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 0x3003138d7ff33adb8852fc7b3f1368632f4f5e3b33ea417254f46751ce2b6198. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ec38f01-9824-4c91-b9a1-8f420e9dc26f.json and https://artists.proofprofile.net/proofs/artist/8ec38f01-9824-4c91-b9a1-8f420e9dc26f.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 0x0f8a6e9ca589186b8aaab4468a50b7d5c0c450d931f09e2e4507a2ca8e455837. 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/FRR642400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e695bfb656498ca3013451ae0840d4b080d4235acbd8bc56357a6bfa4852b. 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/FRECK2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6787c4456f2011ab45d7d35f86a0a905f60e0ba2e5eb74b7ecb5e87c54fc2. 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/BEEJ12200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f0a7ffb555e68ca32edc2ac59d706de9ab4d3223067b716e13857f534f29d4. 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/BEEJ12300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c8f8630b6953a66aa857fce03b4a54750f9ac120cf543c3baeff1dd1c1f54e. 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/FRR642300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2be500905501265db766a186ea87b2c119ff26516cff07a4d85e60b892682b. 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/QZHN32299479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46cc7e26b71773e308d689138fb8d320b7cce0a2331160e0047ff16137fe35. 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/FRR642300332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa85371f8b1fa21ddc7689553e2b7fb0ce5132c2cbb7fc37579b4cd228c34db. 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/FRR642300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd32dd7189c4889d2f49f32d61d3fe603f4297b99b4f762aac009948e61cb44. 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/FRR642300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11396572f4cd81f0ac5a61af05a7d0b8a2a6cfdd6624d67de9c42108873846ec. 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/FRR642300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c8f8630b6953a66aa857fce03b4a54750f9ac120cf543c3baeff1dd1c1f54e. 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/FRR642300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30345c968762d91aa22179c35041289c31ecdfa1c511f2bd3acd2eb62e2f83bb. 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/FRR642300335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb978d5962f5b22aed8b6f6bd49b7e9833fec438f6e350ac129966c0c5f98e1a6. 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/FRR642300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd77470dfb5be6ec54d31f76ae566bb29f509b73340743dff96bf0e693a0f1. 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/FRR642300337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87aa9e0266921b19b8f467e6cfac4fb23cac50f362225251e56dfd1de377196. 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/FRR642300338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85769a96e5dcdfeba218da75869f9ddef867f0945b45ac820b1febd4dd1553d. 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/FRR642201861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99c60a41c41890707cd2f60dfbef43a155f4d74d16010f4d291385b3abb44b7. 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/FRR642300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d3e59456780bed4310c332549a109406dd19eee9428cbd894f32b0d1e79ac3. 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/FRR642300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1d8d37b79e862ea1fc6fd646d50261e7cf4353056cfc4fd446e548ac32a5a4. 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/FRR642300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc21a4b3dfd11999975c6de213e3af00cac602cefa6392938df5ec8b0b8554e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRR642201644.