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 0xee04ae42a4c0566ea5926ba176d9fc3c2bdd9c4e83c8e46e30f355af04e770e0. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a674b81-b6a1-4aa0-90a2-12a7c885d495.json and https://artists.proofprofile.net/proofs/artist/4a674b81-b6a1-4aa0-90a2-12a7c885d495.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 0xa8d104422aaeb7b1e28a7513f9f20f9a9c8f3f285836e31cbf66f4607a1ed4bc. 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/TCAGA2292379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87c49c768ece1d7fd0d3d19862dc98068ab85f07b1f77886524847af9fe1a6. 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/TCAGA2292394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69b474c66399c258ea5467c93ac563b7424df9b810774f9a0ce48a354d332ff. 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/TCAGA2292398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84181e8b258f5fb0ed569a80410932be6fe32d299726d98fe7c9f0636292e8f8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAGA2292348.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b58bb40ab0fec90eef94c5f76b186379275ab102d528032f431d8d4d0f6b8f6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAGA2292367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe459b5157fbd929b16ecd19800ac16ffc239125a9f06550d279b46735b515c54. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAGA2292391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7128ec36867d1b4aa7af85f0a2d4c62a95d33730de34a0279ae89ba20680def. 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/TCAEZ2084744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f931426fb68035f398f12f2de0e8388b98362c59988784b4e8428f8909ed179. 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/TCAEZ2084771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08adf92d91f34247651b523d15e18a04b99c9b9a6cedd0269b305eede3bcd616. 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/TCAEZ2084780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99012e3b25c7837c9f9c5f9873b63ad94206a653d6f83a8640b9448887662f69. 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/TCAEZ2084783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1851b5ca72dd115c09100a9360dc3d5b5c542080f046365803c3e4ba4fc83e7. 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/TCAEZ2084856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ca705beca902cd4dd0620c25d90a4162d49dcd4e98d5d329d524cfe88d8dd. 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/TCAEZ2084917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093358358d0dae65d44e5b6de5c6c305051a7555d8fb2565cbe678a547b94467. 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/TCAEZ2084928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f33f16c671fbd1e2d32d22901904bfd79996b79157428503b66dfb06cdf46. 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/TCAEZ2084933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fd33d576003183a46e6c3febb2fc018e20412a97472d2e2b0a2d54f978543e. 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/TCAEZ2084947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf576d87b2a6d68028780b1bff59844060d66b8f432a1831f29207b192542bc. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCAEZ2084908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182ceca83dac740863cf8be6783fda972e358e7b24e1c426f0ecfdd5ed941c3c. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCAEZ2084902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4355a61c25becf6981ee69aa047175fb52bbf758f59b5b5941e8c872e39d7b2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCAEZ2084912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe061466ff8f3324a96722f287c18de022f1765fd5937eedf43b3c8179fa4d4ac. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TCAEZ2084922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaea53aba7a692fb0d1a00e25b3bf8e39e5b0d348be16142ccb23ea853c48a49. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCAEZ2084938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4998687605781151b83bac9c37956ecd870291ddfee0bf4a7eddad87f843a5ed. 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/USHM91915159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4306178e2619d2750e074e71b52433d26e053103706105c125c68e0e1a32e7. 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/DEN611817330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd70c29be208ad86c818504c366caeb39f46ab36ba4f899b04cf6b60304a9875. 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/DEN611817331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06572a773016b9720a1cdb9df760c2962be9e51cbeffdbd4b91e116fb9fc9d2. 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/DEN611817332.
Journey to the Moon, Second Reprise - Part 9 of All-In-One Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e308868d1704d488ea0d37c74812fce1e3fd91634a2220f872f756f29b3fa20. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEN611817342.
Journey to the Moon - 1986 Version - Part 10 of All-In-One Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ce0ca0514d97786a40f8666bf472f063633ad9bc3f6297d92433036bcb2ea. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEN611817343.
Midnight Hour (Vanello Italo-Disco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991909319a93fb9bf98e4527415897e7c03d863abc3b5edef9ec040cff90209. 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/QZES81937903.