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 0x9dc09af59a7a048b4ebfd574d6c120bf9a62cff9ff50f9629d78e5bc532227fd. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/454f94b0-9512-4a34-a91a-ce482a19cbbc.json and https://artists.proofprofile.net/proofs/artist/454f94b0-9512-4a34-a91a-ce482a19cbbc.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 0x7760d4d503c79ab69e8036bb78e766b1a1092ecf530bdac873486aad5b63b826. 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/SEWDJ1100102.
Soon You'll Be Gone (feat. Sven Zetterberg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf628a2d7b4f4cfed184be742c8b6bc9a928e8d660a0a23680a788aa50965292e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEWDJ1100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b2af9a97f92729775dec818f596c9b0475f19ff6183858685d4cf301824bfe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEWDJ1100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab9fb21feb5121a1397dc02d9b7c5223f814e9bcaed7d007e5eb59fb867f80. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEWDJ1100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01423d9d2d6ef2cac26ef2f79fa3651bf5c8403193eedd4aca13cf61c364bf. 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/SEWDJ1100113.
Knocking On The Backside (feat. Mike Sanchez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa225b92ad6c0db885175246ab06146ea8242a350b5a15e460c65248c049fb51a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/SEWDJ1100103.
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 0xb57368ec00d62f1ffc6573c3db098aa85bf76baf19653460d5ded23cb71d11a9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SEWDJ1100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37557286e6d1ec73369b9d7904ea681b5a257ee4fc7bad7da1f005036eea1c89. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/SEWDJ1100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad86cae0ba9932661b794983ce001eab3e5c2a3a46aba51c488ab5e7dc0a3425. 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/SEWDJ1100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74601b526f637d75c03a976875e251292ae17104ae3288e6db7421b43599d06b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SEWDJ1100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf585f9e72a0f272553b6425d4bd32d75476bb3e213c8a70aa5e1cc0f689c968. 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/SEWDJ1100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265d53b8ce7b6b7f9d766410d457c7057af37bdf058c86698b7df390888f11aa. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/SEWDJ1100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ea865a6d4db2f0d8402142547364cbe92d648d3f40da5437a533c55d3b43b7. 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/SEWDJ1100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d87cc9ac304548d992f3881117876e7e2f5f28eacdb3cd2fc9339cd0cbd029. 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/SEWDJ1100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb799e8e673ba84f82e64ac56f3a423589ee67d3ff5a20f75a5495acf0854264c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ES67C1600188.
Sweet Soul & Deep Blues with James King and Anders Lewén
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca363b489b092c8c1090392056af9870a7f8b71c27faa3331ec2547806c08722. 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/UK7GZ1509210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd848a6007466fd11dbea4cd1526d571472b188072fffbd143a399163ed3d6e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK7GZ1406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ce20db949c3d2bb78aa5ad5e8dd5573367e60b815fe83b7a0bf6c458fe70aa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UK7GZ1406606.