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 0xffbc424e72b1783794f54ce109af8908ca669897c9b37e0aa2391513e3be2b53. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc6a9024-e1b2-4376-a317-d1cc1ebf4aac.json and https://artists.proofprofile.net/proofs/artist/fc6a9024-e1b2-4376-a317-d1cc1ebf4aac.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 0x176c4c33c6197ccb4f575bfd215fd6ba40290ce811789740cf0f06715273b347. 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/DEG930990100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebcad1aa8756dfac20ed37607469388b78032aad0f28bf94539cab8a9a119d4. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:56:58Z), 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/DEG930990101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aa247ea86fe9e937f7fe201304b925f9bc045eaf87f46d82460047bb02d368. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEG930990102.
Hupendi Muziki Wangu (You Don't Like My Music?)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e549940b3f0b67389b97c3f4c6c9f280206a286a863590a9b7385c7aba78484. 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/USNRS0721923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9603fff3dd4ff6724c9273c7e172a992a4d04cbaf8c48714a0240e3d7fc0949f. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/DEG930990103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a97f3d7d00a3abe45ce2286dc3179d351ffbacd4290f7a67d455ce668fc970. 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/USBEN0990001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa342dd804bbe8aee436dfbfa4e8eee323700139387229d88f6142d9cfca1cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEG930990104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abaeffe614d2978330ec0f46646a4b847404d860e70a72861dabc321fbe2222. 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/USBEN0990002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad157bc118d5ad739637d956b7df0140c88d289de4c974344352d6779ded564c. 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/GBEQT0090477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389e47d8d34b8e79af5f462c8de4c1e9839e72109151d69e404ef0f504445b33. 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/DEG930990106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c29d5f552d5507fb77209537c6a3240cef2c91187fda049e0b69ab0348497b5. 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/DEG930990107.
Let Me Be Your Fantasy (Dr. Packer Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7455b7f5b8a77c6d5efd83201b6752087dc627b660bf1bb6850b97507b74ccb1. 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/GBPKF2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3a45160d6c748486f66c98d9e10c78af9a2712137d5c6fb7c469607ed7ec5. 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/GBPKF2000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88cc53cfbfc8f9cb97e068da9e69b67d16aa79198ba22dbe06d266ca4ab5660. 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/GBPKF2000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e79cf2ebb6c8a0ad0be10735493f876ed431e74c9f23aebdbe471c818ac2d9. 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/GBPKF2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fb356eeb053d22ede46c19cb7885cbd42f8e99111285a4d3a0b4c9da151fd1. 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/GBPKF2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f41b9a00deb4bff5eb7661f3dc1e91f5421bc9179341226d0d09c6eae3445. 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/GBPKF2000039.