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 0x5ed5f586bcf91482430ec81a812b50ab7c056c9481cc715dc5765f7c1ac9edd7. 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/e6ffbdae-28ad-4aad-ad08-c3834e18900b.json and https://artists.proofprofile.net/proofs/artist/e6ffbdae-28ad-4aad-ad08-c3834e18900b.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 0xdc91267ad0c6de54e36522877f1cb61af05935921e5e82eafac0a191dafa90c2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIP2488486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35bf8c13cf3e0365694aaefe5a450bd35ce88a1bc64b9e61ac66f2f0e4403c6. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/MXA3V2427233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43161c9a96085f9991d702d4807a36bfcd4c941e80be01a10b5891d0eda6fe9. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/MXA3V2427238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde7bf6c4afe3e6e7b1bd44bbd41f4ebcedd3e2df0634cd17d53472b1c31ca8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/MXA3V2429621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813018b8f3f9c8f223d6b6f55a18bc73dab20ec96b41a1c13f0584f1c0fa8f7d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXA3V2427243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64af00b6895f45cf05acb279b9b31fd37a16f81d48c8b3e1f431a7e50f266df1. 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/MXA3V2430650.
MONTAGEM MEGALOVANIA INSTRUMENTAL (SLOWED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f340e9667259045171de0835b69d56db9008efc84589ae08f38e0a0ba2b7c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/MXA3V2433878.
MONTAGEM MEGALOVANIA INSTRUMENTAL (SUPER SLOWED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c5f50b999803222359c26c96bd68feab2631a9f17e8c7c7ce344478830445. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MXA3V2433879.
MONTAGEM MEGALOVANIA INSTRUMENTAL (SPED UP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdbe16a031f523858bd6c912dcf59e84207b086279e8b4a7829d2d02ec8ed9e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MXA3V2433880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a54207114f2620666e515af163b0bf0fc46cbb9f031f25c693d052e7055da2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/MXA3V2434395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad347bc629eca6b24bce8c7aa10c83d61a8d015dab714b530847d111d61700ef. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/MXA3V2437324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311a08ea055a6d31932b2f7bb12fdfe38d929dac665309033381d21cb84c0e10. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXA3V2443735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0648ff33f9ea1449697cda3ee5073d7c19bb57ff38a53946f3c9d4f4326d09. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXA3V2457085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d25a6a3530c079023518cf0ac4053358c6e9d4bb04c34f560b25874fcb0389d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/MXA3V2457086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbb9286e355c06b83e12c818938e62eef96d5cbaae6642261e059a79059a85. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/MXA3V2457087.