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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e42f99cd9688ef120a7d1330fbf5f64ba21dbe232b95c42bbd74f5e50512300. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22d8874a-8757-4b30-b987-84b49aa5ed8d.json and https://artists.proofprofile.net/proofs/artist/22d8874a-8757-4b30-b987-84b49aa5ed8d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b209b5be78b45911379e8555b1bc5ab4f6ab1d478e5bfb4222449de959f03a6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX202073275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc350b9f5bddac6fb2f7508c9216fb3a57a169fc70e704138e3ce50f2f051057. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR26V2014729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7352329ecbf341bd78325272dba0a218531b4965d10f52602a4096602b410508. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR59R2120717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb856f818dd62c029b8adec6ea5bb2e82e5d45391188e211eb0d08e1afe26cf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/RUA1D2200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e8472c7a344cedcb652937e980143dc231e42d2cba23a8d6865320bcc69f31. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2225919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9a726a9b12847ef01df8541b1bc6bc436073e8439f71071a3b9a6044b06e82. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2267038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ef893e4e716eb796bc43598eae02255051b03295e95554c073771db3d180aa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2267039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2a10f17c98ed673ef7ffcd2e14128c79d68a624326fb9ff81f596e0e189387. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/DGA072371354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a48c40e8cdd595a5d95b6069322c09bcf8ca26f2698e8abe8be2c3749c2b9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA072456843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c52db8a4fc77cf5575d07ab393fcb5946276317da6a427e9da782e392efb3. 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/DGA0R2450704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffeefe4dfa2f73204310d0f8e1de5c62c2dbc4f4269846bd14cf90a91e6b4b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:42:02Z), 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/RUAGW2507654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fadedf657fd54a2a68e5c893869d20d215e3c893e791fb10dd97334ce4da71. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/RUAGW2507063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d99b87e40fe4d5793b4afed6cd5127387369ab4891a3ba5d5a535e53193ec. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUAGW2507655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065812ae010556b1eca19169622b6914a14e6ba96ab1b4ff4bbc87f6bf7bee68. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUAGW2507657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eb8bcb6b588c55215ccd472264894cf176de810f7f3685334632910b6cf759. 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/RUAGW2507659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73bab0eb6563d8ed74b553cea0f9ed44230180acc09a49795a45701f746c398. 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/RUAGW2507661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c91ec043e282ca1ea5072b3ec9534812a8d9e8033202bd0add6af33a79fc742. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGW2507662.