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 0x11dfa008d997c644ad5b37fa59823deb93ec58a6539ce07bbe7bc95e9365d312. 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/3ea25379-d318-463a-ba1b-5c6565206cf3.json and https://artists.proofprofile.net/proofs/artist/3ea25379-d318-463a-ba1b-5c6565206cf3.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 0x14187e2e8aeeb1dee321b295ac65fd1374d1a74d50b2a3adba1f50c259876e0e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US78L2121102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1d04c56993e54f949985e2439b9b8d3e0f1692d040b277feb1eed9b6699550. 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/US78L2121105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90533103d0f5f07ea111d7b6545f545ce9fa75d9ff883168666df425c27a505. 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/US78L2121106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd85e335cc1f4b5ae87093573e74929047bad47bf9216f188f7a44ed6a77ff00. 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/US78L2426603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50655cdce6dee362e050b5ede83c3c209a39646c9a5d085fb8b7d336aff6fd0e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US78L2426601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd85e335cc1f4b5ae87093573e74929047bad47bf9216f188f7a44ed6a77ff00. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US78L2426603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e71ff1344573e3ecb38af6a570b72a0c10f2c3bc3ff12d958e9e0071e6597. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US78L2427301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f440c91a489565e4745510046e779f0c3bd070e4a9351cebb59ca12e5928a6. 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/US78L2427302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48181b06840120436ce8dd7190ee96381abe596973ab8c5be064b6fe5779fea3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US78L2427304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fcd5455f9f05c5ce97b40ef7463fa0786d4eb3f4e7c9e71fb0d5f15bc786ba. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/US78L2427305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba48af13a5723682021bf67b391a1c36a458314b73071d08db68b83e5b3466b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/US78L2427308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f9beabfdbb952f94f0c804339d9e7932df257d2c389167aaf677063b853699. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US78L2427309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e49f88a5e837b32cdbab26502f9580cfda185948154413c55e1a1053696165. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/US78L2427313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df5219ddfe4ba93d47c5f3d52b032615f19371c19dda64988cc401e7eca283b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US78L2527804.
Touchtheplants Presents Sound Wonders: A Series of Epics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a97d3ff544d3144c02382996cabf307cda3c8e7c55dd618e9ebcf02c140d33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRIDO2112685.