1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3804e08b7abae3312bd9e31e5db2cb796cb8d155a12e25cf5f36dc6824cb6af6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94c19245-3788-433f-92c9-d37b5e42eb61.json and https://artists.proofprofile.net/proofs/artist/94c19245-3788-433f-92c9-d37b5e42eb61.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 → block OTSBitcoinBlock must exist at that height 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 0xf6a1c52d89d7bd398b70b05643f2f775d28405554ef34484713de7830e19a5b5. 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/ARF061700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddeac071e62ef1a725f1892ce1541759a7dbf23c81ba2edb91004eed77c4380. 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/GBSMU6520929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe056a1552f1b466932a8eee01e9433a01bcb491a06b908666ed008d158e6ac37. 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/US7VG2544629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8fba566a754867476c9a155c1b5506273c20f28634aeb840cfedfc9b516e4b. 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/US7VG2544630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c9449f5a09cca0044bce48acfe63830b41e001ffdf91bf63f87043ef7486cc. 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/QZTPX2314241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafdde6b6fefaff4076097d0ceb6360f7f4f237277c4b626d6fd55b272f3b87a. 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/QZTPX2335281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99b6ad8a6b646ceed1cfd18dab4b0cae0ed7ec72d85a5268773aadaa6c6852d. 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/QZNJX2378466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392c8291bf1610a1112399d01fca833868cfa5a7bbe6626e0dd3dfc50a958650. 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/QZTPX2350704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589dfce0991922f2b261379c70bcc1890a142cb9bfbabcf080ed2c826e9112d6. 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/QZW9K2393978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a880a75d543402530acfa66fea0d9ad6d800efdf928c1cae6c3dbcd265dc33. 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/QZW9L2336766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca4f2fe8f2375fb8aa0e30614c2a4649043d206b1e339d9b3dc443bd49568b0. 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/QZW9L2342947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688835c5a2c657ffb66ca09f54839935dab22aa3e952c682568cfeda7f7d911a. 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/AR7YY0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d48e344922f823ebd52cafe9d9d21be2b395b80c7e99c5362e2c4bda184ca8b. 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/AR7YY0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2f0db29ef2a18e20238c62f3908c9f612de94158edcfbe92346e8c065c63f5. 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/AR7YY0500005.