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 0x49a3d8e037e995a97e5014934770972344b813ad5f21902bced7554c177fc4c0. 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/8f44b9b8-8ef6-4dc7-977d-6771f89404f8.json and https://artists.proofprofile.net/proofs/artist/8f44b9b8-8ef6-4dc7-977d-6771f89404f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Digitally Enhanced Volume Eight - Sampler
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 0xcddf7be45ab950d9cd9d2c3442fdf1bf4b43780e6269da2b7d1b5bef12216d7c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBLV62316498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f449960b09e180c991926ff762a398741fd7d48bd5362f0b2af28b2ed3532f9. 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/DKX892400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e945df1101757583cbf7df66a9009f7dd1484e3cca61c001571e8bf22dcb2. 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/DKX892401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e889f26d8836e07b13345707891269dfaa187074c61cd3ac5d9c06e54d33c8f. 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/DKX892401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51a8bd357d079f65a062838d4ed351c752e2f4098bff945fbdc42e4d56187b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2491076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1275aace000dfbfe9f154c097c4bdfe3038136899b4fdc92ff9011daec7764bc. 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/GBKQU2491077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e2ce149b333892c3d043c84a9259df667fa984b6845907958a929c447d86e1. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GBKQU2491081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11da8b0250d703b7c93945677a0f37fc6c20c4a21350c2260d4b5d12d771289. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH3132419384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb62a7976057498405b86befdd9c8d158d26f74a44e6e8cfdf9c578f20f25a56. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH3132419385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf42d831c2dca06013a9b91b0be6c7fdc4c35b0ac1556896685bf3cf569371c8. 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/DKX892500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7f52f1c359bd36888f97fbd5430942420ca67f5ad35f8a3216835b22c67ea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DKX892500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592eb37bda9247c2fc936c24f2dc9da835a74c493c0d197578c0a578131b046a. 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/DKX892500102.
Everything Will Be Alright - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c09b18cdfd0f10c38c00c0593c56b30c6055841a73817f580b5298eb8dce7. 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/DKX892501802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9eb7edb5045f0220bff0f5ebe54bda38ad44425f1e13d337441791da49fef7. 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/GBKQU2403899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ec50bca7197437e7f1df3ad5b3bd7f2907143fbafd6012f24046f278800988. 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/GBEWA2400173.
Digitally Enhanced Volume Eight, mixed by Farius & Ruben de Ronde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1807a222842dd05e189a221070be97eabf49b06fcd92b2a8e7c2fa0d43fb057. 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/GBKQU2396519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fbf7fdd944e194f4a75089ba43061edd823871f75088219e8c87d4aa38fc05. 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/GBEWA2400630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadba101ed8624d71c07b3dbcb4f7a7d37dc31291213fdbac652370f72af1850. 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/GBEWA2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcd663fc86fb1d213501a5810b6fe63794c6c5e0edececf6267babc636e8d49. 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/GBKQU2418565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949b4d18bc842284a0088bb8a87e7273cbca493ab05c43778fa390a423e620cd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLD682400719.
Enhanced Sessions Volume Two, Mixed by Tritonal and Ferry Tayle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a48261b7c7f7bf7b9e082321c2dc4fb7e421760a8b45981a397efb317192f6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKQU1017030.
FYH425 - Find Your Harmony Radio Episode #425
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e27cc7855cab1cd9b3d3f60345c77bbfcf22ddd021710edfa3272cb40542aae. 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/GBLV62407101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81043eef7e405d8549991d6ce1b54f9366cb64da8296301e2c14f67585018cb5. 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/GBKQU2491075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51a8bd357d079f65a062838d4ed351c752e2f4098bff945fbdc42e4d56187b. 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/GBKQU2491076.
Colorscapes Volume Six - Mixed by PRAANA, Estiva & Modera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f42b27503852fcd17db6400e4a86d1c2e58119c0762cfb9683c1e3c53a1f2dc. 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/GBKQU2476903.