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 0xea93c611d1611dbc03f34727df36cdb7ddf7105c4f1bd87a9c5030d92ed2137f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfb449e3-ea11-45fe-b306-bb1f25e71790.json and https://artists.proofprofile.net/proofs/artist/bfb449e3-ea11-45fe-b306-bb1f25e71790.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 0x6d438ef16d6d17833b137833260fd8d4e47f6ffc088dd55f3ebc5d4c695a88e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATHK51200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ec7776c2f2b718a34f2aa8b101647e7e9a7deddc2cf1e81378114377e8be6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATHK51200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f3c5b4e34854cb52004d337e200b7c2438c6a4606f61ea869aca400940cf5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATHK51200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81c58d4ef4a23e9bddc48df206eb4c876c1e9d177f6f0777a5fcba0f6e4715d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATHK51900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29460e59e461732c968d75e93f284dadf9ebb7aa52d83c1ca3396d8d922b5c41. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:05:53Z), 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/ATHK51900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534bea0afcf75381caedb586c0907ed27d380a3f5746652d477474054f93dbbf. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:43:39Z), 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/ATHK51900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519e914feeef266eb994ab3bf2a27068b8483f67ae763aa76d01514ef8903997. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/ATHK51900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42bc5d694ced9c396060e396a4968072ccef164dcef9a7875199f6be0595ce. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ATHK51900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c28d2ad25ee7813e4a5b1f925c80e016893581baf65333c02cb4710f1a240d9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATHK51900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead44e10dcf69255afd0a098956cd9fdb607bedb5591eeeaba09e78d5165350d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATHK52301202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf667963127981304d268785a22bebf7637d60fdeb67c719a6bfb7ba4848512. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ATHK52301203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53878604818682b8c08dde5bcc83428602fbfefeecccaf7dc811b8aa69c4cf43. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:58Z), 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/ATHK52301204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474e5e65d2e71469bc08d12379650631aff17a754580066d597f9b33e0120f5f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:21:47Z), 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/ATHK52301205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d0e4c06ef179f38f6e805b70ce6d2dccc183bcba19077d6a8a47a050c5895d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ATHK52301206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a1eb35afe442cc8307f01b2857eac3651fd82d97fe530600f6d80bc6ed4b08. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:49Z), 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/ATHK52301207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f96ea9871d89d36898e0f2e117943e6d788cae370268960e7c3360aeab97b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATHK52301208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41307524bef847853a3a0611ec95c51f53d4a36c8a172618eaaf0b77d6ec24. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATHK52301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89590c22440c66ece85acb2ccc94e0bc7e55cb391ba4096e0e19afd9e25aa7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ATHK52301211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebb7b056bcbd5aa1066616e5976e24ad23093a4b42d6c796d9fd73f577db664. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATHK52301212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4d56b724b3466c9a4049ffc87d329dac7ee8cf2bdc4c8bd8a230997feb50f5. 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/ATHK52000204.
Kein Applaus (feat. Monobrother) - Trishes Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc239d4259c50293b848db6a3e4d34c762b15893a188da065f8ba068410b80146. 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/ATHK52100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467e2cb474f069fd8bc81cfb93a7a0906261a3de81f09a68af110a6bb9ed39b. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZHN32093238.
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