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 0x61445e17d50fe92d7639bb0265ebac14fd2b6250339208d31110640e28358e29. 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/8dc78333-bfb2-40a3-9a45-3db6c071ee28.json and https://artists.proofprofile.net/proofs/artist/8dc78333-bfb2-40a3-9a45-3db6c071ee28.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 0x9f55e05bb5d5cbe59cee6b21b89cb963b05f8cdcd5149f8ec571ef6f323c5bb9. 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/BK4DA2424927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd462f5e2737466a7a1f9ac97fe8912d41c425ba4581547f7c93bb2b53e2612. 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/BK4DA2413783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762c7a74fa17fa85ea08e3fde01b2b8b6bb0fc7d50b110036a860a3ff171aa19. 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/BK4DA2405739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830e6a5be12aada68f0c0d7558c067a8d2bdd4776c1e14b422fe17bcb139bf0. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/BK4DA2301759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223f64671efa0e90992600e70884abe55ff0c2afafe018ab623999fbbb97fe50. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BK4DA2307938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5215792364e98de764721ac732d83327eb123ac67ca11a9d63e27c90ec17ab. 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/BK4DA2307939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa574017440fe4d87b45bc075a3667e82ade3de2ca68a563affc226255e3b497e. 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/BK4DA2307940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b96b12d1c5c35042fb1c53b8a1a8938e6e103d48cad9f699643efa02cafead6. 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/BK4DA2307969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32ae424df86f257f9c4e1cc8a32d977ffc85773b20c301d5030081aaf0cee8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BK4DA2307941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746cd562e560eb3d8f371f8d4af8579bdc5a15b93dbb0c2d1a021fdc84b0aef. 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/BK4DA2215124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfbe1edb492b0bf90f46edc1853a63d816a09a1ff23f640e00406fd8bf8a568. 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/BK4DA2307944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e225af8ad8f331715b129f592cd84be74864a9a7fb9ba869c3651150cfd73. 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/BK4DA2307945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff307fc6822460a8aebf7fbaf8e0cd1fe445eb619b5674d647c553f919c6b7f9. 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/BK4DA2307946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f594546a88a4dce37859af05e090ba88e1da1f5d5bfde00a185dd012f2f0da. 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/BK4DA2203064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c63a262398054552289996ecf26c669249a87c7fd08a9ce1f61eeddd7240ed. 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/BK4DA2307947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c076bf31943a21179daf8e3817b922c7a35a54bd6a12e05029d5d34f03b6b4e. 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/ZZOPM2239630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98070148c751d304acb4765071b695f4619a854e69f935ca3997e431ea7b2151. 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/BK4DA2307948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830e6a5be12aada68f0c0d7558c067a8d2bdd4776c1e14b422fe17bcb139bf0. 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/BK4DA2301759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5e12154dda03094f1b97acd0ca09ea23ee2976a56274fc8605da5e8451937. 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/BK4DA2307949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac03eff32f846fdaa9000d318b8ca91a2eacdddf97bc81832d534964903cec7. 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/BK4DA2454887.