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 0xaa7cd7a5884ab848c0ef3417e28eeff66617923b90ea0e72cbfffe9d89f95d75. 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/3096b1ae-6124-4772-baf3-c63268dd5ef8.json and https://artists.proofprofile.net/proofs/artist/3096b1ae-6124-4772-baf3-c63268dd5ef8.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 0x950a0c34501b2272140d72e035c43fb62071d4a0c24e9bd692ab8bef62895404. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX8LD2464019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5f886f4049b6c3cda3fafc981c61e0cc87ad9384b5b0f5d81302816d9dc656. 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/GX8LD2409067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af0832ee0fdaeb79d59afbccb9a1fb35a699bbb8951e13b2a4744a118e2e479. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GX8LE2443634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26b44374c4c4f050982202078d2ebb4d312bb182585d9a744e7e59de224de52. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GX38U2446452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2374b94223e03c007fbfdb0d4b8063d6544086ebc8b19a788b3ebc2d32efe0d. 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/GX38U2495007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1e66805472a0d86cb4794dc553c26dbc851205d00e6cfd48b1f1d0ef54839. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX3HH2430099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c4e6cfa068b6799e19714e8c654d541f5a51de2e6ca1063db69aeb62ab601. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GX4R52433721.
We Found Love x Teenage Dream (8D Audio)
We Found Love x Teenage Dream - 8D Audio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed02b172231c17342e17615cfd8ec727a8f202a437154a09b3a7a9ad37c4a52. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX4R52494968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a614e244ee9a07da4922e1ec78df398f443f476d7f07251542140e854327d8d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX5MX2475926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b162073784d42e9d3c12e632386496fa906942275400cef6a2dcb775bae70. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GX5MX2406985.
No Flockin' x Sweater Weather (8D Audio)
No Flockin' x Sweater Weather - 8D Audio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768344b7fb59e3302e6807000477ffa58dd319b38c92c351c53938272353e394. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GXBDS2411956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac42fbd7ea4c3486cf918ed7cb6563cb964a4fbb9169740f86be89c63aae08a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GXBDS2468906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d59cb3e5a0424913b2242b589de35a4b4d5b519cf5af7c7860ebd4a540fe70e. 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/GXBDS2491918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199045f4090069cc5f4e155a870226c608af0a01eddac0d8a30b51bb8f081bbb. 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/GXBDS2422704.
Die With A Smile x Glimpse of Us (8D Audio)
Die With A Smile x Glimpse of Us - 8D Audio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55dc55f7eb2ce7307b060f4928b608957655046798b0c867b874f27f9e7196. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GX5MY2442367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d97ca1ba2a948ed4d66842556f6911345facd2f67175135a591a83d934013a1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/GXESV2405236.