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 0x40f7f8854a28429f11ebd7907258960626b679273edbbd9590d566b5b4020a50. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f1b3f80-a455-4ea6-a9e4-23414bf66769.json and https://artists.proofprofile.net/proofs/artist/7f1b3f80-a455-4ea6-a9e4-23414bf66769.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Papillon (On The Wings Of The Butterfly)
Narada Decade (The Anniversary Collection)
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 0x93dcabed2e463824ddeefb0a0e2db26e155688e1b1f3f137395d20083a3d0e1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNA19312005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1e7cdf5374fa9880c1bd93e2e9e8795507cf55b2d6d6f4d777a4a9dec164ef. 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/USNA19113862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b3eec92e5ed1fb5090da9c7baf0d59aa5722f9b492e9c9462c1c9d67ae1220. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USNA19113865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd93abc25c492966f3b5b61af496f09907bef4ac7f52fd1b9e9806f931db593. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USNA19113866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cd466bb9216183ecf872719e06397d7d92cf4230af612752a6214c6cbb8859. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USNA19113868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1e4fc63fd68891b42d98e6310d9cdb29e3b24c2e582d307e1d47a7e504d23. 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/USNA19113870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167e4a0800719c2b31249f374e268c70eac45e7bea37bc277ea42165008c294e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USNA19113873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12f4f3939e52ef9df3705fbeb4ffc8dfb6e329763a6a5bab3ff76faedcc1a5b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USNA19113877.
Visionary - The Ultimate David Arkenstone Narada Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a6dbcafb949b32b631e4de4896192fb7a192cc31b8750897988c169b468718. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USNA10118569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49f199c8fd54c5e664be8a2b670cc168489bd163d7061e5f4cfdba2a0340b56. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USNA10118577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218de876a99ee50223ac31277cfe7f32383c9da6c4d9ddf08fa6eb12a143c32. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USNA19113863.
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 0x611672cc3712f5ed567181fd41bdee5e6eea7d2881703ec4061e2942f97a9793. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USNA19113864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb84b65c4fefafa9eb1bf7a99f89559fd097f2094a855015be731491edb46dd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USNA19113867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8337e915ff07a6b7d176558456758bfb2a621392666c4b83b125d1f924d094. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USNA19113869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9fc2a8c4920a9e002fa16bf9c205c8fcc4b595df9574a06be5ce11b4157643. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USNA19113871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ee61fbe1ff3d1d3283ded69feddd78ccd540fa6ca940b05f75d7b0400778ae. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USNA19113872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fda2164ef2927973db70fb9132c02c6ba9b5d7301423313d39013478132560. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USNA19113874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf95de705ec0603b008d9351cb6a7821548e45c1c64e485d154be2b2da0a3e7. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USNA19113875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ab3602587116de619937ea42ae1ca12cfa462deefd63bd42c36ed85dedb18f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USNA19113876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcce1ddb21a870def55d755bb6868f2cda09122b2a483c0099ada9c94b790dd. 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/USNA10118576.