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 0xddaf7c5ae01486a790526bc2afe8e9dfa2f0dc26f083869a76a83ccb50eeffbc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5745425-9d1b-4f70-bb9b-313421c48ac3.json and https://artists.proofprofile.net/proofs/artist/e5745425-9d1b-4f70-bb9b-313421c48ac3.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 0x8feff1cd0cdbe52627bf4e6f6daffbc0ecba5a7d9d6d43fd809b8c5586d2ef5c. 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/ESA011805873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6122e0d2def3a1458df6b24034ab556b60aa71ae890c6e3ed6d5c53a392afdfd. 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/QZHZ32182163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670fc70c68d200c1db6a23b627cc52814f29296ae9bd71425a64f3c36ec28444. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHZ32182166.
Mal Tratao (Remix) [feat. Dulce y Agraz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c5dfa055ac41f2f910a220e5d4b9396678bc3d5618cf93257ea714ca932e6c. 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/USHM91918432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc68abf3d437b51643d2eae290f95d7ca50e87f3e4444db191bc7abb4310e3aa. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USDY42075340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723be16374564cbcd8f9041cc067a53ef7c21008cadc2eb228f9fdf00fae75cb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USDY42075342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c984140090b8479036a8d536f004ea7aabfca4c3b754e0a0b2835810b38db17. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDY42075343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa384004aa970ea93d29cc7fd78e26537a580e48fc7a5b0221698d3cb55596. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USDY42075344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5482307af0a353a8ec718f9055284060a82c6a815f476d928b341eaba0093613. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USHM22058223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb46ae38c6ebdb5e01dea1916689c373b5947beb10ab6e2c5e972ea640d3a0e7. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:22:21Z), 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/QZNJV2014274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea48fce135a2723b75923d61abf32c1a23a9fdf0f81bdc13a11ac69aeec06caa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2100427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d0d8d954e06b65d60e9b32e69bf085bb961a5e4af9a0e7c1dbb89a2873e98e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:52:03Z), 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/QZGLM2100430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb728075c725e7e101ff091339ed5f9336d88d502c80e60ffee73ad33caf22fec. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:33:19Z), 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/QZHZ42126533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae2151b93768e180d08f9c84e84224586b654d9a1bac8fc52cbc9d391aa885. 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/QZTPX2314870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb17ae6fb552a2d06bb15d106f29d6958f6500649b68f62f5c1c0fc664b1974. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJW2496991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaa7397f46848c7dc09b0b469943d5a8d7b24e5be75fdb8e60437854e01f353. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNJW2496995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc106e8e4f6e6107b730d7271cbc3b9b81fb132a4a02ba93c27905b0d09c32dea. 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/QZNJW2496992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658f75a55f77cacfd961089c79bdfc3ce02597a7673a737b0b2336f0ef0b668. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNJW2496994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4c04e617ac68fdbc7d59743a6f6f9a75ad24e35a8b7a08f74a4633c0fdf47c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZNJW2496996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc368a231134fbef592df78a80b2411a3cbed4b41dcf329ae0520905b931b311c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:33Z), 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/QZNJW2496993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a02aaf90f9f02957754acdaeca349b051d35e90ad44c34008b465256b92816. 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/QZGLM2591829.