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 0x07d26854c510ed4d50ea8e973a12bf95d418c65591e52b6688b770d9056b76a5. 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/9744c594-80b9-4e11-8593-3d9ca161e6f4.json and https://artists.proofprofile.net/proofs/artist/9744c594-80b9-4e11-8593-3d9ca161e6f4.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 0xfd67b84596ac7c95fb0a86550c924a3b5863776247f0fc32106a324ea4a15caa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAEE1945699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b260a43070861f166d883bcfeefe0e0b548801355b4aca4e292980a324133b6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEQ2004358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d34acfaa380f89eadf0482b9d0f85ab7641a123bc69785904bef8795cfb7080. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFF2027763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3977dca2dfcc3106f8fed8f21a9fbff2a8b2b4675aad38e72e695704e4bf1c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:53:59Z), 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/TCAGD2278923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3a1587bc9a3ef509222a1c3fecbcd94104a86d94fb2d9319afbbdaa17c5d5d. 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/TCAGH2252044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0fcd5e91ef0ae13609d9c458d2f2754d69c1a381fdee6104fcb9d3db7058bf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGS2365039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8215a7474c6fe248cf3c3fe8277325e2ccd0d04501a9ebfbfef8174a45b50a5c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCAGT2382315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde031975961b9809fe0fac947ba5e47e516c50ace11a8c5eb618f9ba698dfc00. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAHF2330636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9101b6172cbd9abe3bf5a832e3672860ddacb08762084cdfcce35cf0ef098b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWU2352853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4fc582015f230f3c17d70cee9f56450c86c168645c6a9a45cc921a83786789. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ32434207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0d2b0e5a09ce7381b4cf760da863aba770270a807d8e9be08858c4c829f7b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:34:34Z), 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/QZHN42452796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e1e9adc5427557023dede1ec5ab648616c9530699fae6ca93fbfa2d0223b96. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6H2466999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07113b57cfda9614f3540fae01afa508f89204c8fbb146129cd08b8ecd2fd18e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEN2456424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3a7b05bfa93a0b8d6e67bbc72cfccdafef1b416a1bbbf91cf7f727da302543. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZWFK2424716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b4dc36e41caaaf2e6121724afd0a74a3a2a7a223e3b2f41dccb9357bc909e4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7L2412408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dff60c67e966e35549ef493fb0ee331e279a1081b490c7ad1919518d7e5a36c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7S2410944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3ae2438f3d3b4e982be5deb968cfc052dff378fa6de60110f653243497ac2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:42:52Z), 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/QZTBE2589555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9548ef92e8c19e3ea582aa80264c954c809cf4e6d194b9e90ee79db8ed7629. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:01Z), 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/QZZ7L2589445.