1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8cbe0a6d9462cd66f760cf5cdcd2333c64599a2bc3165a0453389a24141a17f4. 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/e596d10a-ca59-440a-8f76-ef88edbb8a22.json and https://artists.proofprofile.net/proofs/artist/e596d10a-ca59-440a-8f76-ef88edbb8a22.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 → block OTSBitcoinBlock must exist at that height 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 0xeccc33a654caae8c62036cb9188080ed5c477941ecf003021bf892497fe483f7. 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/CA5KR2030211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28269b2bd90e21591a84c94570aa3b496123863322e2a4017ccfb9cb936b63f5. 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/CA5KR2030212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e89a5dadfd041a5024380d687b52aee3a451769491669212917bbf94a8e745. 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/CA5KR2030214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ffa16a5bbf373facee16770b93416005d9c8cea4c2c89a17c19899e035571b. 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/CA5KR2030217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612e2db1e5a77552da5fdf1b36f655a59569d72ae0f39b7367c2892fbd6565bf. 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/CA5KR2030218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed7c45b775ea8a434c557f23d96165bcf0058fedc9ec9ea192b96734bcbdc6c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2030222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf20dcdd8dfdd1f175a24df2fc03d6d96bb22fe20627a18f71c6308791f0b76. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b073808785558451dcc598737c1b5ccb0db0a502b328cf5af01d81d70590acf. 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/CA5KR2030225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b56e0e6a7c13dae242df6e13677295e243a0778ca081c0174e26af761f5693. 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/CA5KR2030227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f4c809e97de1d680e23d7670659ea18e01ba5ab59b2fc88bf6d9b62273a5b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637441bd1bb0b76796934794c2f141ee0b29c94bec19c7bd222986298ec73884. 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/CA5KR2030230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f0df41f8e87aa2887b255eed842329321916570dfa060642a1ce5d2ff343c. 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/CA5KR2030235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bd08aac2ea3674df27a68dce89a9ad318ec8323c20a39d278445d4daccc7a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aca6f5220d2e393896acabe9be909334d57b770f4b2d587f7907bce31106cba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2030239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d2f4e9f111901e25ba1eb3c8a77d1ae7ea1f89840277326dd1fbc5213fa91c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA5KR2030240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ded1bbd4c8da5b3e8fde1cdc96e70290e62221788258716c6998cf53f20d5c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf48d7fd8b47d26f98f3758daef226110ddf569824a871dd94ace6a4e0fc2c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb698a7918bf678b2291f47f67d5ad5e6e85fa6d482b11e53ba36de37b0008a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06f441f42a21cc29b8bc86300f896c280cf26881d05f930e5134d74f819bfa7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854743ecd9365affbb533818085d49cefb9a3f6be50d413f86a314e9f1fcc7c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2030248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95df84b3c8941754bdf4dfb58578f68dc51f3ae6805391947651647aa8144606. 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/CA5KR2030250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009d0f711eced76dbcca060588ffe13446b186c4a1295292d151a9c85de3cbe5. 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/CA5KR2014126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c633805c2b2d8cea373a43fc62a1f72baad7fe4fcaff43a0d0b7505a96d2316. 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/CA5KR2031888.