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 0xc90bdb16e976eaa8a34585a8655f9eb56fa28355a56913b4ac3f336e68876925. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63ca8565-7a84-4e89-97b1-2520ddc0ea9c.json and https://artists.proofprofile.net/proofs/artist/63ca8565-7a84-4e89-97b1-2520ddc0ea9c.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 0x531e3edeafefda6c8a387ff07d2e783db615900504db8074392079e1c162bd60. 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/ITC330500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8e49216ed06da5b60afa982464c2f9d84584fce446f90686d99de60f6585ac. 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/ITC330500133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51a604bdc212fc30580d73a8036481377374c6c6e52ab013c39d1b57836f044. 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/ITC330500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e561c90d90cad0818571e5724cef48195af21dd1ac99887088c634d8e94ca35. 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/ITC330500134.
With Or Without You - Minimal Chic Goes To Dublin Radio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0203c322d868b0b4170c85294ef923c1dc89bae4a625c6e63bfe4fca91ec2f3. 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/ITC330500099.
I Need the Key - Original Pop Mix (Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf702cf8b7dce4c237de69d89af2e6f2e7c4041b17c914a6d9d3e1730c6cb0865. 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/ITC330400014.
I Need the Key - Highpass Remix (Uk Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb78d0acdcfeab898d9445ca54019522909a2efa653ecbb17d2a6c6721d79e2. 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/ITC330400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5086daf1e014a88195e8bf0fa54c937d82531136dcda4713b5b675f04e9496af. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITC330400019.
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 0xd6482220969c9b03db933d14e0b4628c7d9ac38428127f8c16f4ffc717008661. 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/IT00D0206303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376c2b7da9967ce051348250fefd68fe048ad99ef7677f1a1f64cc7d68864f6. 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/ITC330400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b1e4747dd5550ebcc9c5e0a769470995e316798f6c2b1cab017a87997b16c1. 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/ITC330400115.
Enjoy the Silence - Minimal Chic 4 Big Room Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7de7a631f90377f180c252234f17c055bfbb2623478f903cbf36df2eb765117. 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/CH3130700069.
Antillas + Dankann Best Remixes 2002 - 2012, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f8a74b33a5add571b16437f2b294c5ac5f7e42d3973f8fc0609f08a0032a64. 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/ITC630400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d3408c7934a096cc971e2cb7f1bd53cc1138ff75a4705e7fa1caa8b363be52. 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/GBDBD0300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1453cc3feac57cdcf08a5c2416858b5be76285f3f82c9a9887ce213e2717f5. 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/ITC330500078.
Save Your Life! - Gianluca Motta 2k6 Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c4657835fc39c26ad33f30e65537a65b381caf27d30d3dd970a793e6412f71. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITC330400096.
Play My Music - Full Package (A Benassi Bros. Production)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7801e554c5aec087506700914103ca0582febbc38b1db4acc13b878f4b81d32. 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/ITC330500016.