1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x47c97674cbe28018604ac252c14f6b79e5d2f5119ff25ecf5295ddc17729a070. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57771129-ab9b-4e23-a003-7f0d004bf212.json and https://artists.proofprofile.net/proofs/artist/57771129-ab9b-4e23-a003-7f0d004bf212.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 → block OTSBitcoinBlock must exist at that height 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 0x1b326893e459f11082107be7af2518d0cedeb8daa09e4c68fbf3c1b32b470db3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FILXB1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0ee1976a3983be5e07f71b2086c961a9b6c31fdf4a3a0ee52f6cb72af2643. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:08Z), 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/FILXB1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b4d657fa3887a5223feae67fa6777b7d75638a1ae91835f2d98ca70a88b1e9. 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/FILXB1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f9bd804450b19158bbe88d3e861d56aa23dbc2856c8f16e8aedd31cbf7cf9. 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/FILXB1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13edd6b617dd66484044f43fb46be2f44b324b08554a0b5014d60ee6efee5a0d. 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/FIUM72100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2109fdbf3cb1cd1fad807b8e281b25e405e54dd7e149839ef24689a2bd7a71da. 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/FILXB2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d76df925144ed790261c89f6a7372c50799cd87033aea60fed82ca10c5025. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FILXB2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ffe8547321f6fa9bc59cd8f5b6ee63b1b84104b13c122f61564c02d6a39460. 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/FILXB2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ed5a2f16606cf85a24536cdeeb442e822b2271d965bf4d34d677a0c320a8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIUM72200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33253997856b6d5bd5b8c4c2d7453af89c3d55ba3662825ef0976dc704c329a9. 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/FIUM72300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0d1b29e0f7d16ae771e4a35eef5e774d36b27f014d3e37ee8b018c92ce8c7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIUM72300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb8e325199e89deb602d9afe20cc12a436d0e8cefbb4544d23566bdd888a6b. 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/FIUM72300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0be2e4fe33a992162dfcd271ea68a36ac3426d5fb04c3d1035fc8f5cbc7e4. 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/FIUM72300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8210e8974a71f03747c7a0461e9c3c7ef48201e782780edf557ac71662b4ae3e. 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/FIUM72300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1bf5148d2941e77e6dea27210e0c04ad08a17d3ce902b3bdbe647e51f04ad. 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/FIUM72300325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6346066ab4e91ac72b40f4bf19e16fbe85dd2bcd9f957f83e094b3234a9a686a. 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/FIUM72300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e74a8fcf062406925b14a9807fac75d8ee472c733fe7a0a62037a71f9f7ac7d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIUM72300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2768921cab16b3f447de265fa4fd851952c0f0fca20728a2e90246160e70fb87. 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/FIUM72300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab823ef9863fce4df8ff246fb30bfcc2fc5b73928749e75d8de1778a1f0f7e1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIUM72300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc92768ba21ce63bac756eb2e3f99bbfe997def819747c8a19b64b71e5c367a. 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/FIUM72300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab2801cb92636d32ded9cdcb5f1609a2167f78ed4e7355516dcd483fa5f95a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:47:44Z), 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/FIUM72300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f06126c8d0a1488248479a1ddc2dd3698e9d5cfdc92171226ec45cb4c2f418. 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/FIUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936890c71c65fabb9cddbb687cc09375ad91fc92ee3088b5c88d043013d408c. 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/FIUM72400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c123501cb1627c1a8abba12ab84eae5573a0c88877e48d63011367ddaa053. 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/FIUM72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c123501cb1627c1a8abba12ab84eae5573a0c88877e48d63011367ddaa053. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FIUM72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62964159301cf97c6bb5d41cc2f70164e8faf3e0cc6bcbdc975b2a3e49a65f0f. 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/FIUM72400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f06126c8d0a1488248479a1ddc2dd3698e9d5cfdc92171226ec45cb4c2f418. 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/FIUM72400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9dfc0bce7a8a788316ef81c6d9572ba295614f95651ec64d4c5b04c4cd07d2. 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/FIUM72400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0ed5a2f16606cf85a24536cdeeb442e822b2271d965bf4d34d677a0c320a8c. 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/FIUM72200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33253997856b6d5bd5b8c4c2d7453af89c3d55ba3662825ef0976dc704c329a9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FIUM72300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1caa79bd9e24cc21aa843ace8adaf70dd01e6716819f9a95d1f161056d7632. 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/FIUM72400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd69db754bda037123d606890cc65028ddaf49b186e9d7ac54c9be57a1050e09. 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/FIUM72400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa005c4d4a735f2f1be8c29fd664c63ac68dd50a955f95b14963e24f65eafcf9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FIUM72100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa005c4d4a735f2f1be8c29fd664c63ac68dd50a955f95b14963e24f65eafcf9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIUM72100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44424fd24bb46ef7aeaa15df4f4e034eaa4e9442b4be551cdcf78ff91d7542ea. 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/FIWMA2000125.