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 0xe514055065d8f5bc64cb3fd8ef793a44a6bfd0ec2e45568405b52e478d5a8dbb. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e339bbe6-b351-4620-9180-ad85a1f13670.json and https://artists.proofprofile.net/proofs/artist/e339bbe6-b351-4620-9180-ad85a1f13670.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Can (VONYC Sessions 800) - Duderstadt Uplifting Vocal Remix
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 0x596c3bdcfd2f2cf5839fdfae03adfb58c332f33d4659c4e8c7cc29ef4b951c01. 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/DEQ692200372.
Unbreakable (VONYC Sessions 800) - SMR LVE Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c6e4d86ee15df2157e946f70956a93f8a25cd8e7a498bbe0b6cd78424de9d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEQ692200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5335d75533268116c9c6c818b535667154bb0aa1f72c806ac7a3a664ca00700a. 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/DEQ692200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72129991cfc9f8a5c8c118e7c0edad13e4c527978b392f4fc9b4c0b4bdc62a2. 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/DEQ692200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad52c67a8f27f3d959e4b7814837325041b5d4828d7a987e83aa26ce2d656952. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEQ692200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b674f51f5eac720262aa21482614b8e87d0c3987926d70fe25802acc989742. 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/DEQ692200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3db85cfdfcdb17db6c456f530a42664ccc96562982c0a7a015c61cc8812e951. 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/DEQ692200382.
Beautiful (VONYC Sessions 800) - Re:Locate Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01acc5ba34d4e008d3040b7a4ef161c44d0d2002bc69090991a4b2d2450e792. 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/DEQ692200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375c7618d5126e61234e64969baab4a6c806a7c80dc711f9455e7f079692244. 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/DEQ692200386.
For an Angel 09 (VONYC Sessions 800) - Filo & Peri Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb14487e370d82512720face0af92e98bd4e2dcca2751304d29d936c1f9c74af. 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/DEQ692200387.
A Light In the Dark (VONYC Sessions 800)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d734c0c7c07b4355535614a69a0cbb8779a39045647596e7bea6714e7be1ce1. 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/DEQ692200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae98c108ae5a5e08c6e07e12aae46c13b4377fceeb52dff0a07227cb34d7f218. 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/DECY51171001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e7f6796af8ae8f25dee44c20c9c8b5b2e236b92aaae58d2eda30ca27e5f507. 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/DECY51171006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87752c1952009fdd3ceba626c51deecdc7ed8e4765a052a029f14a74ea21a5e. 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/DECY51171010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9483806f0d189cf5e73eafebcd51697e30a9657dcd6d8dc0f3bbf3f05d210852. 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/DECY51171011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bbe424a44c3ee23927f838baa378dd2686e2465d6d92b59a8654f91304249a. 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/DECY51171012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78be17e7390487f4865c84cf3cf0a4c175444359127acbe46d24bcea3c19662. 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/GBPKF1000008.
Shed My Skin - Pete Heller's Stylus Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c5b1453c9da3ff2e08029df9ba01abef6a749d77d01fbe9e1376e34557ba4d. 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/GBERJ0100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941004f76f764cd16a12606cef023662c8f5978e7191d9ee323ba0164c120d80. 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/NLE801600552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87990b9909e2080f4d158bca3d326063246386b409428db7b0e644c8def66f26. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BEN582300420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af0064b0876c03e22c8344aa40e5bc44eae6ca1920f864e3e207b1b8cd087c. 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/NLE710780721.
Innocente - Mr. Sam's The Space Between Us Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a69b188316b45eba4515cae83f2bd80d230539adfdcf7618cdea8cc8fd4a8b1. 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/CAN110100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee47874f4e7b80d18d7e65b13b2fe21cc78c2f61f502ed80715312c107ae3004. 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/USFBJ0610022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36571cb4b559d117dacee1200a67f64fc02c489b4d5ba9128d1f5ce7ad31c935. 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/DEE869600548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfad6e9247a1609fe76ff58dae94c12ba4831b5fea8fd491f8eb9f2f9fa2c63. 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/BEB709735073.
Monotone - DJ Serge & Pascal Extended Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e298d69058b338bff5d577b40c4cacbbdaf5cbe4fcb6a959738b554ace3d5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH6541673846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b64bd0574ed1f07c20e3e40e48399b00d3ccdcac02e0a873c3d146957a6249. 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/DEG840902430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40e7ee3b3402537ce05104dc7cc95417caceb9c0fc74c54d2716a6bec4bc758. 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/NLL330500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a20f7bbac1c149c1200c057fe129660ceaad817b8553bf1f4108925bb8218ee. 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/NLS240600395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bff4851e69e8a70b035513945bd2045160667ccbaabfc1b842bd332baba1795. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BEN582300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a166224c19d1e07cb4dbc6df35311d526c94d6ee014ccc76f6ea9adb721f99. 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/BEN582300422.
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