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 0x7bf2fe7bcd6859c01b6c03f951dd6133f90134abb7aa2f76739cd0b6b59aa77d. 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/11975108-e273-4245-b5e6-9bb6b718363f.json and https://artists.proofprofile.net/proofs/artist/11975108-e273-4245-b5e6-9bb6b718363f.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 0x3f0f0e253a15b272a4d410b50ecf419fedd4e3c7f446c8e8629bf261d1c0b917. 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/TCADP1835326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf49882f0cd86d7195701de3451e3237ea63288975f199673f003e8d36394d. 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/TCAFH2035820.
Super Jew Anthem -Dedication to Sly Young
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdb30fc2f2868eba2d99d9d3e70412f2804e3e3c3eaf7baf420e0eb1d77402b. 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/TCAFH2035944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa193596eee30fe5a5fd95662ff1eea85c7ec496806d998075ce2b9650baace52. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAFH2036056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a765553393362aba143ecce2925a484f0493f0cbd7b63226d88527e36f9dd6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFH2036131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce57cea6d742b84ac783c74f773b00fb77b2c47c42cd8f285ab05cadac759bd3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ42220541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7434b783deb6f831da111e39b7149e3966b8b73ef23662a72bfc143ca1fa74. 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/QZHNB2281428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116a0ef3e3cdf5185d4651f956f96996aea02be54a0e2d02ff38b59fabe89fe. 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/QZES92231532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0e91c38fb6a078e012780cfc4c9ad6c2396a794fba14f353a77554e3e91db. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZK6H2114810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd120513bfb8dbd7f23b3d0377a69d3e106b0c86d0593bc53c188ba8991e3b7e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2281431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d4a5d9dbd4b9703c1eb50c6dc0f1d8d99fbdea88907b733ca714e3a0ff3ad. 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/QZHN72248300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16c9bbb63b74d6960a157dbbc188aafc10300416e53f7c1a998a1cf4961e4b6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHNB2281439.
A Worker Among Workers (The Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe103dc4b7fb27e4ca6fd6b26bfd8b247e650d34b22cacdd677f2c1cbe9af74. 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/QZK6G2306911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcbca0b646e7634d6c0d0dd5bba4f23add6fd899e87e03f8f1ea24879d33467. 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/QZTB22322799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac9a8ccc67fd7fb0703f1ffc0c9c223804812b23ffa825c0d7bd03c227a269f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/TCAIS2479953.
Mass Movementz (Rarities, Remixes, And Recovery)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b70efec7ec2c56ef9cc3c33f2cccf1da50e4e761749abfe27d30a494358806. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZWFW2486840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc884c544fb56bce20d846dbd614e15f4aac5e171180d0ccf54f17b48858dbb. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZFZ42496140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8a9a40c8b51fc6bdf3a3b07e22caf2970169836ee8d78e9bc3e9ef9a69cd61. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZWFW2486843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855bfaad9eb3affd88c4b8fda3d0ce3a0d509316c4c95d251d322f117e4f5bf. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZWFW2486845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cee28a65dcd15b0c9e32713b2c71b491d8d987eb666d82d72e0364e1eeda025. 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/QZK6K2444949.