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 0x5b1ade55012494869e7a214e49f888eef4af7f19fa13951cd86ca9c3961c1315. 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/68e5a358-e5b9-4c20-b2d4-433aa41f8fc8.json and https://artists.proofprofile.net/proofs/artist/68e5a358-e5b9-4c20-b2d4-433aa41f8fc8.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 0x1d0d4d9e2885743f0f0a8fc9861c7ed75a28a3b4430e3a03772efe1d20afb5d6. 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/SE6TI2346541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5263db8a86b56b6f6cece88a15e17ad35e78109390335f9f6cbb4a6b4aab70a5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6SA2336189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe243865a904363255a48bbb85ed62b3386f9d0838c659c07fc202315cc570683. 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/SE6SA2306454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe947d0655bbb06c3cc994e870bad91e6938af516a7a92e248552b7ae5300b024. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:51Z), 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/SE6TI2391353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeec891c1aca969ccfaf421a0e7a178c419f28e80cd9073be51982e52f78572. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6TI2393998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8cd602fc1eaa37090e766a590a13f25643da8a46930250a7145f3b882937c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6SA2300643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd2573ff7673d87e3683952258af6f0267af91338e1d72aedd4e569a04b999. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SE6SA2386926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dc18f351c4eee8300ef48a6d8390a1da5c5493d96e329381a017cb4eb2eea2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6TI2304480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ad1e0de75f8029c5ce438dd3c5233dd0df5d86212cb5df9ed837c0e56734db. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SE6TI2367517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1c093bd16a8e3a40a58da8ab8908b1bba9e7c95cf3f1f56668d135f0fdf25a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6SA2344567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee12edf6e1b88e619b618622f2428104359bc8eeaeb5a436507b422fbc90e864. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:50Z), 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/SE6TI2333944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3ab486436a24d24bf6331f10272faf0c882c5f51f224740f47caeb688c6ba8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SE6XW2307073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a0e01fae4c7bc25784ee9ba2a92e6559f5a8c7bac09f93fe24bb46729fa01. 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/SE6TI2318390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb885c653c29a6d1a5c5f27755543f3bbd13f268bee35543476bb87ab4afe1ac. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SE6XY2330965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa825536a950f374cfdad109c846331d0d791a4cd31debb679202ffdb4b4b304b. 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/SE6SA2352826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e1586ef27e0f300f7b0e8045d9bc05b1dffdf81517a1df90d09ada3e40bf9b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6XW2304347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d587c9d8e70730fde6ae3a78bd7e686876816fcc4a117ffd45ee1fd100b5fb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE6XW2333352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528b73f5143c601f4cc5134377b1a714d0c961f006cd0b06cda2f03b9cc4127. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/SE6TI2382652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51780de1bc8bdc151f598a752441857d7aaa4d702eee4b8e5d24fbaa42874b41. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6SA2326919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457347a9ebb7d178e818312887adb21b9dd41d5d80978f3c2fe0803ef4571c1c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE6TI2317423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fcd0b18ede722def13b8dfe77d3110da0d2007479d4c1ca3aa7633b61e36cf. 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/SE6TI2345452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fab5d33240b34455a62f3fda7339f8c5b0b0ae59b83ffb2cb81666e5c746760. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE6SA2312018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b1d554477d435e80e5e7ebe947c5da8ed4dfa7e585857d533835d600c14733. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6SA2394834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18324d046a951ffc1304198c500aab1fd21331e625f7d9af0cefddfcf087dfb5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6QE2412851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf1212aeae428ca4f7900d593fc587e170c6649f2fd12a989dcfc6a3763f11e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE6QE2412852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876304311ac12cf6edae2f03137e18403cabe9f0828b9e3f70ef090879c7486. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:40Z), 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/SE6HN2409621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd3ea2d0509edb8de522fe8764fdd561cfc363eac5d34ab17fc0cab686b3547. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6HN2409620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30aaae3d3c78ead953e3c2fa6a97c3d6f3acd0a2dc8b9f9cbc0c8638c477747. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:32Z), 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/SE6HN2415837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb21d7ca7dcb403a412d4b13353e5cde155c4d7ce56b4e2e9f1eabd5dd24839. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:16:16Z), 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/SE6HN2415838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876304311ac12cf6edae2f03137e18403cabe9f0828b9e3f70ef090879c7486. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE6HN2409621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704211d945bca68f310e86b9fcafe426d8a7c1f44517144fc40d60bf49901e2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6SA2420876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee05adc60fbc2a9d4c8ad8293f92944d6e4d748d3f1e32aeb6db0f33f2a2067. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SE6SA2420860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc107141fae033467628d2afbfa7521b4dca1e600573c941c426e65c5255b78f9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE6SA2420886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3124d4d427c32ce726629ddcfa9f0d4248cc02d9a7af4e54bd46c1541db23a3d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:08:28Z), 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/SE6SA2420902.