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 0x12f8884cda580702a2b9147002a728fb8d634ac9aebbe6348f2f630528223133. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26b92870-ca91-42ba-8f3a-09a9b3bc87cd.json and https://artists.proofprofile.net/proofs/artist/26b92870-ca91-42ba-8f3a-09a9b3bc87cd.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 0x86c42efbc2bc9332208921c78d7ba94c6fc192fe1ad78bc82a1350bc71653fdc. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM4TW2026305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa259f670f3234bccb40abd9a8fc229a47f0f8d1acabb147726f2b31544356f35. 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/QM4TW2026660.
Gargolas 2: El Nuevo Comando Segundo Ataque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e2324354b306dfb40d0745ce44a2d4f87640158b2e5d55b9a551946a73f1f2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TW2029697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9607492a8882e4a0fba768ae6dedbf16607c42f51e2ace006c8c255476bcf4. 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/QM4TW2029709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcdc8cc4dfb5373be8ba33e384c74beeb05e5dbd35d0f51a1e2a6dd828f94ce. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM4TW2026959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1709b05b68eceef4a24e0e676e0e262b736500a79c665df7710608f0fa8cd387. 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/TCACO1635591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc1c49bb8e7af486862d8b75c0e4b0a5127c016aa66c24b5d7a01002f936baf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCACO1635595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71157c977447c725342b6cd7c93befcb0c10446a08a7f6f28693658963d768d6. 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/QM6P42334723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35613cce3b52a98813fb361b9082fb1c0b6e1bb2daa9b3df3e154daf484f17e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCAEJ1983752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdeb5a166310f7de4f0032b9292f05e137205f10a12c047f2a11bee18a49803. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCAEJ1984049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f306eeddbebf0f33e194db4ed5b0274f2e72a218343933e6a82ac5051f91841. 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/TCAEJ1911695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd7c5f9b3257b3c7ef0611c3a7c924342a68fb2a684980681921d4dbd6134dc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAEJ1911741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a89dc8b064cdaf82fea52fd6b0064d30b655e3f79e2ea4cd88b7fae16990f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/TCAEJ1920666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdaaf97c40b4570ad07f3b42caebce0eff109efda1405296b8ed4fbcb5e6c1d. 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/TCAEJ1920674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a4438a33f9f7cb36faf865522171623a8b2634c55f9a6e33f7be79b365d867. 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/TCAEJ1920681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe399b53ee5e4298d1a6a76844b7c4fa56ffc9bd2bbb73129235bc34cfbf7bb0. 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/TCAEJ1920690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91899ed3187c9ae0081b7b91c0110630bf3987da33ccbf333286773bbfef0092. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEJ1920768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d46e8e6b0067d27e6307de61eccf89ab915b7435c013857e173f3a431ebd04. 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/TCAEJ1920777.