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 0x5b602f334998d170cd71fb2c957b598cef447c76ba7a8e77a2630d14be3ef520. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c87a2e5e-a53d-468c-bf60-2e9f328eacbd.json and https://artists.proofprofile.net/proofs/artist/c87a2e5e-a53d-468c-bf60-2e9f328eacbd.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 0xf51b212ab021651a17aff5d20de5f3de32e1a716a712f7bf7b6481cec0ba4d81. 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/DEOV42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cedae8725b37f8a6ee862efc21b5dee2a671675b750951fdcbb9a70e9d9a35. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEOV42100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51b212ab021651a17aff5d20de5f3de32e1a716a712f7bf7b6481cec0ba4d81. 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/DEOV42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3253879d1d312b3099204f03ea7fc20a1ad74ba706910936ca685fd798ad878b. 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/DEOV42100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c795496c33dd9dd8a482d77fa9de87077ab332e6642c86935cc9ec9bf9c67. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEOV42100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a1c86747a68f0f81754b737803198f055dc1ba18f689db8df4aec9bda02b79. 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/DEOV42100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9f5e9df6ec46e2efa1635f1a8fa83ec3c6051fe664143e0fd6120c4eac67cd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEOV42100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7848839f7bafee129f87965d07dc09d48a02a9339ecc870ec804d7731c927a70. 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/DEOV42100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccefe22433e34a5e3c9d367ff5e9c917b7101a8ad4888ae6409aad7425b8bbb4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEOV42100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4a6b7a25b39baae71481cc86ef204133f957b216bdb5766292550bf1a84861. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEOV42100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaefc14666a4fa90fcbef051b98ba37309582abd90961c5421a9838332db89e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEOV42100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93160f8a6db5070f84c7f45bc2d3e26cfa83a0563567eb0da0bae9c2e936cd08. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEOV42100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36101cb3a9234b4ac10a24ee1b31f8de74d54ec8e55ab7d4ea3b5bd264181423. 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/DEOV42100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e3e5a32db2e46831e8ae592d91175c0f11114d4c9d77f39f3fca9cec6b2b76. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEOV41700996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51f9144ae2e41ebe210cef9c70fccc616107737e29168a2d1a06ba7f287865. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEOV41700997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde18387fd5d54f4cb5ba4e7189930ee66c002c455c86736e11f8fd8a320d3ab1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEOV41700998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47a123b593ae1b5c7ca604c5dc746b191c4494be9119131014636f843a10ea5. 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/DEOV41700999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478306a3e84e16fff1dbbcd579cb59f27d52bb64e5a969ca56aa061edd2e45b2. 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/DEOV41701000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb62ec9c32c7e218b689c4f0d3e40480924e03d62483776f4c7527ea08762ed2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEOV41701001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb6d6024752a7bd912484b5d4cc35cdfa48cf678f4b0607e0cf2eebea780556. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEOV41701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b5cd63396b48472085ef2c5642e5812db7d33d88c989cd9fccb432e39b12e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEOV41701003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc842ed6d1ab9b673181f14514d38dc0a08e55efdc6007b9b0c0488f3ecbce42a. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEOV41701004.
Blazing Fires and Helicopters on the Frontpage of the Newspaper. There's a War Going on and I'm Marching in Heavy Boots
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d06f2f8f0a71e8c9bdca449e4141808f36c25800552af4e5e2fc34ebec5079. 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/SE3OH1623024.
I Got Worried... I Was so Freaking Scared of That Window, You Know
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a85341a1891aced1ed19a925ecdfe3197789dc28c56c15aa8427cb0489ab495. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/SE3OH1623027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263b0a4eb05bbb7e8e924ab91444b7a8e9e35faf091db9cfc97d44219d57aa82. 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/SE3OH1623059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bdfe24e7692f860f981117d95ccf27cf429aebc3533688185286e6de75fa01. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SE3OH1623557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3990052741849e093e3a549b192691ef1d53682ac7b9df855099d5cb3f351895. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SE3OH1623554.
I Keep My Eyes on the Ground, Afraid of Meeting Someone I Know
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab858884f1740a1bdfc3cb944d95c0803bddd739d31b56825919c329813c8c2. 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/SE3OH1623022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6891687404155cdf7b7adc212ef5dfbe965698507ace7323a2f19c8f26736. 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/SE3OH1623025.
They Try to Cheer Me up by Saying I Did Once Live a Functioning Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602025f1d4168ee58551de5e5281ce75a1b46fe98544b6587cdd1d2afa1d538d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SE3OH1623062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a904333dedb0cfbf70cbd1041fae7f66c346aa329936086ff8cd1a10c90dc17. 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/QM4TX1814515.
S (Lesra) - What Would You Have Done If This Never Happened?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b321c00e85facb2c0c9191492734df372a02cefeaaad7f8bfbcd2bb60795f75. 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/QM4TX1814518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84062f02f8ab6abfd7fb7e98de0d4a3f9e914c4515187abb8b70d18ab12e87dd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR6V80037320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eb91af61b07c389bade40e0f06a1c600106e645d48cbe0bd9f4532ba5b9eb7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR6V80037325.