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 0x08cafe2302f18c21d570c52779b15720ad14f893cf824c1c51a2370f1dbd9f2a. 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/9e409aa9-5f3b-4c28-b11c-b72d4ab866e2.json and https://artists.proofprofile.net/proofs/artist/9e409aa9-5f3b-4c28-b11c-b72d4ab866e2.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 0x0d0cb4779b1102581a19f15aeae075ae7b241d288b0b3cb72f7221c2dc4f18e2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR10S2523282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70dd5e754f2378d37e323fc63bfe3aefb03c072a1db6954dfe1223679ae7f3f. 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/FR10S2523283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d34a0f9343aed8be53aafb9b8b948d8d3526288ac0df3da68f8ab30a1efe24. 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/FR10S2523284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3fb6872ea0147e9973ca120832857df8bb783b8d33f510eca5b5e518abd24a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X42507596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef78ad6bb9b0b1d327083739abd7fb1157360443f34f64538a79fa6212719ff. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR2X42522261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb326b15a7e70a4c1079418ed75808f461424841de1e00cf09b13b99ac5b232. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FR59R2546372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3070c8f893802576eeaec81640616d067525dd16cf881f5e935e1565d3713663. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR59R2546373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723e2732813b5b37b00fbbb073729f95ec2e65eb824691ecfdf241b59bf54186. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:47:42Z), 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/CA5KR2527232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4d3988f95827164006432d44342af89a9f10ec5800bfd7d48f5eb87c79f2a3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR2527234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96213593ba78b82d8d858cea52af2720b6c790a7c21867f138fa8e163c42e153. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:35Z), 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/FRX282588218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28f6bcfbc97c0f47e0accc0ed40209749c7beea55f3244a2a35f727b20fb42. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX282588220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31054a2c16e9296a495c210bcb366bfd299852c5c357063dc3f4435b410699f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX762567319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247d922924a868c88753fe0fb14d58bdfec9d0a48d6b1122bdcda75bdf9af40. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMDA72540917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c58be73484979132a70432a0375f7ce8598dec46105d448f96bb3bf7d5d9bf. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QMDA72540920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0dd9e6e95b35bf07c7f50bab2dd2f1f1983386aa7cef741e4728d5727e24b6. 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/QMDA72540919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8420cc101c1f65ebc101ec470b05f6c7d0d0cc0561fd801f7a51df88fd54622. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DGA052506487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c142b3b51d75801718d0dc813b152f0dc0cc6044b74253f6719ec71b8c1846. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:11:15Z), 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/DGA052506488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda02de78991481e0119914124d23fc5a84a12317cd3ad8c477161d1b2d06b945. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DGA052506489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b424671ee5d4487d0c9ba0a765cd3e1a1488e44fcefd9412c34103408677395. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA052506490.