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 0x7a3e8c8fd44aeb6c163ab27a18c86ffda3898087ebc892b88a8c51e74edd9135. 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/c54af80f-c6b3-4be1-a5b6-c6e744067225.json and https://artists.proofprofile.net/proofs/artist/c54af80f-c6b3-4be1-a5b6-c6e744067225.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 0x1c872a03843b3a11a0bb7aebd592456d7490d2bd724cfebe72f78798b962212f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812058518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2600a26f8e926eae4188d33f5ed35df0d55d5ef52f57383e4e2cff2d59a32c63. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH7811710320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa78f3e3ee53331ceed7ee686665bdcac4c2f0ee924c350750d7ec8eb57231. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH7811710322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d8f57627cb5f9d79f46ee9c512a54451ea33e3aeb1ef33caae67491ff73157. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CH7811710323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a103e280f80c03ca3fc87df5b2ed5c3ff34b95ebc39beabd39b56aba15b31c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7811710326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92988dcf01eb8aa8ea5e00a8476b9252812f4fd128b725d8b3d59d4889701c80. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/CH7811710327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356d8db291b6d256ae24a8b4b611098841b0721664a3c547c8fa3f8d32028d77. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH7811710331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873b65f49daab016f98705b14650940e13971cd7598a94796a617ffb687b2688. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:02:08Z), 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/CH7811710333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfce48b4aaa3f75b1dcc6282829de8dc8bd754bfee1b0958fed09d691f201ef. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CH7812053467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5b2d32b518835f5d5ea006f24552b4d6273f3c49afb69db78a3a6ba5dbb941. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CH7812541452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe068b21ff891c5af432ae35e9b10675412e89714e6d227b4a210a3d8422bfaeb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CH7812544497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c250dff914c2ba265bd7efa2a0aa423489e47e44932160690ca2886250edb6. 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/DELU70116205.
Bei uns (Remix) (feat. Kero City, Telly Tellz & Steez Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0157620165c321261beb99194d19631f1a3c15b26fe8b28d99fc27624be4d22. 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/CH7811710382.
Trauer (Remix) (feat. Sinan49, Telly Tellz & Leo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145b6452bb76f6dba770e447d61eb76b8f6e1050d1e0de1eb57cf32a29156762. 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/CH7811710384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc1723c8996e475c2d575c05a343ec88d3a2d62105141b083b0f910abf2a73c. 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/DE2DY1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10890276cadc7b8315e03973dbae07362c350e40a71f9b99d59321afbc6e5fe0. 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/DELU70813072.
Mach Platz (Remix) (feat. Collin & Telly Tellz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d50e714514d4433d1bd713ec785dfeea009a6221f9f3bfebdfaced3f47811e0. 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/CH7811710340.
Lehn dich zurück (Remix) (feat. Telly Tellz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d7646faa744570eaa330868eea134def5ed37cc52f0162fb8d399d35d5bd32. 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/CH7811710349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec1675156bea7af824756b787183054c0b17770d884d9fd4f578d22443bdad0. 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/DELU70610014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28d1e06d87c966120b7d0622f9ea8ac8edb70bc8674dbed2509cd710c6d8659. 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/CH7811710304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c46960cec565b57d5030bf9d27ff7abadcbe9922757e1147e3915bc773ac885. 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/CH7811710306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c187b5affe09c3ad21b521b65bb6d2023e4b0f4b74db3100468807814792147. 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/CH7811710307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adfaf12c516f79988e5bd930f445f38edda274b14bfc94f730696a36fdfd73a. 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/CH7811710309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f5b3e0af028396066e38973bb0643160ce172116148c28210ddd61f9660d5d. 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/CH7811710310.