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 0x91f475b043bf00ffcb8e434d1f2aa0c1223657f7991ebe2d459617a5edb90ae6. 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/e064472b-4f0a-4020-b7e6-88d7c8adbb40.json and https://artists.proofprofile.net/proofs/artist/e064472b-4f0a-4020-b7e6-88d7c8adbb40.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 0x4d0f4547e6f7322424d2e587ee3fa9b31268a3641a082351faeaed2f411642d2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/MXF610600022.
Procedimientos para Llegar a un Común Acuerdo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5534fe81f78e255963242a5bee50aa799683c67beb4c78ee2437c15225f623c7. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/MXF610600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf01f9dba24a209408ebe8f1ecd2da07cd13c32b7012e14bc9d08c18254ffcad. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXF610600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425d1cdbfae3a9e024b0b99062d683e74783019083dc31e630ee0640fd997f6. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/MX1952000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859f096644d68a1b3c6682a7f0d7862a4e154eca796cdc28880fbd24696c0006. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXUM71300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d9ff8fc6af3241c2ed52d7a2f45ffa2b2cdeef34d6e69025effb085adeb159. 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/MXUM71300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c4548fd604b876d077612f1a05d088fc0350461553e7861ce5ec733f49b94a. 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/MXUM71300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1326df529275c6ed5c2b866caacfeab618c9d39b39f7a9ac5626e161fed56a30. 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/MXUM71300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79db60ea97ca43bec5ec01596263fa992e5631543643ec4f63606aa90e17d7e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXUM71300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c4548fd604b876d077612f1a05d088fc0350461553e7861ce5ec733f49b94a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXUM71300162.
Nos Vamos Juntos - Un Tributo A Las Canciones De Caifanes Y Jaguares
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281f01bbe547edb656c5417684c29cbcb6106812ac34854987e0a3996b96039. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MX1001000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281f01bbe547edb656c5417684c29cbcb6106812ac34854987e0a3996b96039. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX1001000005.
Nos Vamos Juntos - Un Tributo A Las Canciones De Caifanes Y Jaguares. Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281f01bbe547edb656c5417684c29cbcb6106812ac34854987e0a3996b96039. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MX1001000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b96223f61ac2943688c2f33892a1d7a9fc2f0b3464e26e19410e98aca03c066. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MXUM71300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bccd151a25ffb8ff99099df27124d01921e0642acda2c3b58500ca414686a53. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MXUM71300151.
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