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 0x703180e94e384f231d9d495d131f75531b16fb6810d81186d9dbbe5fab34d0fd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e342aa82-ffb2-4558-8094-322c21fb1b94.json and https://artists.proofprofile.net/proofs/artist/e342aa82-ffb2-4558-8094-322c21fb1b94.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 0xd43dbbf7c9c7775b4bec719bd4205d5c292a21d2eef112ec2bf2c4fb2f3f35a3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:59Z), 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/TCAGQ2286628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2596f7ee49b885e94d7c661935a8c0bf7762cf2769b541b6e4985ef8f7c260. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6F2277250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc9cd4e5d60e5ab4fec67dc715631fe4c5016c936eb5fc1e1efc89af557fa19. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN52248347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73536acd7ba19da07d54a8824f598ded36a6736891fa7a76ca9671bb39616190. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZK6F2277252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62265339cccb7579482da539b69cc281d699ecc7d520430d501ebc2c45a577d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:14Z), 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/QZK6F2277254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09698a1bc1106dbf936abb5ab1bba351d8083371ac05d863c92412ca97dc67e4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:11Z), 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/QZPLR2216030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd7232f745581a1f770658b9f5077e2cb45367f9c9ce80e4e478b90a280699e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:38:57Z), 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/QZPLR2216031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b39057f416a8aac9ab8407c6639ef1d9a0dcce6428bfc16abb45433f305b50e. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-22T02:00:44Z), 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/QZPLR2216033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181182c80f49ae5635a5d15b50b98b0c6eb338cca565b6f4f8b3c378ac772e8f. 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/TCAGQ2237280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03f92e70530cbca3f7d3c11db760f4546886d443fbc0ef057f74ff77643f514. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAGQ2237283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18613324a97a56ff76f6d159a7506fa393def49dc09db603009c414601e9e504. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:31:53Z), 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/TCAGQ2237284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a3e3895b935132eb52e5c39517e5dd952b0f5465519614053dfa0600846781. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAGT2326476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f3f51b2cc84db812af8fa33f270ae11a19b003479e9787d313dd91d71e48d5. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:48:53Z), 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/TCAHA2352918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d716e3b8497c76d0f4f7916dda0275a26d2a70882c0da391fc101679106f78f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAHA2352958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2634d9feac320fab242747e19e4f6d08d1fa669d74c88cda73b078c8335d9a19. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHA2352969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65646f56801324f42b1f2f20f4512fe69843e991fbe9ea5740e6bddc0dc1069. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCAHA2352973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8085404604a9e18dd6e1c6064ce670dc1955eeccd8ac56804f1bd531b0a58ae. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHT2300994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106886f31563979f32464a1cb2b6b0ca278daf920eb25e7f47fabffcb1061d0d. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCAHT2300997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f3d760b909d672673bc7d3736ba1500e9450329f9772cd5ca94f76b7195ef5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:33Z), 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/TCAHT2301000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a97676543c948b3d9235167b25e78b590e703b670fcc4f6b5b735796bb36d. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:36:30Z), 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/QZPLR2216027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5604e720b73fc5e57ebef2655676f6b1c6c01b45addcc08b6521b18973f9da. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHM2397186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cce74e113c764d73e9aeb2bc06c7e29d0f9c2bf7d7fed0430f111333a77ecc. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAHK2371505.