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 0x31ecfc6515d7c29ac935f308c55a429ddc520308d18f041dc78a60f637a79d78. 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/6780780b-317a-40e7-8e14-69ae8f2d365c.json and https://artists.proofprofile.net/proofs/artist/6780780b-317a-40e7-8e14-69ae8f2d365c.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 0x9b230a384419c4c73b77e683c4c14b920c6dfd2ba78de928cf12e24416b37d7e. 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/QZTAZ2587891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3ed033254960dc996e002970c2f93a6dbacf4c706f79b9b388546a3711f231. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAZ2587892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c73a693d4342e12c16277cbf9b6039fdf832d4f7aae5d79167c2c953bf36f. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTAZ2587893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275415cfeb6a4976d84bce9452f9533fafd3e41576bc112350cfe8bfb16204e0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAZ2587894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebfd45b49631cb1fb0e8f29d8eefc432454d3a8aa35bf2f0fbf82a95b55c747. 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/QZTAZ2587896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8a3ec9f2983ae7c4f54ba52199801bdd3f408e2a47bdb4f4bc021d16f05cdd. 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/QZTAZ2587897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58114b1f745401fc4c25f863b4b901bda8e88e225e6c13fb51d4a7220c56c059. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:47:11Z), 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/QZTB22526543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2151f7a311535eb691d4010029addc9594e2a20a4a2d4971f5373791c6f336ce. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZTB22527996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda751fb8856b7660f99a01ef85b3b6993461595d31f1cd1fb2b5302cfc466298. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB22526551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3451efcc4ed148a3dbe6e05ff68c9229b0553be117597eb5150ec581d4599fa1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB32532550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280b687cbe86692496a559331da6aea3df268276ecb0dd879dd2ae7662e86353. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB32532562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c38bdf3f3408e3bccc85f53eb0e60c0d419fc1de5e50f3af4bdc621e837a4f. 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/QZTB32532567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8d5f3f5e4915229aed9f22c11d4471ffe10922459e3002ca78e541a5482e27. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB32532826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86dcb6bc8414e657c52583d4dc04943774e77b78d63809ecbc54435d488e76c. 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/QZWFM2595967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61464f35c7679eb1bce8363f96d20edd40df23e28c1d329fc064c2237f99183. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:26Z), 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/QZWFQ2538155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53e8f4072912415a7625536d6d16d4987a717dc3e8696b1275150507144d5d8. 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/QZWFQ2540282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68c0328a44addb719c4e2a1dd231135d1eb0b26d2f24e47fe30dddc7911a57e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFT2543544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aea50b779ccf6666955fe91ac30244685342dfc04ff6807f599eca10176f910. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFW2590257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9290ea122499e298d68317f3991b5f5068135133f0139b13ecb81a208355ffc8. 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/QZWFW2590258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a00d7fdab09eb4295ed4f15580fcea5b5727bf80faa0dafc5b3466e31e3b677. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:29Z), 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/QZWFX2553642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93354f779532208348105bc5ad6a1d90a5e1349f64512ced85b26cbbd1512129. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFX2546852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c297a05eeefd76f192e4311624888c0eb6b147bd60af81adf0d1b2cf6782b98. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFX2549294.