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 0x198d3d885efb5c6fbfc35ad422a867f3af6b6a2a228ac2b343d65ca5f9ba2243. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e53a87be-8d36-4f95-8bf0-e5f910fcd25b.json and https://artists.proofprofile.net/proofs/artist/e53a87be-8d36-4f95-8bf0-e5f910fcd25b.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 0xb5eb414f60c412a426bcc5d3394bd03f50bb1fede4849de8ab260d8ad30967c6. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZTAS2476950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b6fd10661874312f8ed70764cb9ddf7356b53c2ffc562ef0df90d2d6a9cb6e. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZTAS2476951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109380899379a84c073636700d5834406053aa4f2291005f503efb8890f88745. 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/QZTAS2476952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f3b07b8e27809ee65a9fa80b936c2826715c9f75df9b91457d2b2120e8514a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZTAS2476953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e32e8c0214a750c0540daa17ed0299a758c0bc89621d0b9826dd2ed5d11ea0. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZPLS2420027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c047d161a484368e5e23e925e627e0f1c5453d2fb66cb067775ef4a574cd9ab. 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/QZTAS2476954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6103fb2478d806247288af39a9ce9b89306014a1557754ae1a873580932dba. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTAS2476955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c9103ed90521654668e9b40abfa0205d3734c841f5a1ac6c77c3b97fbf173. 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/QZTAS2476956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc42cff8a3a01f719ff76b1476db74124278f6bf199cb55118c0ee78e7d42f5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZTAS2476957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91c174b4b4669257778e0f562fd9592b9f94ffc419d040138e190a513d2fbc. 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/QZTAS2476958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e32e8c0214a750c0540daa17ed0299a758c0bc89621d0b9826dd2ed5d11ea0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZPLS2420027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87675fd91cf82f219b44ddd727697d9ef7c1d606612f695ffb816a90acbe0b7. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZNWQ2469787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e63258d72192b29bea7104e8c62ae54a5becf3a02df86b928a91672b4d77a. 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/QZFYZ2319350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b74daeeeb8623b66f747c04dea37ce264a0796edf7fd3e52aad9cac35a7cb7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZFYZ2319351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37268433d2c1e95198e59d13a0436d35de9edaa94b04de140140961f9fca0c3. 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/QZFYZ2319352.
My Mommy Dom Spit In My Mouth & Now I'm A Commie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fe5f6ecb1d9ad733a833c9eda29a9899f9622370e89f9ed4e6429c7b07a5d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2319353.