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 0xd7ca648908da80da2f523f0aa56ff24cfebadc3b92917ddebe53db624234d195. 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/23b9398c-5cb1-4b9b-b9b1-b368a35a78c6.json and https://artists.proofprofile.net/proofs/artist/23b9398c-5cb1-4b9b-b9b1-b368a35a78c6.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 0x21107f7a1a59f15b1fd1b2163f0559cb091ad9935762f113a13762dbc9940187. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR10S1733072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e720a06cfb954e3b7a22e15fabc7e268595bab3173186e4bc953407fc0e6f61. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IL5842131327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2ac0eeef725b0fc5e2889382cbf218ddc87ee66f2a31b9f8ec81ead8c2e7c8. 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/FR96X1913240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff0892219ec0d3da90f3df2ae8dbfe2d5f55873ef8ba5450d18cb5cae90283f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/IL5842131317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59fa05892f532d13d6dc1d4c53b1d761750eae15069e2f72366b5391004626d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR96X1822551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0db010311a37fd2e1387e11e7650dff7085eb8f67ccbf70842aa790ffc0a5b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:52Z), 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/FR10S2014563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6952c1cf60f7e9dd8175c65dedf2eae81f278fa9936d4be92b68e3bb1dfe6. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/FRX452055717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0526cc62fc8649f168e8c54f38c8481953b2e069de7025e6c95bb02aed442ba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:22Z), 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/IL5842132403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e6dafb8fd4374dea12ecb58f3fb2aaa093f049fee6a08c71336ea29e5b257. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:38Z), 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/IL5842342758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83431efa0562434eed231c2c97f67297c02681fbd4534919f2997e953fbac9da. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/IL5842447910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8f6836b7ca96c15a518efd1723eaf11c3385060b0511c2241f344b9145345f. 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/IL5842554585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaac0ec962054988099f5b3a2188ea184da00f495ca91435a11026f5e25a31f. 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/CH6541720978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c131095f085e4902ab049afcc93217cf136998dc4c9aa870f865f59a044a14. 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/CH6541720982.
I'm A Jew and I'm Proud | Great Parade Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49388c70ca934a17b28ee6ea2c44d092225112c107bc77e67409eb3e3fdad059. 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/QZK6F2488451.