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 0x8652bf852bb4370ee3d01bf00e8ea49f32badf99f59bbe68a6f5e81fb6b685d3. 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/bb1cb3b2-d130-48cc-a6ca-6775b7723515.json and https://artists.proofprofile.net/proofs/artist/bb1cb3b2-d130-48cc-a6ca-6775b7723515.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 0x04ffb1a61f21cb6beb19c74320747eddfe116764c16f21eda8ffd628ba6805d7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA61809768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b38234479080ac8f8e6cbf41153c25150199c3570f382927ba15decfd18474b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZDA71888533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc793746be8a9c5d13cb9367b8662da9a3cd573c03193ffe12ee57cbd4d8a241e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZDA71888534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6480d00ff5e0430fb16d8dd7cb4d94bccbbf00023bfb0e66422fa630c93a1fed. 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/QZDA71888535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894bff22d894c7474c2349d6b7e7443db23c68874992b62bf1af7e356bd803ab. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZDA71888536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc1a406ee258a1d85ebe0544343436a73c02c64ca4567da607d5ae4c800b8c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:08Z), 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/QZDA71888537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05325c65a1d50daf20235159a15daef87336c713513b7042c1cb10de7365d7b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ4JJ1856234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed466d20ad4e0d708184c841e7b4a3d577320404ef03ecf639c479ec98e16b6. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZFZ61955449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ad69a7a3963151cc5fcc957fd100f50c489cc8a86f303b22f7ac1436c9399. 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/QZFZ61955450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074333bdfd0760cdd2e0b4d1370f144dbfdde904045ffc01dad10d93e498faa3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ61955451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1232403503dda61868d814eb8c3040e0f2f2f0ea79c2b31f467b6022e6f50c7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZFZ61955452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112581d4386cc04f3450c1ccd320d82e97dc83bbb0e1cefe41360e714f201403. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZFZ61955454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b98a26ac0533029fc3a508e90c4e08bd9ef2694c57ab74a283437a997704b65. 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/QZFZ61955455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc94c4bf00f81d9c566739a3e3807aef67c3f310f36afcfa8e8af47dff3d166. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWS2073617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c9681bcfd8ec4edde5b28131cd3c819369a5ad142c8a8783c96d086f4e018e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWS2073618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e1fadf84542bf6d4be49d9978e57a537e93923429b02ad44a8dad9dfd92e8d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:12:06Z), 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/QZHN82153208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a29aef803a9c1de95e243a48d708862ced246eca23535b99dee9f164225e8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHN82153211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e374154eaa9e4433137b758c02bc62c146dc37b45ccff1031e54ee5a4375db. 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/ARY4P2209968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8324caf2932140e6537e2240072ec62a3a538fda9062e57e337ca48dda72ed. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ARY4P2209881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bbc3cbcb8ed494fcd8f7f640bc72652ceaef7bcaa5d8b7d50fc4e76187632f. 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/ARY4P2209882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457a923058aef9df28ea0aabe3ab049ced6b224eff3c649685b52be9e5b21718. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ARY4P2209918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770d1271613a31c7cd5b1c601ce716e9d5bc7ba6815617ad25987fb9e5119fd6. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:33Z), 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/ARY4P2209884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2ece267d26bff7c0a7e36820196eb5e5358114d9a8df3e12258ebacbf5bca9. 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/ARY4P2200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37f00e7f84bc1d7ef740c5a18bcf4ab0f619cce780a4670d666e846aa46798. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARY4P2209887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e374154eaa9e4433137b758c02bc62c146dc37b45ccff1031e54ee5a4375db. 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/ARY4P2209968.