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 0xb6c64b1098af39723ace6ebfe1e21a0b7112ec6ac80d04c1b5b53bdcaf4ac8c5. 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/a01b2fef-a722-44dd-bd5e-4ef0b06af3fa.json and https://artists.proofprofile.net/proofs/artist/a01b2fef-a722-44dd-bd5e-4ef0b06af3fa.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 0x26c1442d5fe67ac47d6ff799a00a6a64759e89ad44a5c1c47391296e751b9ffe. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:25Z), 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/SEWKO1300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44689fa6247618fe62e0a437d72d6f0626affe5899b1125a47425d14a073106f. 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/SEWKO1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dace703777bf3b08edfa996a0b1fe9ec88a3234c9c882d5f085ba50a6dfac1b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SEWKO1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec8ff30ec6a18ecee895dac45d487a2ee29a675ba4db2a2b5badc5983ce91f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEWKO1300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500fc01709c0d860157b4b602af15acd08eca087348335546e46f74ea3632f77. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/SEWKO1300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c050fadc18a9056245ab4d70ce786881b56b5921334e2ce67e4f810d3ea06e3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SEWKO1300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ece2d28c4bc8f2f4020ff5746799d389518785e4d7701659572e545569a376. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:28Z), 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/SEWKO1401206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d27c31d20908675e332ac23c7036178ca292a6179a59adcc1515081db9e32. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEWKO1401208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c006df9e92e07773d48a24dcdf4444e0d84b32b243b17a1ee61e6b441185b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEWKO1401209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56645e0775838c07634cd902fea4ef7db60d435a31038491d42eeb3180a0bf. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/SEWKO1401210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e296387f364e3714ea81ab8cbee521edec993cbc37bfa56fa0634c8f444f7db. 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/GBMJG1705101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d720417e1c8e2db4026cba9dca5bae0005659250951675ce8612a55d596ad9a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:04Z), 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/GBMJG1706989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1edd62c12172f288990dac4c26266531b9a218836f5e5000e1a6b6f52903d7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBMJG1706993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f431c2b188c92adca0e1f76570e1483e3bfdc57b2b078ca550900b1ced4c7. 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/GBMJG1706994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd681e1adff040397fa73fb372c80068b512e49cb2dad5ce6c2c164ea8b55ce44. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBMJG1706995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebadee1a56af8de4a4038078505b4f6f66a5da3e07d754f5bbcd79c83648c926. 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/GBMJG1706997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78e0d9aeb8e91b500ac26fac068983d7783132107c0abb4218c0012f7043a2. 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/GBMJG1706998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe707204d8eab93296975d68a877b29211841c2588c4a20fae97312a4227bbb9c. 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/GBMJG2110553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982272c9580e75016874300bd1e554be55179e5a7f2c730e67add1320f8c75a9. 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/GBMJG2110554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d533d1b37d2937ff3d10d8345834c00f310af304109d23a7fd45b70f0c34478. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ62291849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ea5fbacf6e2c4d9fbc31e81dd9df0a68c071c80648301c0d904817b3ba52a8. 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/DEU602310393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa93e25e47d073c3389b8c5a37cfe4a2e6e5a36d58a275b79d6276a477737049. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMJG2110546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02debfedb3563e34adaaea3877df4d0ddf6a740bcc4f3f35fba8483e277890fe. 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/GBMJG2027644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ea37e8333eba643316534ff4a95814250d6ac12fef18830634ad92ee4d8e21. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:02Z), 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/GBMJG2110547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c7dca7f4e49b0c587b858537072638b26d4c68b8b8ac906a6c081f6ac989f1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMJG2110548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddee30a638b2a52289d083e04c754aa71751e78277338a96608a9495f7a14827. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:20:34Z), 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/GBMJG2110549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da70ec4148140533ebefb83e38860ad09f4325ff0e329a9b00b5e1c66ab1ba3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMJG2019391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1af4767f992e8343c79652756ff182fa139a86e7e48894d8831ed9d41f312. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:02Z), 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/GBMJG2110550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c27fbb14e83fb4be3cbb6346951505e57f9cc5bee89f45acacafd54fea52b9. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:18:20Z), 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/GBMJG2110551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463a320d053bee18b369b56792761c7c955776c17b294cb5cffb6ec54d765212. 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/GBMJG2101485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982272c9580e75016874300bd1e554be55179e5a7f2c730e67add1320f8c75a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMJG2110554.