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 0x2edf08c1e5a5c79ba586672bada292dc0dc182607c2e39f1482fe531a9df574c. 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/c35d5a19-c0c9-4bd0-845f-76e2a99f6080.json and https://artists.proofprofile.net/proofs/artist/c35d5a19-c0c9-4bd0-845f-76e2a99f6080.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 0xf8fa8bd88345075e811a21aa73bbc4a5a6e0420e7bbc4adb857caa9fe54d8675. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:03:43Z), 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/USA2P2029594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6804293282286e5769a1cbdb3fa838b49e997f21cb12f31dc983f99ce68e6. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:40Z), 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/QMDA62107746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6804293282286e5769a1cbdb3fa838b49e997f21cb12f31dc983f99ce68e6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QMDA62107746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbaa412586047c2fd9773cd85140b6f1792ed4938eec6058aed24b8222e6499. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:50Z), 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/QM6N22275605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873827e4cddf1bb8a0a977f343eae174b1bb466634fc15b41db757862cebf56. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMDA72210841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873827e4cddf1bb8a0a977f343eae174b1bb466634fc15b41db757862cebf56. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QMDA72210841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59126ff93ad4ae003b33ba45fa5f48c3aee702b30d559a41feea7339fe132e5. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GBRKQ2360700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a163cf44a8b4aae44dd41035e9640b57de590efdc414ed70ec42301928d90b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBRKQ2360715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f73c90bb8c2ad7be9d6ff2ff4ffccd4bd9f97b127eccd0671ec20f9ce3c64. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLQ8D2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449c73aef3514d4371d012fe20b712b610d2d2cc45e4ddd3286a52aed808c98e. 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/NLQ8D2102103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b34717d6a99505487261bb3d960b09f2950a7fca41ef29a19fcd45cbf7dc89. 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/NLQ8D2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d56622badf40a41e3918f4707ef6459ce3efea6123f2a9d790b788a7190dfc. 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/QZWDD2315438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5d6d4c6f21d4c69e9ad697c49dba3554848f158cf8d751e15e237e3eee9b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL9KQ2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53db76b4251e53c34c2880b41a5574300a40d6d6526f83a728b7a762273410e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL9KQ2300059.
PARTY (feat. Snoop Dogg) - Chris Burke Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e36a4d6990036ab3adae5a105ff57a276399392f1c73ee5c8d418e76b791a6. 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/ITG412100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f66024f106c5037c97387685f5408852cbe2480359fdc825b4b924c4483dd0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2132281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ac19601052671fcd563c331d904b2f8bb0edfb5c39351f2f4590fd7a161791. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA62148863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860245e0aeceaa0e300e0bb61f486386449a0ecdfb30e5821f88169f8db6f9db. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6P42178406.
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 0x283f1331f67a0ee18d9d371bbadbb84543f75926c1209272f3ceeecdd1bd1d76. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLQ8D2200482.