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 0xa9f08166173d5e661ad02d8d9f2b35c1878c176fd965a9f11eee3dfe35265032. 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/a389ada3-6ceb-4e81-bd05-1ee5c70c4772.json and https://artists.proofprofile.net/proofs/artist/a389ada3-6ceb-4e81-bd05-1ee5c70c4772.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 0x73c06486c45f439dc7b2a9288f0796fa0dbdde57f099d45d318a3d2a03ffe6db. 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/DEOV41300464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d85916e6bf3601d033a385b0743538bdb6738d39c4ef0cce9cb998f31cb3609. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEOV41300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e543f008080aefa032f804d5d10adb4d23b0b92a3963b35013e6cd56d895592. 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/CAN112000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601122a6b383f4d55c72a3a6250e427a02cfb3aacda4cbaf75d8f0dd5adf6185. 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/CAN112100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5149eb8603dad364f42e2bfc7de0a77d2eabafcd7af64a3f5a60ad6a07499. 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/CAN112000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457d5b26acfe7f3fdb79b5ed0bac7793b7461e1d3127d949b6e4b58a44df0404. 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/CAN112000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201aee70ed2a51ba99dff9bf7eb235f9c49f67bf040f257b81638b9eae6206f. 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/CAN112100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f92389693b7c2541fc26bc02886d7efdc5a53db237be2d6601e6ee2bfe6dc4e. 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/CAN112100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aa3764e86b2f3d6c98501a860086019b2d2ec12a272fe43b3fa037d1d57fdc. 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/CAN112100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa60c436530d564be8a88130319aecec107ebc45682a498bbc3380b200f596c. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/CAN112100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f705a730ef3492b5f5635f045e087d5d735eb14389916894db8751aa7fd5e80. 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/CAN111500505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fbc1dc195954ca0e4c511e3ab8fb9e0dc06327e8bcf064031e878f4989e9ba. 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/CAN111500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40e3cc2c1dfd32f4abe4a518b7e590f32e795c5e7cbb2f03602d56c06a4ee3f. 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/CAN111500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc863ed6e4e6d652b7f3783ef6bfdc9077c1314df6c2c9306e95166917b3a70b. 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/CAN111500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bf5e7d2dbd42c504eda1ed38e8d2b69857d2dc2a00442c46fdeaaa2e34c946. 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/DEDQ51200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cbf4c42bf4eb164da32145d350c5e3bb41cb665e0e45a388eb040ace20462c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEDQ51200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b734196a7fa2b8fef82757e6aca69d692abcc403b538eb395bc5e868a8b960. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEDQ51200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dfe123f3b391c7d9de0b42b06853aba894789a383adbe59174c7fe7a7258f7. 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/DEG932203835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa7a916dbe271dbb34c695118de2143b037b36761e0e576f1a78b035c9281df. 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/CAN111700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586ef8c9752f4fdeff9292d9e62a7afa2ff5d08067d17d64abbba973240bdd58. 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/DEG932203839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f11663059df9b403d6fc5eebb8e07dfc004d8955e88f4ff1a8b50e42c1e2397. 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/DEG932203838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c60100561a96b9de8708beb58d6b9f570177f7033b09e0e884af5dfee5deb. 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/DEG932203837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7310ce9d083ffe5985f077e1a971a20fb41f6c31f43e68ed8fa1d80cc6adeb7d. 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/DEG932203836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dfe123f3b391c7d9de0b42b06853aba894789a383adbe59174c7fe7a7258f7. 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/DEG932203835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52775d9f9d02d4a29778ed0ff825e61dca60831c8e277020bef1e98ba0bdf695. 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/DEG932203834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f0e8884dfc08fbe8dbf5ee16723f06044952169f0ed7014d737d0a32921d77. 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/DEG932203833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae5ae521b8d4ee1ddd01182be6b94840c1e205126e06ac6a20958c0f5654bf8. 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/DEG932203832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac7540565fc6944c713a7f644e21eaef8c689dac2c98382a1eb7dde5923da8. 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/DEG932203831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900c6121153a7ff5500939ddee85c5b42459db9e4dbc8b9c073821cc485a09f. 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/DEG932203830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00792dc9f9ed9a922bbe12bded949e765784d0cefb466b240652062307fdea. 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/DEG932203829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b602c383c6d9b05a9867a39d62f4de02eb09b215ef3de51bd4359cf2e6d8d. 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/DEG932203828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e7798d03770c89940a2a9bc6bb1677cb1f953e7fa02e4ceac2b223cf5deff. 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/DEG932203827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beed29d069fb8024453a220ea185b40a76b1638d81a3b956a73afc10f7ea05c. 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/DEUM72116341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4364b15d0ad11c12951531f6bb0e0170a10f432ecf12f462714e2184e7c3efff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEUM72100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378b3d7dc6cbe5aaace84b913bef41d84bf490d9665ecb85883b3ea5e9de2ebf. 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/DEUM72311436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9f4161ed8e19ec5f5ed567dd5cfc7a342ea1c33a6f05cd59283ecf3e3040b. 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/DEUM72400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462f316a9e79d6754d20353366e5e1cb58c7a2fac82d9b42b41a8d594c7fc743. 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/DENP21100118.