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 0xae1633a2853526cce8baaacb6ff2fe72820cb3234566bbde9558c7b9cb3effb8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36bd164e-5856-48c3-80fc-9d0b9ea4a7c8.json and https://artists.proofprofile.net/proofs/artist/36bd164e-5856-48c3-80fc-9d0b9ea4a7c8.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 0xb89fdc30b76024d31056ee16989ab3788f5dfb90dc061b2e2237890349ee9e05. 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/INC622216892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3862da8e4163ce3cdfffdc2ca45f675c7b96e0c933f2b9e592804fdf850f11d. 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/INC622216266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5a66fdd97c7065ef790155cec8d40299147ad1fcfa7c8a86d2c0f45b3a915. 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/INC622215561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eec0c018a29a7fa0e35206054208afa808237b69a3ad11a03c9f407ced5c27. 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/INC622214804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5741897b819cdfd103a4cc80ea7429de65e8ff34ec4e64ca0daebb39a1b0d0. 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/INC622214347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e295334571704a120fdc943d3b9c63ddd0ba22b50151b938aafb7ac39e1188. 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/INC622211707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e1a4c1fc17851960b81645a3561b6c5f2c50a663a65bef19b9db4031d9af10. 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/INC622211706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66ad3a6cc4460e7c3fbbcb2a831e1fa0b5b8362f215a4e398ab6d804d132b96. 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/INC622211708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13273d5e7df39dc88b0d6fb1f1b44a1663b96ef363e89d5b9f6babaf816873f. 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/INC622211705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e49001441fe0fc8e72fdb0cc888c4013ade902bb611514d84b2c12eac714f0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INC622211110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc767b65d9519b647cc6eacc4e887687f6f54900057b4e3b368966421a658ee61. 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/DGA092374754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed9ff17ed893d294ba5f5200ef7e9f95c3d4e2682a2ef297288fddf93516ed. 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/DGA092368771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0e498ec794f0fe121ef131fc6c2c819dd2d8639d40221d6603a9599ec348d1. 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/INC622301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2749703d5645313db6a4200163ed52d6207c102072c5c0379d3154ba77b91f. 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/INJ221906686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04de78822c8106b4d0a6146ff253533141028256f9e3cf333939ec739207423. 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/INC622300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce309de0f0da2cc878d2558479517660aa10839793809f23053f4e3178c40e0e. 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/INC622300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd94eb51e7a0a145158bf78f040579d4578fbc449c01b7c5501a262f63b9ad15. 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/INC622300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33efe89d867931e6ed92c58f8c593709ce3d34b2450c35a2208e163812ea8560. 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/INC622300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e270789874297bd366d2581443e49dc0032135af041802b9b3e10e956c3434. 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/INM432201026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635732f647ef1b8c50255a80cee41e54bc5f14e44d9da7d26fdd6ebefa2e269a. 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/IND712214773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd6f8c4f03f8ae9855e0dae6c10363edd3b5efdeade4a8ee39fd13cd1fef843. 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/FRX762201856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2419e78f7de1af937609cb1ea33fd829f04bff7c36b20b66b4ec7f473a1938. 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/IND712213885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9842a2756f2122c9499943b1c40d939331882a2a127da229b52b29451f801e. 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/USA2P2235842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f0e4f4b963e5f2ddc0c5073cdfb19b18411c92b0afee7bff7f80ecbab1784d. 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/INJ221906104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69d6d788dfc04746ec1a07b63592a88bf8cdf17b4b0d909eda3efbc3034bc2. 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/INB942200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7ad63c0135e89d8f074881f12a8c484dbb3027bfef6b5a516c81010eb13ad. 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/IND712111303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961fbbc2d140e43603a5da014c58a989916bd162e37e4249ff6825616c6e2d02. 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/INJ221905940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2835364093ffb3c8df92c72a7e23ac54d1190fcac45c4d6096f8d8051967ff50. 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/INB942100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d58e7da06b27988429b3a62e66e1813909e1d1103366230362e9701bcb3e01. 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/INB942100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c5dab59bd3178be6874b91e07be8c3e544fdb9b35610527e162c2b20978beb. 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/GBMA22048122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3708ed23de45d2c3e481517b32812c6fc300db8187a9420473fa938e6c0af8. 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/INM432300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07f993fae3841f048da421b436fa5dd6a23dffc4f58df5ce26bc155e4681b0a. 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/INM432300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da79cfdcef487b3be64598a9750c00044e9f1dca6fa535b251adfb04e194630. 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/INM432300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acc08d28d5fd83ed758e20df29d2bfe1bfc85f20ec55d6c48bcead413099166. 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/INM432300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c3fc9e83b3c2043e7d2ef90e00d9d4da9849978feb0978b9cff263f2a178df. 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/INM432300141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e86df71715f655c7f63a96f4bc7b9a2be039f58dc148438e735a4b4b51d72ba. 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/INM432300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0099ecc53bb543d8d5194c28642acbe20c04e6d025d9548168a684566142a7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INM432300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201bb659c0ecab9dfbac5ef098c8187021d48bf8a131458d911d6235d2233f8. 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/INM432300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16994ceb5deeebe9868ad819b75d0c3b3c89daf8c2af62556d4656dcb59b752e. 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/INJ221906010.