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 0xbbb060be041d8eb73c88270229c82e1f037aabe4be6958bd2a39f90431422e62. 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/f8cdbb80-a52e-4063-bcfd-0bf6dae7a73a.json and https://artists.proofprofile.net/proofs/artist/f8cdbb80-a52e-4063-bcfd-0bf6dae7a73a.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 0xd26c646eae0303c913410cdd5b6cd0f8232ec2d2ca8f249cecd7cdbec5ac21a0. 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/SEYOK2100935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf6904e9b4451f283fb70f0a168cb92b96d676c40e3759647a5f324877606bc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYOK2124738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0740b926afd74178227a2c6be57f09b936d9280e2699d41b503708ad1d61af. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK2125998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc5b1ef88c4a35936ba530c398de933c76dc9dc1cc78f755cf646b0416833c8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEYOK2124718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87e79c55b825397a0e261e631217e6bad75be7b0b8fe5a1b469fd662b158ef0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK2124731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2927f4b4ac82a5033c90ff1c987276151bc6d9f7ad9bbe1f38dbeffa2b90ab2a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK2124724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152a2563cd0520d047f26b989027d56c5d74671cb5c565ca13c801d04c16f120. 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/SEYOK2124711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92d34f9a8742e2ed34303859bf37b8fd005244c983b3cebdf0963d459d7e1c5. 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/SEYOK2127992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc117144326f3abee2916a9600658f6c3bff8d985332528119e993d1839cf5831. 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/SEYOK2124733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b730305af86531bf6cc054362252e9a8f021f86510bc5dfd2c120aa1be9b6d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEYOK2124721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2633c5a58fd1716c45b69b3f67af3db07a2f3ca55f0d6bd87e08e994b4b50a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYOK2121147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d40a10895e0f0c9eaaf7bf402140611730ee50804bfd31172332756ea5769. 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/SEYOK2106529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83c5bc897914b796b2ac12fbfcd7c76374f306c3761fd2849fbefbb79fb5900. 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/SEYOK2050659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ecd2bb407e7f5dcda0c3cec5c1812399d8d01afb55cf1d6e217ba2a9aac18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6XY2141652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c98802536c5b0306fe922ec626555251cd4c470358e113e8b2627592d4466c8. 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/SE6SA2127167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3a18a157a0457ac6d78be2548a4edbe75117cf231ce6fe8a3ccb071cb2c80b. 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/SE6QE2156366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9cc1038ce1fe4ad76c86c63318aac743cfee7f43aead04144f923e4ee3c6e4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWX2081622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05658da09df3d92800efad80806a220f335e79c20f784492843ca6285cbabec1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6SA2044324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b501124c828490a994ec396170f56c60d0670eede22cad31c080847f17cc35e. 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/QZMEN2018734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1cb366429f42858a1adbbe4442ec3cd21aae6dcf7dd937ed9e87b7a641e9c9. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QMBZ92042969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b76c9b8ff49c0523570a6e9ecf984fea5769bfd48dd2613f6df30de48976d99. 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/SE6QE2012464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e11956bdc0a44330ec95e0e47fda62068f33c22dd4612873c2f7527e8bbd0. 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/SEYOK2034880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dea7d32b122e6c058f308d2b12e54454935d69474e7ec0038919b80e89adeed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEVWR2001701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289eb24cc34bcaee055cbf048cd21f503c21b2d2b7dfdc07881cb8cd15e7882. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEUM72000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a1fab9d0012e3081076b4fe081e1ed79db4d469518945fd001ba03ad54cc7b. 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/SEVWR1907001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a73be8d966b064de88ceb3754ff058425c3b5d448f115efb123b7fec7f61f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVWR1905601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5c7601615fc622ac3c7f6e6e3ba18a49ec2720cf4173a849d3a98b037755d3. 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/SEVWR1703701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579bf8b45d1a7c46cf346161723d4a385c9854d6920371443856b292c490c8f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEVWR1702101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bec16f455e53499d72d0cd14499b3d721ecd1290f8816af83805e80b6292b1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVWR1604001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b220d0b035929a68233433aee4f7cfc343cb262e24af7e178cb903b239f947f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEVWR1604002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c558d9c49be6d6f547e7291bc79fc52c87b966780a1bc2b70ee3bd592199477. 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/SEYOK1420541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26fdcdaefe33af497ce5fc7b0b43ab73f86b836df9878001ae9837eefde4048. 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/SEYOK1420542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf8fe92227161673d0004016eeb187e217c81c81265f2af51c9286a4f124939. 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/SEYOK1420543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a64b5504fbf559077fa4e888ec93df6fc5a85ebebdb2fc6ebac4162a2af01b. 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/SEYOK1420544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f36789e8d3800859f43ea19212a59745850fca0b696269b7911b24e7e4d6d14. 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/SEYOK1420545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1834c8595b674daa4123874dda8e7e2a942fcee2be8960c96505da698a7e73d. 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/SEYOK1420546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8478267015d3131a5e4bed9d07ba1d429dd2d0147c74bcc132ba7a9f35caf94. 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/SEVQU1200701.