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 0xc90e40bf710313f989bc5251266b0713631b0cf5799721193af5bde347e90d1d. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1da1918c-bb82-4528-a1bc-7267d763df13.json and https://artists.proofprofile.net/proofs/artist/1da1918c-bb82-4528-a1bc-7267d763df13.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 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10335259c634cd9eccbcb85201284a654ff4b97e8f112ea69a0c3c9a6e499f. 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/LVA100800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218581c694f2d43d1caa306d9f6c54a8e60861db4bab001faaa58f35aaabbe38. 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/LVA100400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7551083b52e9e118c2a30767c66b0155405bda8bf53eb3cabbf023732d6913. 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/LVA100600225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd824edb57fde6d7a87f8ecc5d99377a53fb5bb7d56355d7bc0717b36bfcdb. 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/LVA030500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87586d13914686a280d812d98c3e3de39cab833af59db4ae11d256d2bfa2535e. 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/LVA100000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69a4c839ad9a6dfce470ba6a71246977be60a81f804a3f37f36708dd9a795fb. 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/LVA100400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0273ea2cb5ba15072f5b1e3e7490e2f9fddb2bfc9d6d381dc5434b5c0313c420. 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/LVA030700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f73b545a8ef7d091af97e7495aa575f7112ce0c5e3c25380477aecca8f3c81. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LVA100400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd02ebefe11fd01334cf711e96e0dc2e498ec0d44b92ab2cd5a6cba4b0a5c6. 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/LVA100200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3824d524d9fc79f592424360d17c305b9e008f04fda45a43a334c71b2f5ef02. 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/LVA030500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281435424e17e7bcab268b37810a93ec503ca073ed338f0a8bb53642eda62981. 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/USA371257727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89de9ef629b5d19dcb8e78892e4611b0be88a2f8b80169382546fa5bc96ff062. 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/USA371257728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa959f3d7d0e9d9a3e03748f184122c9ab3045dfb662b49114a3682926843b. 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/LVA100000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b24ccc2bf2bc8157fd8cc4a17e85ba8344622b766110b6ed1ca59f39f7b351. 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/LVA030500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9e23f3ac0b2a4f2ee93d2d42cd757a0ea282d1cec2e2b0101a1b8105054c27. 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/LVA100900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b4a8b3197f63edb8b5cf46277000db9efe3c1ad1062a64303aa2d7be3199ea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/LVA100900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f73b545a8ef7d091af97e7495aa575f7112ce0c5e3c25380477aecca8f3c81. 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/LVA100400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ee0c329ca9a710bea8c0e05ec6e1747d5570e753fd572fc273b42df5c6615a. 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/QMFMF1493369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e14fd330d6a35af2a477b659e04355db66c1b0725d3c1c3b72c4c6eeb71ebe. 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/GBKPL1413753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a55e6efaabf9824028c69709ae6dbf009cbd1f010729e184efdd9450992ed5. 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/LVA100900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754f414ef7827dcb2e6d867b9689cdf476eef26bd9f5b3b3caf95b7a86794215. 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/LVA100900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c97086fe085984e4e94797fcf35d157af0252886e8eba16f9772f4b2618ceb. 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/LVC811400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f04b845baea1a5c167dbea28a9d151b90e49a1c294099046e420600bd7bad2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/LVC811400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efa56f72e63504bb0ecfb9ef5397338e1aca5c46542a870601b90dd79a6563b. 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/SEPQA1200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba1efa8e55ef458d5b4fcd534be3db7547751b3fc34dd8c94d22a8ac27b0c34. 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/SEPQA1200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7719dfded27358df25a9aeda4b886fc235e6b38ed832c89e06eab2e7d55a68b. 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/SEPQA1200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3367fdd9b674e377ec21194360919ff1482d839df8fbc8c4559ef312ec3d28. 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/SEPQA1200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168594ae32ad842eb9aa48122c724f12995f23678439318cb743ebcf030958b4. 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/SEPQA1200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25e3fc24729c8e83d48877fdc84a4d2ec9f10d9a9c08802ee5aa329376c898. 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/SEPQA1200875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a4407cf8dd7a95ec8ce9fb6bd1109a4159cf4da5abf554da02ed7b2c9a351a. 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/SEPQA1200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda27e886c64d2622388f8e0410ded321e9815dc09437aa4fff9d7a27bc7f6a. 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/SEPQA1200877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7823687384498e255a3b7345dd2a5ebde79e8696b4a4df33ad82fea49eb579. 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/SEPQA1200879.