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 0x5b23bf11aeaf2d1cb3988cadd76ac5bfce4c50455a8a000aced5f95cfe1cce72. 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/136b3ffe-0b53-4554-bf6e-fd96522a0893.json and https://artists.proofprofile.net/proofs/artist/136b3ffe-0b53-4554-bf6e-fd96522a0893.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 0x6a038a78219c456023edae46d9c855b27cad3c7056a4c8bd4e30d4879af4eec9. 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/QZK6H2357710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c7ee72e7c02a1f10ef97c4c0e50c07c9d1491079fe4e9f97f52c30571942db. 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/QZDA72220408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bad99e45258a14eacb09bbca69673e8fb9fe457e6f024276799a2cb5634d49. 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/FIBAR2200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599abd7be92d2d5925fb43a21e69368a2c93f93756ba15849364f35bbd4ec2d2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZDA72220399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5246102e7866493ac70e037209568eb20de9e88e3bfe0d52cb1da12c6da3e9d9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZDA72220409.
SUCKA SHIT (feat. Leis, kewin, beebi, villemdrillem & pluuto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15208acdd47b6d3f170facea1ec19020c44c51f534bd45cd797cd7823bda160a. 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/FIBAR2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28a91c3e3410054f775f5c56faac706f84f4ec408526619f3b7f95a24f3d87. 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/QZTB22255211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2576e954a28c27af735b2089614b353c9434b1a64361722bb960572eb77184e. 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/QZTB22255213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887b0dd52e1d2a26aad9bf095e8d71f0dc9ba8dce0087a8071214d6ec2e6a22. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTAT2296783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49053fbf5a9cfd462b27ae6fe93b4457336e8ec6b9580940187a287596174cca. 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/QZTB22255215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1750ac7adaa582b195cecad17fcb72736b8bb08b94cc327bed92fb4538b8cdf. 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/QZTB22255220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1e8faf6ff67c88e73aa79e2c2f9d1f272c689b2505b33f6032a0f599f8160. 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/QZTB22255225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae618f507567481aa7cf12fcea3b03db2de88e0af7f7a5b1b214e532664bc3b9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZTB22255226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248af81926fd5cc9b76d1bb043c840b1af7f28478f01f804b12d2a73417599a5. 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/QZPLR2311346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156182b8192e389b31a071dbdf93db40e2569ae078b1d242610b8825de6c047e. 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/QZTAT2296212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c1654c3bdbae8d134b13469b8bfab425c6ab75b263aacda3a46a7bf72538b3. 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/QZK6F2254947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a4c1ff836998f7bc47a85333fe45dd9d087a8aef9cff3de14b80682a409207. 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/QZTBA2363223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3868b29eaceac13b49550877b6ca01144ee8a34f40cd2a287941956314211778. 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/QZTBA2363224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0717b4a6b1670d87443e417089528b00307c15fdc7cca117e4d61e91649a44f9. 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/QZTBA2363225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b0a0ca5c9f6266696a97de5d2a730efc39b371421cddfbf0362a9b5a5ab6b0. 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/QZTBA2363226.