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 0xd1de8a38c08216a6bfa931558103a8ff7e329f6e1fd8d678cabf2d74e33568e5. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21f60a24-c515-4ae0-8764-90a7e0e4647d.json and https://artists.proofprofile.net/proofs/artist/21f60a24-c515-4ae0-8764-90a7e0e4647d.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 0x758483146f57ea3305ecda44ff27057f9b81100808f126078e4d209ce369dbc3. 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/SEVZM1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b980283e0fce751ce4b9d65cf288024b90d081fc4a8dbbb68eb6e4404fbb4f4. 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/SEVZM1500202.
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 0xcabf962d532d16851ce15a1e352314a6a1f9da48e923243c552c8650ed439233. 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/SEVZM1000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa174238b550cc6de1877132fc3525b22d797b4feb79a89f0f99c968c5159e006. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEVZM1000207.
Give Me the Queen (Swedish Royal Wedding Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0630080f5ba7a9dfca25fbd37f1dd3f9b2c3397ee16e662c6f748f5ed1cc65d8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SEVZM1000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b58eab203a8e07cb3d3d5cc19d1d853b76a547875cc50f6a986fe5798f60765. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEVZM0700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a9a3651d1a592016270ae5582698f0c715d80c40ccbcdbe83060e56d547072. 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/SEVZM0700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7317a98426950f207b2f7a45a5ca886150b31f1bed14704cbb465085ddf9803. 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/SEVZM0700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13db705beffca7339e2da6f00aab49d3235e68972217e2b11ca0c9b607fb142. 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/SEVZM0700107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022e16e9a538c09d5566d36b8fb9c2515ea6022e5a2c103fa79c254daacf36d5. 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/SEVZM0700110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310d26293579b43d1a48e2cd32247c7869d365cedf13b8a8d73a1ec313f6b48d. 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/SEVZM0700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2920c240d78c50a050d7ed7ab7d51b01609bd4a269fc784b5febb95b0c29d5b1. 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/SEVZM0700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7350fd56832612c1b1e6aad2503044d65bb96265b2e107c928d560cc9717db. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/SEVZM0700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd518001389db432379ea3c4f6bfc154e47c4f883fee672d9e1bc06a00f381323. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SEVZM0700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938cdcc52becc08f210fb1a16ad10bb788bb74f1b97979bd2ec517218a6a74ee. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEVZM0700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32907f3bef6c3a57987b243f0649ca48d3858ab55541f317b151f91ad20b7a47. 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/SEVZM0300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2aa52cd6ae929c8d2bc75e60dde02f8112ee55563d64fcd0b963218f590fa3. 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/SEVZM0300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18119a53e7402f291ee59e70c32926217b876fa206d9ddc4e09ed84975c6aecc. 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/SEVZM0300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bb328c5e191d34b8df7eecc5e38c3461c5ed04f54df8a3c328ee476259a7e7. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/SEVZM0300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1006281eb8d9268bb326f65451be7278cda9136f6b93ed2e874da7d54612dd88. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEVZM0300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860713d99e4b6c63e109e9ce9dd114f5de79ed05d1e5dcc94f395a2f8db7223b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SEVZM0300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f593bc2a7a4d5de044254730de38fb00a8971c76aa1a216fe764d32ff146da5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/SEVZM0300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825bd47f542acf55dedd9f1a384e70dc79e7a44e8483f88a708a0090176c0d99. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SEVZM0300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ca4f1372e328b69b74f7cea07ad49ba5a623a06fce6ff9ed614f93ad7d6b86. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEVZM0300209.