1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x59376f369e3744c3b7cd2509f52f5b290a4038fe101ca19426aaaeda371bc85c. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48420f8a-4c41-4141-b535-6eba426ae41c.json and https://artists.proofprofile.net/proofs/artist/48420f8a-4c41-4141-b535-6eba426ae41c.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 → block OTSBitcoinBlock must exist at that height 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 0xeacaceab0d416cd78193a1b90311d19edcc0c8c0e6d51f551816a812257e2906. 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/QM7281404951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f6a048ba45e46fd9f7125cf958a0c31fde075cdd59e8a1e47641de8e5cb9d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7281404953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e2dfe0bc8f8ca30ab19b6cbf358f717d6b09c8059eb5ab09dbc785b39ac6c. 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/USV291392629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf9cf5f3fde93a22844295a835e5ef57f2f56aa2b5082d8ac98de6036a6c03d. 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/USV291392631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f54af006c420b13cb15dfcbcacff94f72a2dc0e66747d660e58a1d5c4d75054. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV291392633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6009e6c654896a97766bb813f7ed53c42b0f2bead49193734e943a4084b2e924. 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/USV291392640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fdc123a17fb9bb10835935b0c4d190f3586a1fc893455b983cb3784e8bf7d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMBZ91659187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f7fa5229880b4f7eb52efcea6b07e6cf8134acf30944d446b00d18bece3d20. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMYW20300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e444843a70b9545e267bbe9b7381595779c8ff47a163441685df215cb61fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMYW20300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163aee6bc0ae4243a1b2641d7e9eb605d3e0fde96605c0340dc50a62dfc3ed45. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMYW20300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5349da51fb65f1fb36296884a8f14d54fda350c9e19e5f9ca609d7651df5f8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMYW20300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece2ec2ee72ece03b7e7a8f222536a28d7c8675bb45e9812d08960d1124b66f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMYW20300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afead982fc83b7dbf11118a01f3fd93e54ffe833d385350d30ebce53964ae81. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USZZR1010330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20df3a8dc935cabdac0f4d5d63861040507eb4466545b3f3af5bef801930b515. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USZZR1010332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ba67916b5193e5738ea27eafdc883e04b3d6735d460dc7b0a6a417a6152e3b. 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/USZZR1010334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ce53bbd322172db9bc52d09254a845cf13dfc46613e544623ac24c32ebc479. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZZR1010338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ed37a6b0ad6d061d86dfa0397eafabf2abf577c1634b6833e6456f37b19cc6. 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/USZZR1010340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd65b37fef97d16897e8b3fdd7a86cd45204f87514c39403e7a4d606a3fc5693. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USQY51612057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720aab9f64ab985f1c9d915ab8cc42c08c5c3847bb39b3488b24d4205724827a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USQY51612059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe029f00ddfd0fed05f37d69f74939500e1efcf6110743797313be825f75a4d56. 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/USQY51612068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6007e187afe7b2c20e1c982d3bf86002bedeeadc35a0c57426b13e13c30f75. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N21996830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7dac70f4573b0403f3f9a66b478044ef2e6c0c9dc435a3069083488f56801b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6N21996834.