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 0x37c05a89baf049858fc8f03d27bfefdeb8ce098ac47fdb78f4d574b052a5687d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eafc7f50-004f-4f7a-bdb1-7f4c32583221.json and https://artists.proofprofile.net/proofs/artist/eafc7f50-004f-4f7a-bdb1-7f4c32583221.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 0xc12eac0923802c582e76492d00911d9c564591926e336b3779f38d0d80018d5b. 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/CH6542368148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f57f3cdb46f3e91c4455054827e3dfaee2b4191e55740a1f1478519cc778703. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH6542368149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99626f9e1cf78f169ed9039fe63f0a0effd1832d7a9f971c72494aee35e16de7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6542368145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a4655cb12bc2e83ce4988ed713f7ed2dc65969362ae7bc4175d161d2248e97. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CH6542368139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ffc2d90e2974d52a0da44c2bf2e85c8a719be01425b105da6cf3b550942b28. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6542368140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54bb84dc86a44a9d02881563cbf5be24add58c5720365fdd412927b7b87990d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6542368150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619bb8c3baaf917c857dcec6ee5e74509b70cdfd9665e1626fb236de76eec93b. 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/IL1210502902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737019056dc8da8ebb975742df7abc9ae0ef7fda553056db671495c1f15bd695. 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/IL1210502905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4601395f1e3711a3ccb411b406850f9c779250c314a6b30d4724e6d3a239f62b. 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/IL1210502906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47146f8be890822ccc422492e89cba3db8dad1335b08c00d74b08055fca8fe65. 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/IL1210502907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f799e14f522c8eb13934da6488922c8b873bfc2c79f13f70036afe99d9f06f7. 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/IL1210502910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efa5057dddca396ff7507582697753cfce5c8b2a0ac3899bdf1b55c15f32827. 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/IL1210704203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc9edb7489cc828d2f742bde60c5b2d17648d0e6b5c33a2b5e52163e47e41f. 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/IL1210704206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9f5cd4adbb22e0ea81730d6b4e22aa1169f15644d41f133ab42d6e9a7d1b14. 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/IL1210704211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98feaa908673baeb4489cc328029444adb4c675471a005c28815908a7a226f1. 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/NLD911000132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163256695c3bfbb1c791862b90400404dd85c100d855e794d7ceb6e387a3ce9e. 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/GBKQU1449182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c4f3ff6f6dbdbb68da3a9959e45d679964fab5a64628b966bd13dedecf2fe8. 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/GBKQU1449183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65debeca5bec1001784fb716ac333c93306b8bae03f9b2a6cc0866a1fefc823c. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QM42K2317613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cbefd87be2e792524486ba6491474a1d178927f5cbafa101500c2c9eec8f37. 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/QZMHP2307299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f6fa54f3b0b949c283ca3fb1b44fcd44ff30a15f3c9cacb6d5db41aa0c5110. 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/DGA082316764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2987eb67a8d3fb5cb8978eba3d2b537f7ab5932f15f334e6a33a2231be2f8c. 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/QZMHK2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8370531560e176ce029d412da81a9dc56329c637c2adbb13db43d61744614d41. 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/GBKQU1395784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdc0e21b7039e6c8c42424fb98eac1c58236b615e91cb2d587fa0b9b7ec4a9e. 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/GBKQU2417431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8911461ae1477aaa59ab5c70c5ffc1ce2395db4299e8983d8eea7e63aaad52ea. 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/QZS642486308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a190750cfe837c08aa74c3cf61b1b4a2c25c2c1394386e6eaa772e13937e26. 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/CH6542444910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5069257ae2ebfcd736abcf337dd04b633bb55ac223086160f951f4f95f21eef. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH6542444913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48bc9bceaaf1a9fccec815c11cd63f0da804f983bddf16ee7da63f08b92e0f7. 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/CH6542444916.