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 0x795c0604866d5657a8d8fff398b0762fa4977a75603046c4069ceff4aa7d4170. 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/f6826473-fb72-460a-9a0d-b223fc14f50d.json and https://artists.proofprofile.net/proofs/artist/f6826473-fb72-460a-9a0d-b223fc14f50d.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 0x4394587c58229271f3799940fb18c0335898c6f61ff6c38d34a8a8b418b0df6d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU1759623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b89baf6d46ee615c21dc9cc7ef5c25c56cd0d43246aeadeaedf6d40e2c08e2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBJX36116107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5979653a9e16d2e4f0c19d2a9990a89a9df4eff62709517ee9de5a01559fc7ef. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBJX36116110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf3a04a48cfb08626f36d2801d8413111d8a44cd651bb41832a588b474c889. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/UKSP41900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257aa6ee10196e423c0c45173e983e34780106e56789e826557d2b2c32e0c40e. 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/US83Z2005610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b630f42aeaa94e16cbc21f4ef14f2380879c07d3b40c5855b811edfecd3de8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UKSP42100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306569e7b3a9c2b4ae4e7e2a73fe4f041bfd7603a75cd59a5a36837f960b6b74. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UKSP42100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059557e0c913bf0b3c2d51fd7cb0fc5b6104eb3efbe9cef8fb5aec5332667193. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UKSP42200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc829048e1a296b98a8c79ebf1f94c8b806ce01ffc979848a6e5550dc970506. 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/UKSP42200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd8041ee6554c94fdf608e400ebd1e0d3993556fcb519613a37307d0f9c7c1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMFMG2317381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe342304486c8136ed06d12bfc721a2695de65f647368d794ab5baabf4f4c2a32. 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/QMFMG2355909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad275b2b077cd578f140cc0bb13e321331a2d7fcbe1dd9befa879374079e4f1. 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/QMDA72412913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b57eb019dc64f3759d735a6d571310526d7313531be82ebf255a8471033b7. 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/QMDA72412915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88fd2803ab7efae738e4166f7f545ca9586316828c240e713c6eb730b761c4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMDA72412916.
Children of the Future - Maga & Friends Compilation, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fa858b4e839a465010ee0252f4fa443a15d024fe5614cfe5138c3465ab3a5a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US83Z2023176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac22de5e74540081399c7d892008a5346c0e4984216355443eddfb313988f5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZ5FN1831935.
Balance Presents Sudbeat (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7810a6f1bebff8fe30db38d5e7903124777567a0fc1ac6434cca66a1712c65e. 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/AUXN21726378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fdea56eea5073760bb8aa3168ce02a68b7a33bc17905d4a5a09f95c7ba4e05. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/AUXN21703997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac01d8ec0372e20d245560fea32b46b6894dbf99e34df7d16941e6740fe008. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/UKSP41900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7898869bb9e58d056bdbc87fce231563335a2c947f964bfb6800cf94577188fd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBJX36116124.