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 0x0070a9ec10c7c34d32b923067ea3ded26ea06b1480232305c26acccbcc016db6. 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/133fa366-b130-4719-a788-a07907efaa40.json and https://artists.proofprofile.net/proofs/artist/133fa366-b130-4719-a788-a07907efaa40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Two Chords & the Truth (David Mrakpor Remix)
Two Chords & the Truth - David Mrakpor Remix
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 0x1aed13800ebae1fbe979f83f3eb4b115420646fb1b2d9372d044f946c3a9a694. 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/NZRI12201056.
Crisis & Opportunity, Vol.4 - Meditations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5dddb14c649fb0f92bdf104bfb805d8caf398e94bb97e585f4930d2af2644. 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/NZRI12202900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d1bf66e43d28787d19e98bac33fdb4cd35cd9bc96c07570762170515819940. 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/NZRI12200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5389d5e042016c49816242d91ce530565ddf9fa54beeba49feb69550d22809b. 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/NZRI12100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadac253615995b2b73f89cd27d478ce6478ddbdde5de3c483665ec211de0e07. 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/NZRI12100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f69ec8c71d9978f38b6957b89648f53afe0e9caf732f1482e9a6c373c9670. 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/NZRI12100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0c632b751133254acfe2995cc30546024283bab0de9479493784a928ce6dd. 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/NZRI12100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf41490e9b9164fdac3c327e9e0d37f3b4682f42bd352ac98639d8426dc58e6a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NZRI12004127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d4a45d8c16336fe6ad73f95005cec2aecfbff7db5da587c4518f87f6dd6f09. 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/NZRI12004128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe51cfd707a868075312156dbccaa1f4cd1a12745062009b2a24abb0a8583bb1. 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/NZRI12004129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b1dac8f5ab59cc81b57afbbc1b60b91912a9ab12d96daa02d96a2c71f6cf5. 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/NZRI12004130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303b0bd6930a8777fcc44c0e51fd7f94bb1de9f4c9198459043d50a45a50a98c. 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/NZRI12202903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0031fe0c68aa42483cfa12c6ac2edc204e15a38a164bc30a0b83c85e35c1888. 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/NZRI12202902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5dddb14c649fb0f92bdf104bfb805d8caf398e94bb97e585f4930d2af2644. 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/NZRI12202900.
When We Could Dance Together - Sampology Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c34ab2ea4e059e673e6c24e4e69845dc40e611654a4378f0e6c8fe08c47e5da. 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/NZRI12201366.
Two Chords & the Truth (Soho Radio Vinyl Sessions)
Two Chords & the Truth - Soho Radio Vinyl Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99489bd8f185b223170db0aef75596b118f9927287313530fef76b0a57657be. 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/FRIDO2210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f69ec8c71d9978f38b6957b89648f53afe0e9caf732f1482e9a6c373c9670. 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/NZRI12100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadac253615995b2b73f89cd27d478ce6478ddbdde5de3c483665ec211de0e07. 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/NZRI12100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0c632b751133254acfe2995cc30546024283bab0de9479493784a928ce6dd. 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/NZRI12100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bcfbecd4d36ee88e33c0495bdebab16daf5754400f02d238d8f0587358102a. 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/NZRI12100075.