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 0x76aef173210958d80af9f66f8e23c229d0f22059130d623c11ed5acdcb6f3c68. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8b2afb3-ae55-4746-888c-0a976d93d3d3.json and https://artists.proofprofile.net/proofs/artist/a8b2afb3-ae55-4746-888c-0a976d93d3d3.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 0xddabae9a2044821d29b3b530d40325400a5c6dc254c3de8a4835347b66500067. 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/DEZL42300904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcf348d59e1286c580ae9ce97de7a4305c56fcfa519702dc17f216cf4c4ffe6. 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/DEZL42202686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfdba2b9a368b16970c7f56c4358c1bd627358257d9e71903ea23833629ac1d. 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/DEZL42202688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d7341e582343ddcd8173c52070f501733f73f056de147afe13a0e0980c3b6e. 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/DEZL42202691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb7994864d8bc1a28def1fd9edba5d174ef082169613fbb198ff4ce062654e. 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/DEZL42202694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f1c33a4e302adb4689db6e28f27dde1c735b232cbf1c2d0bba4482a326044f. 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/DEZL42202695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de81a1a5206f9439ff5e9b3e8839a64148ef799bcf5ce2213930c2a6166dc44. 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/DEZL42202697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd52fa8b1f0a220a5a6dc2e6a7ee6bbddd7ca3dc5d63d0e627b477f728a7b91. 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/DEZL42202698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0d7d8f6e4e780905335ccb53672b66b06107bf35017b8bbb845ecc571aa0ca. 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/NLRD52014200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567f5629153989574c8fe9b46b8162e14b8b89c1362c34ef3a1137a5d8f8c19a. 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/NLRD52014194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1410dfe301034934f8396fefaa35c404f78ee7ec838359adfd296f8e9b5fcd. 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/NLRD52014196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe348a59271c968292c640d1b495c9a1d36ae85ca302ffcc23b7d915d467de8b. 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/NLRD52014193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e4f7b63c1ddbcbac920252110831fca6924102cce56d3b639dd36ad90f14a. 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/NLRD52014198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e238f07b14eb67a418fd99458a327a9897c0aa2f5ce9b213a5bab07e842d4b. 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/NLRD52014199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ad483868bd36f9657f53067fa3dada1125d025aff8ce1efd02c320eb7da94f. 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/NLRD52014205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ba9f5bd8e647aa1aeb775f4c2c822604ea05271feb046266c49a5021a2399. 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/NLRD52014208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fed9e55e91aabac5df91c33222024ff272c3959eaa05cbf47c1397fb3666278. 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/NLRD52014202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1c35f1c3652aa6c719b2a18154d5bdc99a18fa4cedc1cdc3a7e32514fda0c. 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/NLRD52014203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ac8a01c4a2c9d35a9aa1a283de1ca93058239ac72c3d67752c93669b591180. 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/NLRD52014204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6080c0c7e94ebdb57585609b5b3d706760cfd3c95126d05c84f13f3296661f4c. 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/QZWFN2446019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567a9e3ba2ad26796d2afe06b20a9047c39edc698af0e37a110999d4c349cf76. 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/QZWFE2479045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559700daef13cee73a1c93357226aa21d53a7c77083afaefe15b7e4954da5e21. 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/QZTAY2417235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd23dde2ef03c108c573b643cfb62d82b4f64e3ee12529234002c4bdce4c4731. 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/QZRP52458368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ef3c41e36e855d58f6ad02e029cf36665724bcfe416b7f9ae9c308c407b8b. 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/QZRP42403199.