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 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 0x10c0d0bef00d7fa0d1363b7fcaa666e527b943476c0c531d2d81e9138def2125. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e36145-0cf8-4db2-9bd0-e1c9a818540c.json and https://artists.proofprofile.net/proofs/artist/34e36145-0cf8-4db2-9bd0-e1c9a818540c.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 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 0x965c0f360a41a2731eca7ee6a837b28e534ff5865b2c4d514484ce26d10497cb. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USDBB0680379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8dd038289d4da4da32d52c9217db285134b725d6234da6f1cf989bd30a8608. 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/USDBB0680137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10f3303b39184be453e2518d068310c75a5a50e7dbc8090b865e02b929eda1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJE2531670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce9540c7cb9f8ec86163764246133727bfd97662683ba4ead6d5ea5e32ef0f6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/TCAJE2531687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a55079365f1c6d163973d5e03cdd33841a0dd0f613c52c37c8204104f1a4433. 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/USDHM2111897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287b753e447933ac50f27ebfb193a8f4f8fe2a1584cae69a61845aabbb5572f2. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USDHM2111900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb94c192009d70f9872cc65d3649f4b6ceab33777e35a77f962a0e3734937d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USDHM2111901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc591bf806e4fa2ff1ba26999344c7d00d64ec19fc778f59106d917f8cef11d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USDHM2111902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87adb83f35b89b5eb9e58ce6d90dd19dc9a3ebcd079f1d916d9a9b7262f950c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM2111904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc9938ef3fa491fdc1f18a5bf2454a556f813e67996f4581a7a3d35ae629f47. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USDHM2111905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9300ae7d3d8c8d9e587bde38d00bdc98f6f4d238e123d8a98b4a21780b0811a. 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/USDHM2111906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f64d90c992d43db5cad8eb79d6b2f3b5cb1db928d4d933b92bc068c73b6e1. 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/USDHM2111907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b999ee5a20e0fbf239d2a5a7fe85f0fcc9d247ca61a6136831f135b5249297f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM2111909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5eddfabd3921eea5a509b41dc2969b1971966f6798f545738d1a3f40288d06. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USDHM2111913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145883f2c4338223079aa9629b0973f677e406e854c2bcadd87fe0a5718c61c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDHM2111914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41d2cf76cf1b0d2b9c966866a48ce47bcb5a265039c6b9509db47e1bb45475f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USDHM2111918.
Haciendo La Cena (La Mujer De Mis Ensueño)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeb36ffa799287be51703df044bbc256cf232a055695ce755e627fab1bb0b5a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZMR82200578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd04f3a07d2ebb8f3ffd0af9dce5182a9ff74d32bd18211c009c302865945ac. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZMR82200608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc492b409c403f0461ccd1b6126e8cd9fc89df633ce96ec33037700ad96bfd8a0. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZMR82200609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a83ece68cb6047de3cce1ea100fcd1d21af40f59d659138248d7c1031dca157. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/QZMR82200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e22e662acf4a3b43dfe750593f878df5cb7f8d717e02a4aaeaed72b66113d02. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMR82200622.