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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a2a734a8a6974314fdf75e2d4deb8ed1ea5eb1a54725a90b7f49e6a9a4f08. 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/caf43026-c9ef-4428-b724-0bb6a97414e0.json and https://artists.proofprofile.net/proofs/artist/caf43026-c9ef-4428-b724-0bb6a97414e0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71b5cb51cb4e95ecea6b0fd3e6a2e175eedcf43f108c16e6880013fb53503c. 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/GBMYF2200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75410c0e1495302efefb1a47e76d7a045acd6ac1e61024e508e17b449def25b5. 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/GBMYF2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d88f66b6fcf0e9a791345f86259eb14f32d71b44a353d1725cb8ee0adc6692. 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/GBMYF2200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc4f7a6e287e30c9c93e7a0c19ac38452ceff77cdf1ceb8f93d9ffdfd4d2a0d. 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/GBMYF2200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9b8f4dde121481069c58c36d6d3ae8683e6b977d203c78d766a3ca9d5f49e2. 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/GBMYF2200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9534ac4f0c21b14db91cc9263070d51e9705d1b48f71542896fff39cce07ae5. 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/GBMYF2200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7668acc0f187e0213b72f3af79c54f2289af5ca0d46feadf921b37451474ff86. 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/GBMYF2200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a200e8d6004938890846a9389cdca851e3b4684d415c857b32eba1a738ab8ea. 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/GBMYF2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62488a440a475bf946837ea6651e6cdc94319ddcc76e0d0dfa5c67f428c6ed96. 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/GBMYF2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec8780dd2d3ce059f24c4aba5e05417a6d6d9795c3cbea638a28e8369bb97a5. 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/GBMYF2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d5f146d9f75c5276dc3d553ee508fc73fc0a287e739af6b1ad0b0bdc92476b. 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/GBMYF2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f63913a178156f4386f8f024579508338349b7fb06c942eb5886a54d74ecef. 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/GBMYF2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1c273726cef8e0cff0c0f88d51bbe5842381b1ba5621ef6d2ba1368c11198f. 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/GBMYF2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c869fb42f8b9cefd0c3160d571c7d5df03a3f8a6d1c5adc686743fb5121c119. 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/GBMYF2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8a11ae61167471daa18dc405641e8bcf26055c9a20cdb98a598f588f88778. 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/GBMYF2200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75410c0e1495302efefb1a47e76d7a045acd6ac1e61024e508e17b449def25b5. 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/GBMYF2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0c5b844ce63fabf3f3074d96b7cb5e614d6182e4021faa4123afb45197dde5. 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/QM24S2105374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa464e1091be51f9e93ea9418487d608d3ee324bf8e23d0e63287eb49354196f5. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZQQE2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69feb46072d2717709c8e99166657e900116ad3345177ac291c1b96034ab65db. 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/QZQQE2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d222e8a099aef654636d10d69bc3696c656402d3dd6763d92bb4e576400d506. 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/QZQQE2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce7d2909e1393d38436a30dc98d6375373e414d64e32c66ca2016502039fad2. 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/QZQQE2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee516c56b2f97708dc9297f920b92ceabaf8d30d638c061478c08f97a99c719a. 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/QZQQE2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023818bbf75236cb03f4ab328d63c1dda9f50d2d6ed9e361d6d24008c2379d52. 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/QZQQE2100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870239b4f4f25ff902f982bb4d65a26a378745a7482a71a2485a7b2004bbca11. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZQQE2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46f66e4abcd5dca3d3d0ff34dc77bf8058fa3e5504e2657202cc387e7103cd. 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/QZQQE2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07984cfcd5faab768b87ae6ef4fecab48a0bdd52958ebf0e1c24d60c8896258e. 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/GBCFB2100736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72c70c45a42f3ce83de1ee7986eb31a0415a0b7c92653f595c1f07132bebb63. 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/QZFZ32371767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464d8997c8618d5fcf68c8ea6d10203f732c7af9df3d16bbe107ef879317d82e. 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/QZFZ32371768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3d13ea2e28a4a561c957e3cc30f77f90e05dcc09ae71021e0e0b5df9696a69. 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/QZFZ32371769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3528b94a95b665910a2c3e258392ac152c0d3d53b381bffcdd80f0a7ec0eeb64. 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/QZFZ32371771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c8bfec61406d6349f98258febe18ed6cbde9cecd2e08411215fe8ad7c99881. 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/QZFZ32371772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355aa8caa3423b57af93c1df26a5ebf9e0792abaab3e35f821534c9996efc887. 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/QZLBC2200590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811af07e48ead69c967e6211950267f0671adc4c63313795b586104a9f553b6e. 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/QM84B2367004.
The Chronicles of a Caterpillar: The Egg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1792abfcf98774c42c01e5c6db213fae975a9c1f3f219282137d6164d20774ce. 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/FR59R2194922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47056de6223773708de967e31d5b7bad24522d885d1f1cf7b86619011619dfc. 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/US25X2200929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8e7348f333113f87b39e4a2b4836551fc869b058ec39dfb4e6b8ec77cfe8ca. 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/GBKPL2090357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d5cf6bedd63836f60220bb75c046be4e8db4905340e0e08ccac59c8200bc9e. 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/QM4TX2432968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fccdd3500d32574a9590e7ece7643b13fbf45b5e7db7ae0090fd261d53521. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM4TX2432969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f07e00aa7930347c5a9ac777c3870ba59eb0c350612f43d1ec6b1dac93997. 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/QM4TX2432970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca5d84d22477b0cb53ac0d7a8d4737d2513c90902b1bc3f12084a4c69fd8760. 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/QM4TX2432974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c621adf85d0f06e69357455637886b3413dcfc937b29fbaa1c50ad1f4a83ba. 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/QM4TX2432975.