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 0x3f0d2a84ea13a2a66b4aabb454528b99cac43c9db3bf35f9fcea53a736015657. 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/27bbefc4-a886-4b0f-9283-f26c50ffc75a.json and https://artists.proofprofile.net/proofs/artist/27bbefc4-a886-4b0f-9283-f26c50ffc75a.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 0x6e96a576758f88a550b0f363ba88b165b57dd659f6c383c2fd4bf75ea021b30f. 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/ES5108000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2281f8543af49fef0e5c389847214a81ca545eff9b80d05b274f95ed7109c898. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES5118201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dd0a625cb8fb5ac4d9fe501e97a0ab34756320a969ab91c3be691eac2176c. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:00Z), 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/ES5118201379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95a31b04a4338619d4663b69f94108455d66e6a37aecab0aa4dbf2c851f68cc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES5118201380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210d1f10d40dc56387c7118120a5ec36104e9b16cc0b975181ca23a8ccbd540d. 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/ES5118201381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57807c5546ec3b00cbd6c1c54db29f1aba2dfa30493c21412d414994801bf846. 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/ES6709900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7674ec57d3100f0ad734f42a4b791b6a297448317cc332f39ea015ad84e397. 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/ES5107800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7674ec57d3100f0ad734f42a4b791b6a297448317cc332f39ea015ad84e397. 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/ES5107800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992c591c8cfa350dfe2766138696ce0f120171a743996190374704efd79bf8e6. 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/ES8242442601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13323aaec2b0d5dbb6763cb57ff61bb0461b830be54fcaa990561b4a4a7322db. 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/ES8242442608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbada7898f19b87bf0537cb1a2859c6f7b23edfdce5e4ec3c87e3c177fcb59bd4. 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/ES8242442610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfec4c66bda47edcdcb178c440b3f7a48708a2878955629671b07d26bfb3d1ef. 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/ES8242442611.
Mis Amigos Dónde Estarán - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd23e218e2e420fcebfa2b34deaab45debecc42b45313d14a3f04776ce5f7a64. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5021500462.
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 0x73ac70919eda7bbeed4c4881d76916b0949bcbe4e699ae9fda522450f232eae1. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES8242442602.
Que Hace Una Chica Como Tú En Un Sitio Como Éste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3acf109b1e0b97233bb663957816348343879e7ee080f8ca19f0bfbedea4ddb. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES8242442603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8503d1881a3b05fb7896c9042c6998806e2d179b94b5b86fbc76309549d974aa. 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/ES8242442604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200fff63193dde2cc00449d517df1df6e1f286c9c75240720347b6150bfc035. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/ES8242442606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd331b8522dd7d4146619c5bfdf98bc2158df3d98b13e678835b23447703d45e6. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES8242442607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f9cb63f0d579a367003a674ee2d3c6d5838f37283e522b6ec4321239ba3870. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES8242442605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae13d8a207bed8cda50f91258c5da4f13767e3e9d894069892a18eea6b16b9f3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES8242442609.