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 0xb0ba8ecd988f28551daf6713a03678dfe9ed6f89399b3b9113a21e21076ff27b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62fe39ca-8258-4c17-8717-a5c5c5c8676b.json and https://artists.proofprofile.net/proofs/artist/62fe39ca-8258-4c17-8717-a5c5c5c8676b.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 0xa136e030274c6bcb6c80144c1900845e193c3e76fafb0a2179e68627ab4c8f8d. 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/QZNWV2461981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5000f2e798dae4460510b4f3baabf0654a5da1efcc63dd883da626d6873e721. 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/QZWFH2448347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143394a424707027300a5b8e1cf8fba3205133f12783e01bdfcac374984f19c6. 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/QZWFH2448342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8be9ff5877cebafed2fe8f34d3bd5cc8368a28a6fa25897bb28d7c0edc6984. 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/QZNWU2457502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b89d1b8b861d0329e361346e56d6a1e4190d4d82bbfbbd2fe753a68261f29. 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/QZNWU2457493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7511c565e14a2f0f5d35556c9fc11d5b021c002836e7988b0b72517e1bd34c0. 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/QZWFF2328467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1c5070ed02712df73a6be2035d0aea9e157ccab10b4c95125cddd77d342707. 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/QZES92476926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e4ff7cddac63aab02979da0707d62df1bbc6694678a030159a268f4d85892. 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/QZWFF2328466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99ad35149315e44324cb9e999472e70eeed426dccf7a522e5db95e58ca7efd5. 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/QZDA52455262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3dc0fbdcff0c149412c34d884f65efefad92282845ba9a65f2dc69da1fc96c. 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/QZWFF2328465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c28ec99df98e9cf4262ad3c3b77450c8b25a2c2cc71cea9cad9c593f620a3. 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/QZDA52455261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cc913ea81b5522ee481bc22828a34a6d9cdd904ca060091de46255ed12bfbc. 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/QZWFP2356249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be5b2f8e39c6a9f8724ca6f6390cc1d8a075671b48d6d7dc79a2ab2981a3434. 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/QZWFP2355491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66542da2ac2a71614c3ef573041afc4daed98641d7c4df495c5232d21485be45. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZTAS2350589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f10244f6af70c193aab2241f36ad6f9c3dff3a2c796fa68045a76901b7b76c. 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/QZTAS2350586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beaee597308c469f53e8c09e070f0b1e8810fc6e3a90ee4bb870508700d26f1. 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/QZTAS2350576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4449cba6a6bc3f35a193f689456226e947a3955f4caebe59c3b6a2e4a5135b9. 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/QZTAS2350575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d67807716fca9e1b7934b6f21db9c0ac1c0afe10d6fd6216bbf3597cf79e1b. 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/QZTAS2350570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3dacdc7ccafc0347687f7d34ccbbbfd9b95f6a9187bb70a433d27607bdefbb. 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/QZTAS2350568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8292db4d7826540e14f8b07869f055c7f2f8127d1d739bea18f4fb8e61fa2e3. 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/QZK6P2399651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a5eca7c4be25a7c81fb691f11b78fdb559c799566881214b94b97f7be8a0e. 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/QZHN42377915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307bcfe1e8753b07b9f2ac1082e8adae8e8bf8f0638b81a42c927cd6f16fc16. 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/QZHN42377347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657b74aa2106f48c85247bdb3293eb42cc47e9041e322392325d4819c939c31. 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/QZDA62395677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b021a0b59df48d2cc1ab4f419beb8eb86cef5b54695dba42a55620f6aae23d. 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/QZDA62398489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca934434742704478295dde0128c5fa003c0c20705e5e76f05f87f54062cf8d7. 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/QZDA62395824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a33433258a18451318fdebf7af7205b1b6863c9bbaeef91c21bfc1303fac16. 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/QZDA52354080.