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 0xf09a2cfc2144f6a069359095fdbf7ae7274aa6ee8cb51a024e94caec0dcc4928. 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/ae5a5a45-c993-416c-be7c-d26100d82859.json and https://artists.proofprofile.net/proofs/artist/ae5a5a45-c993-416c-be7c-d26100d82859.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 0x23a9c76518bad5451cd9cb516844dc1d6caf1beb87a2394c6a218e21ce9754bd. 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/CAN112400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf524a806bedcbc301e3effcdbf894333e9c732c5442b5e52f2daf93bb2211155. 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/CAN112100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf524a806bedcbc301e3effcdbf894333e9c732c5442b5e52f2daf93bb2211155. 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/CAN112100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287b5430fc16c74ca72bd689d9baa46179c78ab6a1594e2cb35a9013df1f3c9d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CAN112100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6fbae7cdab1dba6684a4720e3b39000bb8bc83ceae4c4561c45f49dc16c77c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAN112000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e11a53e1ebcc192cd25b1621e37efb973188f431cc9276780e6a72df57f2cf2. 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/QZTVM2129315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3345b7288fa9a8717d71c753565064401754fccd2903e1cb75f881a1f03e93. 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/SEXCG2100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d29447ae34064f2882d2a823084eb8dff9d16cf076cafc57af58f597c51023. 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/CAN112100813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd996486166c66a8105a1bfc9b31321a602b109cbfaac46c68b55c9e3f0484216. 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/CAN112100814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93aab3a7fb9b778468d2e3f463a382c31bcb7e880d1693b27baaf425bb94846. 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/CAN112100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308f027082b960d38257fbcf6a970249330a65f1f9740d3336924ed7f41b3a94. 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/CAN112100815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc142541e25a467585b0bba66222988903a59eaf0689c69821176714d39ce8a31. 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/CAN112100745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f59472bf9191615fa15162d77612d244f6542a37cd86d99607c7aa2ebe01ae. 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/CAN112100816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58ffb7697414f72a4d3ac265a9d48a3ca11dc80ba4cf2c39e945fb647012691. 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/CAN112100447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d5afdf0da394ef4bdaecd0ddd710b01cf340c92168962c6c7aa90da08ca7ac. 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/CAN112100817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3988e731b0a9f2c33f5eb03a3887a7a32530fe18a27081d789d295206ab6f. 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/CAN112100818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a9ad4e49a2b604f78f9e4dc6e37257cd832dd91ef5689e8492adbf8a9a02e1. 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/CAN112100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287b5430fc16c74ca72bd689d9baa46179c78ab6a1594e2cb35a9013df1f3c9d. 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/CAN112100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4868687fbd37f099a3b0a785b431687b57e9710145fce683509f68058a86962. 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/CAN112100819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0941a4567ad29f431da85be0a9b4c899193476f28ddb2d6ea74af3dc6ddc7654. 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/CAN112100820.