9eec-96bca1a373d5.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 0x301399953ce1966bdf83357f8a4a54977bf9d9dde999aba55808e0dd97e85c2d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFZ22465236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e5683886d3086685bd1a0d06765552e63a290a15e4e1207f1b43ce194dd72. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:11Z), 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/QZTBB2429071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78003b529006d735463af019f2785f73ff5a663fc27bcc4777e595dc8c60ee4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:49:38Z), 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/QZZ782404054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca9fd2160ab14702568af1c183e961eee6881ad8f0b2be1f1bda87e73446c13. 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/QZZ782405546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7f901c9ee90928a517eff4b6105c69fd48a749ff6e72e703989e50e2b1195c. 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/QZZ782474415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1e6d67ccacee9c07f39074349c2d4e975874db038cf5c99653055c5889dd3. 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/QZZ792476000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1e6d67ccacee9c07f39074349c2d4e975874db038cf5c99653055c5889dd3. 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/QZZ792476000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb60928a2a0fcabd929a908be2ff24c130b5c4f77b9a759f70ef64eec533cbf. 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/QZZ792479835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7859f23ec9019a09df8c674ca0c025bbd5e425e62159aa1ba21e12f1864055a0. 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/QT3EX2435125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a97987e804b18b7e9e31e5d5afbb746eb0b333e769845701ae1bc54a5e0ca3. 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/QT3EX2437570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab41808977e4ed85a61111590defdb82dedc8c193972e7ed3c30ae07a55a988. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:29Z), 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/QT3F32475377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefabc548774544f1de28b999773d85299c3c62f2bad6ff999817da7c3551499d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFYZ2528650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f10857dee0d7975decf4c76a30078da2aec3f60939179aac54008d7c195b26f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:12:42Z), 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/QZFZ22550750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb73a94a84e3995af27553ed286145bf8225b023edc6cf486cd6719aebf1e16. 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/QZFZ22548638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb73a94a84e3995af27553ed286145bf8225b023edc6cf486cd6719aebf1e16. 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/QZFZ22548638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb9a1e028e22c46fa62efa9b0252978dc96e25905629f3bed0ea11175881c3a. 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/QZFZ22550753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb9a1e028e22c46fa62efa9b0252978dc96e25905629f3bed0ea11175881c3a. 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/QZFZ22550753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28b63da3b61f42b93a269254bb7cccf5802a2feb92a6b2f514c5b54371d2144. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZDA42581625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c628c3d0617a330bd5a793c4c285a8251502b6fe72e394386d8df0d929e40b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA42584028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d53dd64b7d1e0b7a8b7efa747edef8580d5e66f5f83e79f6c52dbb569c0df7. 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/QZDA52522049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20281507a4e9a23e1729b6bf9ce2a2ea5f27811bf3a10dfa622b164d240489c. 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/QZDA72548105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236f54f165672ff182f3013ac9e12a6d6481c05d70b8dabc1ac6ce50de56da9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDA82535853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb10d4101c34597766a41b1e27c0988c9ff316eb1d07153f81c3a8ff99654f3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA72582013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad80fe4faf0912e76eb75cd4effcfdff87cec129bbe0af6945ab3b7ca2aa6d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZDA72584191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6801b80c2bccb5e86e1d19751af0e1ff7b2bc518b6d58bdb575f4bee1a1ba3d. 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/QZDA72584193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1950bafced9259a886365c56c24adbcb1ed123dc57f62728fcd783d48b368d1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZDA72584196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53742fc0d0682d923efcbb91f3c50e6161cc735293e31faff85c73d0340dff7b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZES52541812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02fd06f1f9b5e38db78edf494288259aff0e80f642cca6a71390e672df2d209. 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/QZES52540445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59448e16fe02f0fe852e69f6d4c4ab3ea05091010a962caef8ef05acec19c0a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN62577909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165890f91d35ee47bb23d2452fd345c1dbb112ffa18a5ddf588ccac0257301ee. 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/QZMEM2516227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9da8e5af9de8ccaebe20fd3cb022fcb8eba2a43da11e855f64f80f7dc85ba3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:44Z), 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/QZMEM2516291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65195454d0ae596e2460e5605efb096efd87ee1e6118b317c6d29923d09c392d. 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/QZMEM2516357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5584b9fd951402c4ae2e7621384dba1ce12eb9645be1664b9e431791699f957e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZMEM2575977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1e9385939eaadd175144f3e61064580ffbef1848115b65c9797d3335b71653. 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/QZTAW2515767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba7d7e7ae7b63949c4d238ae2b91d058ff5ee51d54127e04d41db4018d6a6ea. 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/QZWFQ2531335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a065ed35da43681a44afe11b4fa2387d1cb876b13d78c36817fa740592174b2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFQ2533745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cea6573a4fb0de620fc87c31915a36c53dbd8c1b8afbb9cbd61bb3f2fec29b4. 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/QZZ7Q2571355.