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 0xbc84796985874e0c0f2ef6ae73cc4d7dc339a11bddb6fd476a3ae64809bc5bde. 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/52059c26-c480-44d2-9907-2ddf8dca0da7.json and https://artists.proofprofile.net/proofs/artist/52059c26-c480-44d2-9907-2ddf8dca0da7.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 0x414a2dac1d4f507f1f238e06fe60f35ce1f5632ba2b371363a57405607013b1f. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NL8RL2333027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc837b34ba24df4ab18ea351b053608fb1753bce1077162b3054e3d4ec7d65a67. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8RL2332571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc837b34ba24df4ab18ea351b053608fb1753bce1077162b3054e3d4ec7d65a67. 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/NL8RL2332571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195828562870d5dbedbfa8236df45d7628a81e15c70c7f7273828f4c818d4c0. 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/NL8RL2332582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb533ae713ab6f3f47527372f9833c7129d9ebf974706a9b3113afe21bf11c984. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/NL8RL2332581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195828562870d5dbedbfa8236df45d7628a81e15c70c7f7273828f4c818d4c0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:38:50Z), 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/NL8RL2332582.
Acoustic Essentials: Angela Sings James Taylor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40e9e1b1a8b8167a87032cd843ebc8d26a95e0b5890c54d9b21a5a83da5542. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:34Z), 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/FR6V82184509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a59492eea234504b2839c53b3ae5813fbbf929d0b7b91a2cc83055bed9e192a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:30Z), 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/FR6V82184513.
Accoustic Essentials: Angela Sings Michael Learns to Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db8979192b04727a9de6d9d4d3aa77db968ec07e623edb1f1b5ee21687396e3. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/PHP171200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379de0e7e85a2c64ac453e250463258a9247549de76078fda3e3e4f0cdf24a8f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PHP171200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd7669104565daa64e5934cea38f9e94d70718fb9078d528c19ea5f6beabf21. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:31Z), 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/PHP171200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e6c67ec47fc6096a7a625db9f6de398b8036ca02f32f84fe7c2045e424adb3. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:52:28Z), 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/FR6V82184514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44228c0a2109741bedfea6eef0082519033bb1ea614ec796a18d121f47654ca0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PHP171200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9911bf005248c5563ef76b47e9a09878ba12cf8db0b8aa9f83f30d0d491999b3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:38Z), 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/PHP171200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf674b6c1e212b509aa81b9958a2d893951f9d637f3edb5acc9f99bcfa74f40. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:18Z), 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/PHP171200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5788acb04027214b964992a3443910e54478a81fe4e7618b3e4e476e2e2c3be6. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PHP171200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bead08e83ecf525753329800d0592eb10daaa931446ef07cf669ce4a8f9d92c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:20Z), 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/PHP171200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613950168e050b4298dfc429f2711b3f089aa9cf9e6631b7d0f454105029cb7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PHP171200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a476b7d3095d8b4ccd4267a85b39a364a2fef3c25743ab4f3ff6b54fc4aa9c. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/PHP171200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a31d70b303d572a858b58437e3d76bdc211c6c5c82e978bc3b977b4b56ccb9. 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/PHP171200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4207d3ccf6b23099fe96d1efa445c8d3913d452f3b044ea7d6f99d2ec24a5f20. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PHP171400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b39e3de83bba6c3b0df91741617c45320146c83d32dd8833ec5cd507a57188. 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/PHG092000009.
The Day You Said Goodnight - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b39e3de83bba6c3b0df91741617c45320146c83d32dd8833ec5cd507a57188. 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/PHG092000009.