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 0x0820f63a1795e862d9a3ff549ab63eb3120a6bbf536d2c04912c1754df6b3202. 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/3316ca74-daa6-46f5-bf0c-eb7cc731731c.json and https://artists.proofprofile.net/proofs/artist/3316ca74-daa6-46f5-bf0c-eb7cc731731c.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 0xecbde2faafef7fe1094579ae14229ab03776e53cbaef5ffb16eb5c01fa706254. 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/QZES91889306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3c3dece6e27f17a9709765bb86ff86c5e19944af02558db235d3efb62edbfb. 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/QZFYZ1943722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b67198b78e99ddec6d861f4d2568b3c93666101dce3811a696ee7d307ef8b. 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/QZK6N1910598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e5a69a6885c3977a4a148ba83efd167e38f328bfab2b5190269a134adf58bb. 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/QZES62019040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e22ab39a2ecaccd5103d027b5554b0df847b99b4eb6cb0a429e694cf0d594. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZES62019042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e513fa8f41524a230dc9e1c835da11bf59f41d0d1e6f5bb025133841ff23f6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:52Z), 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/QZES62019043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc204a1c2cce813e64eec7491f8a59c531f1650dbf9c337d87a9fc684d6288dfb. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZES62019044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9beb7b66dda9832858d5765d4d311d09ca39374786fc3d6ea86c1cc94e32c5d. 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/QZES62019047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55169fb4ae1a7890d00ab3c89cbb574a0ac68de71b73a62a64127519046984d9. 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/QZES52109182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42335a9fb2635659ad92548c4bf436bb3fef41e5ea5d572750593c462c82a95. 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/QZES52109183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51447d59ce83731b2575f9501aa96a7518210347c2b5bf2b8cd5edb5dec712. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:19:40Z), 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/QZES52109186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d647f150f6c86a238d0bfbcc0b24df6f8bd5a22939a79875b21f470b842f1e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHNA2287481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7966cef24c030b12fef6deb08f4c935b0b097aa7ee69fc2f359b55f34a50e88d. 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/QZHNA2287482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b36234ee9bc896977813062350814bb16697f0e5e4a89725dc68040e524bba. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHNA2287483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bfb8163b5bb01725a321291b9d37c517ba37fd9248568ea389a4acfce28bd7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHNA2287484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc4fc5fd59a37e74cc8e71fc41d6dc29b0748cea0dbf82b44fb63d10b99012. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZHNA2287487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9741649ab9c40f4a51937ce948c14c891eea1a8bdde58cb2ed2a821420e55d. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZNWW2340539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e54afbb8012009f723c8bde73f5d02d03ec8b70302eb9665f28277c32557f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWW2340540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c8f620dfd8b018571061e8726af184d4f0c146c310c41a51ec3d7c331dd659. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZNWW2340542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716071b7be641c668e88050cd32778c42d320f79c353be061d3815f3d8a452dc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZNWW2340543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e7dc635769c440391663d69771b3228b539d086fecbe06f536d9911a749ee. 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/QZTB72332576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b3f6d16ed9e9bdf521b53a5c8a4753c61dfc197d39dac2afeda280a278dcb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFH2326515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c60e88ae2647d1de8ddf3c283bb5d77c96dbfbf034dc8283181e3597da1252a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:23Z), 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/QZWFM2371260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d9475f6292e6c23cb18719d1dba93bd01f59cb5f74f7edee12c38ca18ebe7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AEUM72400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d322e9bdaf2226085ac102e66b4138c7cd1921d736cb612d0bad7473840430d. 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/AEUM72400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71482ba3cb78f6b49b11dee6007971ad1ac9f5c38f95d5898b499abe3d2a335. 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/AEUM72400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab614d3315a3b151fa429b53ee9e8af9cc76c64c888fd3098c2c104c659347aa. 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/AEUM72400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6802f926ce35403849e0500da2006123c3b764338f483d92cedad862e00e037e. 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/AEUM72400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca5d6ae5bffe3c2b59674396eeedc02cc39d1d4ccd0436fd53d75abaa24cf8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AEUM72400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f87918ff69faa425f90ca31dca670d69bd80b434cf8d19e9a6142eeae14bf9f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AEUM72400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a5de70e7cf8654ee267c10bcf57e5e0fce689a7de06dbff51bc492f3503dc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AEUM72400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf62fcb0f0a039fbd26f2bf95a31724728e6dd19266a2cf5e9030f4232b2c1e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:48Z), 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/AEUM72400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e14b093c4d6302cfeb97aa88971aaf5470b27ef3bc7b15c81edb6e018411b0d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/AEUM72400605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f208e84a11924a64f637348135434983833faf3c48210264c956079afe3cfb0. 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/AEUM72400606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd3ad39a1f1201450aa4edcdcd757c8dd1d89d886440dd32f87fdf7de15f415. 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/AEUM72400607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77904e717e773f05186269d0e0158b6f86d22e5269e38c8353778eebca0669d5. 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/AEUM72400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdf148f33ef5511fb9a457af817713d5f3e02d51839058f11195c227e1345b3. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:18:25Z), 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/AEUM72400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa836b591c7ed342d0ed7ec7c863471d2b963bbd7b006daf5b79c0e9825b8da93. 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/AEUM72400611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c22271e40933c02df6f5592810eb1510a7f1abcf73194ae31191b95338d250b. 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/AEUM72400612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b73235695ee6256161bbd37e5ffd52de9b914748c88aa939f6c1c587f9193. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AEUM72400613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d83eb4ab182d2f72b9052ac04b2c7b966acc92eb8e1cabca52574efd7bfd8c. 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/AEUM72400614.