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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11315d49e9c4c3e9a3cb1a1d60d5863f03864ea4f3d0cf2d89dc64839b5207d2. 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/058492f2-4293-44d6-9094-0d1b4a74cef3.json and https://artists.proofprofile.net/proofs/artist/058492f2-4293-44d6-9094-0d1b4a74cef3.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbb1302e274d60ef14b87b4b35818e31cb56100259b729091286817f54365cb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ZAC012201633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b4e810cee243d3ddd5778741b8ea0b9b7cd8ce59406ccb09c05f290cb44ef. 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/ZAC012400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381019a9bae68092184286c1686374ab24c1b592cfbb341288baf566b0654a45. 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/ZAC012400875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1484cc3531d58d795e4d66aa6a91ed830f0a87ccf2d9246e3a04d5762a9009ce. 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/ZAC012400876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff045b9fbd43eb2df04a45e45cabc80f55431417c0582ba3f9d7c9d024b7178. 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/ZAC012400877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d504d060b667ab8f7bce4c6ecba85c601a6804b1c6f9a2801c05e23409c770. 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/ZAC012400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727a421f79deb90c21baf3ef9a90ea25a8d1bbf450e765ac23f45906a34a07bf. 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/ZAC012400879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87adab28dba8283fd99669355ed2cac3c6e250fd8363b33fe12d3f8474e140b. 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/ZAC012400880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e2b255232d7231f8ea925749912926ae48724398c365c50360ed3dc243bef5. 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/ZAC012400881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fd965f7a32bc2a2ff898a60f4f5eb550e356a5160d9ec5a0f784ad7b7c9f35. 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/ZAC012500157.
The Gospel According To Artwork Sounds Chapter II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59178d5129773d2cf0f9e528c7ce49fffc156e27c3e492ba24e78fddbf5c1eb3. 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/ZA56E2302131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aa26d62320aa1bbda0bb2369dd4607ad2e5fc7fc36539dce66c5d8021f110. 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/ZBCKG2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189aa26d62320aa1bbda0bb2369dd4607ad2e5fc7fc36539dce66c5d8021f110. 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/ZBCKG2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47f374886c657127af214b6b82fee150d7490ed62419871c34638d3bafa431f. 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/GBKQU2449749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bec6903a567de23c60960f2db9358a5cd183ca63b17bf5b2b680694b1e289c. 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/ZAUM72301063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f6e2705a1f48a618f76593b48e163a39491de74ce80f9b5ff860d4c769673. 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/ZAUM72301065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889d2bfcf5010b58fc37a44904ab4045520fa4c63016541d96579e5920b66ae2. 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/ZAUM72400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37595bbb5984ca3c00d7eeae9d842fbc82d195f5266b867fdeffbfca34cfb610. 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/ZAUM72400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb978948338364103dad1ef50f38e79b55ce9a67bb4c020e0f5d622b7b2e2ec. 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/ZB88L2400006.
Wadlala Ngam (feat. Zee Nxumalo, Cnethemba Gonelo, Don Scott, Bandros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eccd84a8e743363f76833ea60c4b0d2e8d052bf4beceffddae0b696164a2b0. 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/ZA56E2306357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f413b4922a5b27ee31a99f0cc15d7f59ba1c77696349e42ed04c004760133. 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/ZAC012401422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d74d358f6faa7808d09d28d02ba8ef32eef30b13c849bc116fa28ff9a4d408. 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/ZAC012401423.
Ina Mvula (feat. Cnethemba Gonelo, French August & Breezy Sax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8eb7fdb6e25aec58f318ab48fee87301727e1e32b7625fdf8857c0475d8c6. 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/ZA56E2416734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c409114b2e5c54c9410071feec0fae8c0b91ebf758852281b663a1768d2bed. 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/ZAC012301123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b78051f41bf25909a3033cf59092eeac6ee8aeaad4c8939f4373d799db132. 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/ZAC012301124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f9263c1fa2ebd41982745643bd09c4a777bb2bc41cbeff83cb039d3c973de4. 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/ZAC012301125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd935b98bdf1f3626d85511c49ff8574c9c83f1578a842268d8e04cf29c329aa0. 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/ZAC012300858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525dd8266a3c2634b485bae6ce39d17362b1a9d659d0021b64a9658080104538. 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/ZAC012301127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52774b9a2a382aceab4449a7e9b994f1bfe1b395d868fceb0f74229f556f414e. 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/ZAC012301141.