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 0xaea53e56dbd5e437c470f2fda43403d32221a220c116067dee841303eb90c9b6. 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/f978f4d2-888b-483f-8a54-4ee09fa6b6af.json and https://artists.proofprofile.net/proofs/artist/f978f4d2-888b-483f-8a54-4ee09fa6b6af.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 0x6153b0125172225670a9b84e89ab8b0ce140114c982430d33cd93fbec9e667e2. 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/NL4NL2215266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d5a078d07b4ced9cf907ce14991edd2c99e552b9f4203440fc7ffc2cf5e565. 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/NL4NL2169606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5158bab364e959e940c50c2b55dc0a17e487a967d627cc631a78c725e795e3f7. 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/CA5KR2366052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff1b2ec39e4aae7a363e3322a733242a226fdb0ff989ae09815923036df5e50. 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/USA2P1834815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052a1fd94f95fff15ed22bced2a6a49bd0071fe4f83b30a92b678ad3793b3f1. 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/TCABN1393940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c9f1790656e32aeac8a4c15c0e9ccb542c3d177b6b267eb5d098578ce9ce54. 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/CA5KR1928349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a8790eb49fcb46192995dccb2b5b5d70fee1ef63d88e0ed89d8d4b03a33214. 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/QZ8GX1701098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243711d1f9b609e5ab9713b9979f860597f1f61990644e9e2d885a022b92ea6b. 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/QZ8GX1701050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7374ea5ccf924eb449f4944956c7136b85330d9c35ff6e1a90bf1fbef6ad987. 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/QZ8GX1701081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca141c123494bb8637fc979397795aa9273e41b734d7764a912f3e0df71011. 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/QZ8GX1701100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03baeb3486940b215c54722daa0af49d12e9c20980193970a8e732eb5324ed83. 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/CA5KR2450354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2165c822b6596aadf21dd24fb88b53c52873b8356a3abcf0e896ec5fca325d. 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/CH7812372323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae5dde6d1b6d9766f0d331d9d2244a785961ce488d5af7365eb24664a8eee66. 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/CH7812372324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a5bd481622e7aec86470bc0ccf11b85fc3e0adb494efa4e3f433dc64087500. 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/QZTB52348443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d6cf0c50757f1dbd459d70eeacf2e52caa1e7377828249822a51e47293fcac. 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/CA6D21900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a71198e6f0c8c6443ddac1a1e2acec2252959626972627aa23a86ed2c4e78b. 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/CA6D21900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963315e4f6b6289035254165e7b5cee9dc17e7bdf1df3981a37888c8de4e523. 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/CA5KR1941874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd252800e2c8e5253c34c2b0cccb4b940edc1ee15b7be802444ac58267477d731. 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/CA6D21900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6711b5271279e147483663af1cae9e83f283a278fb9d99c6671317db2c80c. 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/CA5KR1925285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09349b7f07ee94dcc29fefc901c2692a42e075f55d655613bfcbd067f5729a11. 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/GB2LD1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633183d7d2d9743fcc3d45c7080ae99b8af22078f883e9fa007b62b2c80b7511. 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/SEUM71900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab9a3053bee2d6d41a0794c0c21cb48ae161609a6a177f1c5039bd65747b864. 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/GB2LD1800790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55880d14b8ffb816ef46e459e748446b7193b0cf6189801bf7cd4546870649af. 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/SEUM71800543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d081e7d9eafa6dc4e95642c111e63d17dfed5a7d1ce50d0b548fcf875b0c2b2. 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/SEUM71800544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fceececc9c08ec68037b699256cc54dd9eeaa50cba3afe63494f1786a919553. 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/NLS6R1855889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc76ffcd252639a5de322729288254fce5986f8cc7751bd439c93beaf3839510. 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/GB2LD1800661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb1cb3bd14290155dc9637ba5fa97eab0f70681206eb4106b0bd78ed3dd772c. 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/CA5KR1818344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe79283de4879698a4053767786e5ddeb11b06511b58acfca5df91b7f842cf5d. 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/NLCK41048817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da9e0af3d9f2e7712b75a159d5a343cceed42094a3db731226cacadd1cc14e5. 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/NLCK41048818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9b12aef71088c2b9b7f5eb99d48880ae78e03993af596a3d328997b6be914a. 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/GB2LD1800577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc26c6109e82eac9b3c65f15817eacbc29265c04c61459e8880001cd8685482c. 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/CA6D21700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49175e3b802bc60b6f30a83a10905f9ab7349b248927c447b061b9481814589d. 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/GB2LD0902603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808443923e59dbc4f79dc345c9e494a7a5722e8808aed95479d8ba39abfec982. 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/GB2LD2410361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097f884df54937ff98d65d9ef57ba07e97c220a5093ec3d077ec9cd0cc61f266. 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/GB2LD2410362.