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 0xecbaacb674e7908cd71014e53bff30fb26d6d2e56b686bc6b852dea1677da8f9. 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/d1920127-8b8d-447e-8cae-edc9705e26bf.json and https://artists.proofprofile.net/proofs/artist/d1920127-8b8d-447e-8cae-edc9705e26bf.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 0xe7a55715cb82a1c75812775648c0b053aea1477b32bdfdc9890ec4e4674467dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2410054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a13b1bf8cd9b8d31ec89252669866ee7a6c92aac5d108aac4a8a5b11ba389. 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/CA5KR2410055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf978cc6446b11b1cfbd0459d692dcf79d229ffd61f761c026bff1d89b82478b6. 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/QZG2X2407441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c22764c2ef57ef1987e2b26357ea706326c36b0ec66c2ba90aec92b75d276c4. 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/CA5KR2400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e17a3402ec664f057095bfe0f4bf2b32c4cb3cb64ca587a605c0c6a8331c532. 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/NLRD52316730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18352b777be66509ab9f0365c6bee6a6d83244245c905059834dbdb71021e453. 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/BXWGB2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ef02d4f92e85c1859811160987b06fd66b3addb6e9ad290ce683e454e48d2b. 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/GBJX32232021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81223326b9f2c83a9589720e513eba2ba9cf8b96caf79ddcf503cc3dd9ea0ad6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452235688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed2afb3166edeee1798d0dd3a74a163d91d429c1c0980625918150203775eae. 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/FR96X2296139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34e790ad28e3852648d6243e3cf01d972043f2cef97b66a243feb6892f83056. 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/SE4MF2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ccda2f46c40f958fcaab8d9c50df82c0b8c9cb0ae8e570c322c472fec2f3d. 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/GBKQU2239772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf229854d90cb1619688e73b042d250d5dd1f433b617f12cc104dc542f6b8f460. 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/CA5KR2221813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16af4e649252c85ac27aad307775fe8055eb927f9aa064b3ca710ff50d79bc57. 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/FRX872184117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c7d33792a45c19e1bdb68bae64a30c7a044b234d196ad931cb9fe2524f5901. 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/ITSV22100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b4f2f2e6255f58fb8a79779a5a7a8e9a45c6a8827789c539e26f98e128d239. 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/ESA011851421.
Armonia Universal Mixed by Carlos Salazar & Carlos Bonna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c69d8bd509f659231ba35d188ae35386be9e152d5feb25162a45207efeee9ba. 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/CA5KR2125500.