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 0xa812c5f79eb3d14d168f623aff0d04f6a4a1e44519654f0b0c9402ab75c729b0. 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/38beb091-c808-4b9f-885f-20f63ccf1a3f.json and https://artists.proofprofile.net/proofs/artist/38beb091-c808-4b9f-885f-20f63ccf1a3f.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 0xf22163bdba224f238171e5149ad9cb26665b015d21d7a94eb03b98bf8ff5ae94. 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/QZTAS2322253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97a1b3522ed4d81de38c0a73af2598054d1241e45eab8d5af47279d3fc0015. 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/QZMEQ2397702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9ef0e91d0888982f702b70d7f8a58e860c5e8d39417231df78b61c48837496. 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/QZHN42325009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40f2085c1fee27408f568a75931e0129efd8ec298254d3ebe4f71102afc714b. 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/QZNWZ2359937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1c8e231512cbeff64d420b41871d9c9bbf98f7ccfbd23be995573197d2fb51. 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/QZTB62265287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09e5e95622add5c16eb34bf85c6ef24a2f74063c0e00cefc79debdc5c12a2d6. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZTB52352662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1494b990baf8f5bd5a4c0af6c7d252dfeeae539809a9ab4af8df62cfddbb81. 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/QZNWQ2388252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5988ee568ea177fd4ff42f4b3ba86f24177b451e46a3d66a66c0f09e68a5bedc. 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/QZK6M2408903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7cc5beebdf160b8613b44baeb5b64a4c1e1e30ce4d5130a053946f30434796. 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/QZFYY2357752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8aaa1f2a4f20eb5c1a7b314bcff6f684a2d8abdabc9f8171f408f2433bf8c3. 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/QZK6L2275764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c161886a858eb9b17925aebd221f56b58383b844f73b0f0bb63f0422919fb9. 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/QZK6L2275765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b80985f337c97a034aff2a387f8c7bfc98c2e4901b87e8e8ac807e4c202273. 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/QZK6L2275766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb45bf6f6a748f4ef6837e747d2333ec0c8ee98f038c9668bfe6b0032478d969. 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/QZTBB2309241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b54b518b074d05a1fc7b6690ff6c73f933bd8b7f621bd107ddff38eba6b727. 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/QZES72344976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf32a4b4628044b6242f7f1161c218726fb59938e1b27558ed47498291b454b1. 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/QZES82438125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae344c3884c729ebf84944fc4e36f107dddbcb5533848c577d5b415bc5ca02. 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/QZTBC2385388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588878f3ce2fe14c9409360ce070aa9730aef675138770476855c6a2364a97e9. 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/QZK6J2497134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d420fc26349349c48bd63e1739b8be23ae6153244464482c612cea6d221d0d. 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/QZWFK2334634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f9aa816b72d4bbd5e70b938a080bdc0f71425569d71e1799924eef86cc22f9. 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/QZES72411723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d7a137fc3704a42126aa8a2e683db401fad0d731b3b2edd573548af77deebc. 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/QZWFK2380683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0049aa9633b9d0326d6209e5be9325a0ce7a60501636d8f403c97886c19044. 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/QZK6L2351803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb52227ee7b4116ff1dae93ca938f7400a24449387cf834c9fb70184e63124. 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/QZK6J2340213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503fa17b29d6e0ec526d517de2f57e5edb0e3a163d0a862ba604de32a411cb2e. 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/QZTAU2217771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc566fd5c28f2058090a69e5e8efbb6ef054411f945c2a462fcb09f8714f483d. 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/QZNWV2284725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0917f5d036a51f3a02ae7b80f68c1b519babfe712ee6cf8cfabf40c657d50. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZPLR2307986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a4f33904b99d36783dc02a9e6b259a85a76fbc519417af21a3b66e99e49c73. 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/QZDA62426201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22aa0f55c6aedcf01208b61da013e6e8952c76e9a5bb5e65345d627669148e08. 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/QZFYY2433253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95c3a18f9c09bcf3590a83e26620de1efe4bce6833809b7fab37ca0938cc6a4. 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/QZHN92330760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd0453b9ebddccc5478032444eb3a6b7d15388996cfb7be97f05098fae937b. 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/QZFZ72377602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5748d0d2a0824f0dd071cc54d64f32f111745a5beaf6e32c41f2a08e0479e5. 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/QZPLS2486194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68817a2335ff64fe2cb993425b46ee733b98e8035cd9c03171252e5ace4a847. 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/QZMEP2412553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeb7561e5647f4809163ecd2b9f8d9764b2e859b0f4c147882054b71fd60b17. 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/QZFZ42587981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd241324bbcb2e18aa13d01af4c5be00b376c97364e32e093771e032354fe0aa6. 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/QZTBF2490046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c5cccba7a79a4578767c090c5970cff81ceeffb41e24249466d90340e5387. 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/QZHN42460559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb4e6e56d1dad5e415d65a0bd8a96982d99336d50a840665ce9daeeea4d3ab. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:17:17Z), 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/QZWFF2406546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf86048a87e616b45c929b342aa14188da65238ae9cb7a50271541285265b8. 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/QZTB92445662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17914e8fbf99ec3134bebe5ee8770caa5ddf05002ac0c8b84b3a2088007f8540. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZPLR2414639.