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 0xb522a0cd459125b61161c8e9ea46b6d357515f7b0e1fb408e1f73f247b160960. 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/0a39f304-4b85-4119-8c31-f12c30f484d9.json and https://artists.proofprofile.net/proofs/artist/0a39f304-4b85-4119-8c31-f12c30f484d9.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 0xacc07dec05b4fbf677858455cc0b5275a6583bb4af8e457f8dc69b7d7b601f80. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:58:28Z), 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/ARF411300978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa956c2a3883c93115ab588e68088afba0fedd3666ec0e5980d6f5c8b8c095866. 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/ARF411200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06178e36ae40dcbf13c8ca039c9c88aa9416c38cadf05a3a0884631263f5eb7. 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/ARF412000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06178e36ae40dcbf13c8ca039c9c88aa9416c38cadf05a3a0884631263f5eb7. 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/ARF412000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b9a4770c34506f6ca57ae91530e62ddfa5ea6105eabd253f8a9cd7414bfb1. 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/ARF412000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b9a4770c34506f6ca57ae91530e62ddfa5ea6105eabd253f8a9cd7414bfb1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF412000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04cffe08e49a975f326915c4b05cc82bd1bac9f5bf9ee092b44ab534cbcab5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411001047.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69b53d07f21d3b0adff54cbb268bd3932fb202ab65d125411150f9eac9ca3ba. 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/ARF411701768.
Vintage Café: Lounge & Jazz Blends (Special Selection), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04cffe08e49a975f326915c4b05cc82bd1bac9f5bf9ee092b44ab534cbcab5. 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/ARF411001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c0cbeded7d55d587a4427b8935e58e6413183f858e846066b96deeeaa84cbe. 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/ARF410800990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0db5dba1a65324a4f957899a4fda10791da3c6da48101c07c7fb2b0a546026. 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/ARF411200829.
Fading Like a Flower (Every Time You Leave)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4bbea4152b4effe29075e9007e67b864267bf977a6691a9799292a592e7e5d. 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/ARF412000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4bbea4152b4effe29075e9007e67b864267bf977a6691a9799292a592e7e5d. 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/ARF412000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa956c2a3883c93115ab588e68088afba0fedd3666ec0e5980d6f5c8b8c095866. 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/ARF411200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04cffe08e49a975f326915c4b05cc82bd1bac9f5bf9ee092b44ab534cbcab5. 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/ARF411001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0db5dba1a65324a4f957899a4fda10791da3c6da48101c07c7fb2b0a546026. 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/ARF411200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e8e61a0847369a6a14c306a289eb62c49112c6f5075c00845456e2794b993. 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/ARF411900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04cffe08e49a975f326915c4b05cc82bd1bac9f5bf9ee092b44ab534cbcab5. 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/ARF411001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5591e38629aa3a50b361cef08d017cb08f27fbb33a0899b1ccdf17584249546. 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/ARF411900155.