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 0x3e06cf71e871d1eae629fe9ce1ce90e90815194abf30c9654f777fdf3820c0a8. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d373aa1e-b12a-4d5d-831c-16cef3bd41c4.json and https://artists.proofprofile.net/proofs/artist/d373aa1e-b12a-4d5d-831c-16cef3bd41c4.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 0x100cf6af940461d64e8c43f2cd7c6684cd05d44f2b0c7175b9bb1080d87a7e35. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:27:57Z), 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/QZMZ92524701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d1500c7ea6a4c87d7d2a65b8e82489ecc4f3206ce29fbcd6741aa20ae1bda0. 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/QZMZ92524753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35cb8081e9ad1d73b110c0b261cee1119313cb287c0d02e1b45acbbae5a9c89. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:44Z), 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/QZMZ92524774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa14997a148d68b0d6165764c43ae5f9e85af277f1a370c2f55f593ffb6ea636. 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/QZMZ92524775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c142812561928c0b4e91eace1535635a4ccf250f6f492c15eea10ef5a1f5b. 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/QZMZ92524727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345fad0f5952f2791ad3ad79bd801932f00c9a45539bfd7a4ad486e14ef2733. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMZ92524776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5e78c9fa18ba40ae363ec1d809d3829512ad2c25ceb378262ed4df7e18fbf7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:50Z), 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/QZMZ92524772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd79e12b65840739db5e10f3d206751c191e1abf10e60e28773c624636b46c0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:29:48Z), 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/QZMZ92524704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fad64c6ddce4cd523045c99d83489e4db42e74124f730400d1b8f374a5e2fdd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:34Z), 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/QZMZ92524728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb032a4681892c03fb9a7aa830ba0f2c55f6ee96d5ffc58542642660697625d3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMZ92524703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42c89bb0b66a048117a2f3eda3b13aece55c8323f8ab6302d18b43d94121f6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZMZ92524726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa2a75d86f796e3187a8cf46c1b35a504806f38094975c4ec0f06beba96d5db. 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/QZNJY2569299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f9f26e225ec3d974d9552e7bf5ffeb35a7b6f4be2d35f6ac591672f1a2168. 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/QZNJY2578039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d6b5a9fa031b1798138e43e421c8df89624019cb5a67b1e9270fb72e82a19. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJY2578673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d96f99a60f2e9b4ad98cecd84994c37e0d378e058c5d063c9bd3abce5b480b. 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/QZNJY2578038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fd42d5a9d7055063edd8dea86b1dcd3da7b7592ac40a39503f6ac3983d95d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:35:05Z), 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/QZNJY2571484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025d191b3703abbf824f4122c54cab647903824da00d2182313f8c4785ab8136. 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/QZNJY2570148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a25a4ab2cd042c0814de57cbafb67defd50f5367725ca595d9bc64bc8bc5d7b. 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/QZNJY2578211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e19f9fd1808c41ae3f82c29d52caeba2e4ae8550bc57b68a721e9f60bf0882e. 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/QZNJY2569423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f6d2aa7f2d4c6f5b0ef513fc9ef19daa6a2ad5b578b8d341f32c7e06d937b7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:25Z), 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/QZNJY2578212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76969ac417852c9e3198bcd3702b10baee783927b63c4e8521bc63ca3466e35d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZNJY2571481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc427619e786ff24593cf8418d673840f3d46b1a53a728696c2024823b9a1b6d5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:16Z), 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/QZNJY2571478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159d4851b0c0d9bdfe701478ec4d5a023dd73e03d6aef375c576ee6b2a726c14. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJY2578213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d28cff5fa7f0b0aecce578d07436b9235bd42e6ac873da597f42d85e830903a. 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/QZNJY2571045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed528dddf6feef9f45d961a22d833a1f202cfa72915a858700d1c27045126b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2571477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f7cffffd1bd2d90ff811d2f22e41b15dd508838914833de76dac900c69dac2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:52Z), 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/QZNJY2566497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12eb9597cee36b1258427a9a7ccd47ee5ab4580525c61ff0d04253d342c8ff. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNJY2566490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b21c61fbe2618b2eeb38d31ab8c7d3e7901d7e2d13e853fb438b89bd8a2f442. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNJY2570894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb190999607caa576e5b1dbbc49ff160f5e57e149dc568a7d0e7abfe790b2062. 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/QZNJY2578214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1899a788310ae1c7cfed9291efeaadfe31dfebb4d873bb284a2f1430fcf6ac48. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNJY2578693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63cdbe3d161b08bec5af3e865ac5cdca57aece17cea275a933a5e6295c9cc12. 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/QZNJY2566493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fd67b5e03ff3063c18e6bc517c6b447a38a559643b77d9e847699d0589619e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJY2569538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e55884ee0a68b17740da3abfc9f0bd15378516326171ad448a5c406f40e4e2a. 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/QZNJY2570153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adcbec8de781fabf6546f8b6c20ae405968798548a3b7a2e196c2eac15a4aef. 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/QZNJY2570826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569f1956c843a22e30a6496f9167b9fded14f94a39a001e2cd856013f6316b5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:04Z), 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/QZNJY2569540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71a23092151535eaa1fb2882c710d598ec7c14a31894a351b5fe8d303c98d4f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJY2571475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7af4df7e3f0320dc8028f1bd908ef62820fa37d3daefed38694168ef334a8c1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJY2570820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2c21f8661d309bde1312e291173015923fd7620aeefcf1380f01a374530e06. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2578690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912d82cd8d7f2cf3f04a86e526680755dc228606d8cf1f6b8b0acd0544c8fd1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZNJY2578677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca22923d1a349371e68db417e55ec12f2f3f2cbb79763bec3e915a156c349ae. 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/QZNJY2578674.