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 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 0x309f3ff92c422af9e4d82d6d279f3a8101eefb10cb1f2449c43196f3d07cc927. 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/b632259d-dd8e-48b3-a741-1512cc3f97f4.json and https://artists.proofprofile.net/proofs/artist/b632259d-dd8e-48b3-a741-1512cc3f97f4.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 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 0xe03c30083678223bc528cb71a0c4f5f0795739542ce4e60ff59caf4f7ce57d8d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKQD91400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0dd1d7afe0b31cda084e9ad7a2490b001a512412db9d4a1caf3d6e694c84be. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DKQD91700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634fa6afe34594d9a67ed733d6ec4900341eb644de643eb46fb0f93986e82ade. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DKQD91700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3d40a3f1532064d7f8b9e11ade9ce8f554a7b146dcaf66648d28d65a36ad2c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DKQD91700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377e1afc669f9b82cf4cde7c735857a5b03d936fdd9920117f6c04524402be8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DKQD91700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751efbf5ec151f95ef86eaea72bb2a8463b46a893194c47547a3404f6832af7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DKQD91700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6900c7ce52a75cd340cb676fd3bebc9c5dc0899e9ce8722c3677d3f5036de22e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DKQD91700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e9aeb1ca18c594f05790852f40a6845e3e50afd20a7a1de2c486b742af55a8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR96X2109875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b5d30817d572c1100260e8e1d6371af85c47cc2ce8774a24a38752c13ef0c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2109873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678e94f15c47e33921f43e527c9e7a6bc73da767b803bd86c852db40d4310cfb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X2109874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c4b7c96295a8fb59d08e652846ab1c3c8513c1d9928bdb016364c7611d80e9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR96X2109876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5c1dac9cff2073f70899dabfb594c9ada87f33f7ffcb5db8280a8b84347a0c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X2109877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd77a34bf495d41f8fad27c768ef797320e89a87a6180326cf0e29c6ebd3ad. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZAKB2436832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813929aad03856dfc2e02c13e1bdf6c0a25bf70af1fa3fed75de07057b217499. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAKB2458076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e874dbb7178cd683ae25a5d16c10d27ab2973f16e54e6c7ae0b1966fe40b7f8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FREW42500005.
Living Like There's No Tomorrow, But Killing Yourself In The Process
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061c10a8d15f6f9997417ce6584e3f6855b3bf12983a22e24da04da01e75df0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM4TX2347868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061c10a8d15f6f9997417ce6584e3f6855b3bf12983a22e24da04da01e75df0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM4TX2347868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473fb0a1bf9f70efee7c87a0f28e860a613437bad80020572366fe9586e374c. 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/DEEC31810434.
Gilles Peterson Presents: Brownswood Bubblers Twelve, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377e1afc669f9b82cf4cde7c735857a5b03d936fdd9920117f6c04524402be8. 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/DKQD91700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9730fcb6fafd012f217a634eaf603c34658815bc5311c186d1626f859d417eea. 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/FR10S2035156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9730fcb6fafd012f217a634eaf603c34658815bc5311c186d1626f859d417eea. 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/FR10S2035156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e623cd91fd85c1a9336749426248d02d687fdca0caacb0b6a4ea648d88c63c5. 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/DGA0M2366756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3faedd5fa8cc8fc0861de3be179f3260fe2e061235e4485a79e52fcf005d0. 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/FRX201702239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c5ba779e828001a97af6655de2c5654100e3c98afb7a21629ee748c3006a2. 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/DEVF11700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c5ba779e828001a97af6655de2c5654100e3c98afb7a21629ee748c3006a2. 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/DEVF11700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7708ca9b7b04c8fe6686e8bf18546ce55cc05fadf0fc933279b2dd56a7d7782c. 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/DEVF11800465.