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 0x0384efea1460c04e8629c87a41dc241dc58ac80dcd5b5f065077a7fc95353dd6. 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/e282db4a-6cb8-4c31-b558-70ed8a09d77c.json and https://artists.proofprofile.net/proofs/artist/e282db4a-6cb8-4c31-b558-70ed8a09d77c.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 0x6313af62fefba4c4db4459f8da038a573b8dc42bb419b6c1f2c70e3670c0c003. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USKO11200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd7ba28b023f0b40cac45989cdf2ba3eeb2651c5da1efae556e55f426336f0a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEA892000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc15d4d7462e7664f93713cf5f2c32fb2bf20df8ec80b83d0958d3036a3f61. 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/DEA892000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4691d8da80d63b68f59318741641640ff7b22ed7feebe76d220fedb1c1e5cde8. 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/DEA892000048.
The Good, the Bad and the Ugly: The Ecstacy of Gold
Once Upon a Time in America (Deborah's Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79306af67485a5eb7500995c6e8efd518a4d2b94c23b2d901e63ccf2459e4981. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEA892200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307bd74cbf21d70ac7b0610c7beb10f2b66885d713c9f2789022685cc857bc80. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/BRTG71800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78bcd504c7acfc7cfde4d142b7af93ec059841ff3ceab862fc35582b4db3d6a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DER412200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a61e1721bf7d1ce5f97b4f940adc22cb2559fe7be5602b771d23bcb40c7b73e. 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/USDBV1100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a28af0198cd9302cb53a99f79a950726707586bc22a5a55908d9e78242149. 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/USDBV1100156.
The Spirit Music Jamia : Dance Of The Infidel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d035e4316df89f684ad953cb6deb02603efd4af0201a5126a1990eb8fce0421. 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/FRZ020381740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e855dbfcaa2a77a66d4ac31d23d0b33bbad1c17327e441c3e87f000f930bc. 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/QZR8K2321702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9f758671250c4684b1e948a91ff462a049fa81ea36d0e8351f45a14d9eb5b. 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/QZR8K2421001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0518d675a2ed4ddc2e622be4d3dde755aa68fbbc2f8bb1f9dce43f871f3239. 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/QZR8K2421007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96b6c1fdf500d7ec9aa4ad4e40e1b3e6106b8dda6108486f5bacdaa2873d85. 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/JPF970700002.