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 0x54e090b0334ab0f8e7a164020e415ce110dd90aaf993f5e6f3533992f55e53ff. 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/25b3b6ed-798a-47fe-a328-a4bdf4a9b2a6.json and https://artists.proofprofile.net/proofs/artist/25b3b6ed-798a-47fe-a328-a4bdf4a9b2a6.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 0x8d09095bcbfb6319fa34b7f71c25abc5a418b22dbef5aef89acd94852ff25062. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZSU10900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e829c022232156a7287ec1240a5c3577f17f46bf39c80e1e659fc1412bd59e3. 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/NZSU11400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bc68d81ac89e97ddc3a6b38ca03daa9b0969b9b2bf1d56a98f013245465003. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/NZSU11400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327345fc35c9e86fb55f318118d364431a0a3714a565f3d5759867888f377cf6. 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/NZSU11400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30ac516823b940ca634c7011e61cdfdcdf7a9824a926417e7b7f867ed309e4e. 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/NZSU11400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6e2a395fb87578d55fa5a6c4dadcb0925d62f54a576a159f88e71da61be072. 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/NZSU11400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a6bea535d379f5bc8c504e3a0020a4464ac4d4432363ef18e90ea11e7ca3f. 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/NZSU11400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fed84c05123f96dc32d807363b977dacc9a5d9ea0fa921f6f4259520f08c80b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:11Z), 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/NZSU11400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b668f1c1ab46e6f531e45ce0f6ff29c896fd6cd94791d5662e71433dfbee3f9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NZSU11500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa96710f62bbff01e6c8801e286a6edd70db2211c68e8e2adc0be56026c5c98. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:03Z), 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/NZSU11500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf980860c84d453e2e15f389288de472cc572e88004e13e5577808f12f0f99b2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZSU10900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d85ebf5e3d283767d16f3252b6501328299bbf97bbed7f77c6cde7311a769c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZSU10900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58887a8c4e2a1c52605b8f695eadd7d71c48720667936d0f40569c5eb0b44340. 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/NLM7H1800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9de9b49a4e7387bc05080fe63bd47645caa531267261a2163db74b5f777cb76. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM7H1800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d1f6f9afe97de367643b3ce0bbc99f4fe6710d20c92c513b1b0d937fb82f9. 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/NLM7H1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03558d3112c3e7cb5b2aa6c0b9ee8200fb136fd8129ce34cd0edac6d611b604d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM7H1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e3fc79dd28ec94968951f23b169abbbfbc3b820a7e331581bbe71361e6a0e. 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/NLM7H1800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ed3454ff88f1c4875fe69028ce76de8e5ec4cf1c31affd3cf6bfe2ce752507. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM7H1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c491ba6649afa5a65ab60f49232d4b3e2a44f338f5f01ac87ee66c51a2515ae. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLM7H1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76b63227d01caff1007b887b51d885df54f69325dca7a8d293be05ddd0f18bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM7H1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469f9d0a623f5d5cbc8a216a3e1825862e9f0a4f19cf13218407acead898c3b. 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/NLM7H1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad3f50143ae91821fbda8d711d78a2035cc4927d1be2698e785d55204bda8a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLM7H1800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c51693992150757a571c6596b03fb21db68179e4f67d8a0e7875f054fdf566. 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/NLM7H1800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3cc06e4d3f1bc7886b70df7454ba0d669ac2534324c74975fe871075d0f6ea. 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/NLM7H1800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7789642170790e84f0b2b051966f2fd6889605a3d79b0e2879a3143b463a2f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLM7H1800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561dbcb61eb20b55b5d5471ffcfa21aebf9231ea4101c7fc3ceb534d26551e94. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:51Z), 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/NLM7H2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbfa864646c274ae7f38bffda7d65c947bd883ff820f187064921979353644f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:39:06Z), 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/NLM7H2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec973bfc3b94fab65b17c04388546a35dd730a4303fb818a18305d2ed0f30410. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLM7H2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf08ca07444af30c95a46e618c427f5890faa647221c53db95c3b47b2b317f. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GBKQU2397038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cf08ca07444af30c95a46e618c427f5890faa647221c53db95c3b47b2b317f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKQU2397038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6facce1add7d7bcf3ffd89e898cae3c389613b749442888bbcdf975cb00f53af. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GBKQU2397041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc9d61896e6a322d9f9e052c885b1088e14aab3a82aaa0b3035d610c000a6ae. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBKQU2397042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13af1711cb9f5cd8919262497fe79db8be05892e8f9879ed3e19022a248e89c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:01:40Z), 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/NLM7H2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5779e8644abbe8df236f29f164999d7e320c98c69cac48e59ae2efe16bc645b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKFJY1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d673de4e608ccefbcdd92442ec3cb6faac4026bfbb84cee758718d1bba364d. 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/ES8741502110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af2944e3b68219f61ec6f14c60e3e1a4e2db3c03e759c322849b3c428be933a. 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/NLM7H2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76b63227d01caff1007b887b51d885df54f69325dca7a8d293be05ddd0f18bd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLM7H1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b1478a7f8c27749042b33544164f4c06104a81c6ac73eb4c5c8430cda3242a. 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/CA5KR2211387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d1f6f9afe97de367643b3ce0bbc99f4fe6710d20c92c513b1b0d937fb82f9. 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/NLM7H1800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4a658cfd524157c83bfccda5fd601c611f10e8bc9359d952362c6427d7aeb8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCJY1300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5b1b2f3cd4e920fe05d903348796618a4df96be825e3ba112b1ec82a00b912. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD2410483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5b1b2f3cd4e920fe05d903348796618a4df96be825e3ba112b1ec82a00b912. 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/GB2LD2410483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4917168ae82a7f5050dd7bd26f1533f41d2c69cf5c1d72b30a0c2d9d206e8692. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/NZRI11602404.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7086951306aac0fa1963640f5f3339795e508f097d942a42247f78147750176a. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBRF51800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8439403df8518bbf3c316d600cb5895bc744945385804235d4c08ed1eb024f1d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLM7H2000019.