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 0x5d526ad303302ea68ea1f6a7e9981648ea8372168677e66612481a77778d4469. 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/c4753091-b6b8-466d-8337-56bfa5dc3463.json and https://artists.proofprofile.net/proofs/artist/c4753091-b6b8-466d-8337-56bfa5dc3463.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
we stole a ps5 at self check out at the walmart
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 0xf19c5a1ad49b0701d041d49b568d7af1882af6a4e4b12d5cd50c84e2fdacce53. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:31:41Z), 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/QZNWU2241374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1301bc28e99ac370faceaef86a97fd8d96f0c2c9c9134eb0c5e7f0d9447ef15b. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:14Z), 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/QZPLR2334665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb674d134d93db5ccde1e3c34e4b75769139f58eb35d9bc4ea906cfeaa27c87f4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:22Z), 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/QZNWQ2453834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b57bff8be322532b52a2c71709431671306f47bed35b8086387cee2534d44. 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/QZFZ42559591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc9c00d5b60331b7246c4d7b34e740d0aafe6ba2a75428cd36fa5c71b8d8cd6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:18:28Z), 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/QZK6Q2528793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4648b9713a1b20b5109e62f5fab4640c611b8ac6f74d6a8f542349452d472e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6Q2506297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cb0f593a5c76fd7e425d1f5769767a45385bacac49f92458d6b33128da13b7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:56Z), 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/QZPLR2530989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db76c2618240416eef352cfe564de9fd1fb52fe73053a6fb373a37c2fb8a186. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:41:39Z), 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/QZTBD2538770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab9a27f36aa17913b2f30a6383ad6f50824ffa7038ed8cf624b108fd25eb285. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6N2433555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f513dc3e79368d1d3f2c1b9212a1d3f04b5ea1a7e311d22972dcc5a240fc0e. 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/QZRP42509923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eeffd053b562bc04597dba0297228f95468794a2cecf0efffc4aedd135eb9b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZES82412363.
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 0xe8d98406def9ba9674e044f7762aead1c90741f4857f12efc8a618d338eefeda. 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/QZFZ72463080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570d57e82be3cc4eeb7267908a3bf7e999fe9928ea4bad25f8e6d24afeb6df26. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZNWW2323554.