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 0x1492107ead073954ef58e47206339f0b802395ef74966405a784423855ce4574. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/752c5e6d-626e-42d8-a3fb-5ad48a074744.json and https://artists.proofprofile.net/proofs/artist/752c5e6d-626e-42d8-a3fb-5ad48a074744.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 0x8862bdb75c1072aa07278054a1e3e62811825af12bb8c6bfabcf79e1616825ff. 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/USZHR1800938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c6d64ab1824f189cc01ab824e018148ab4bba67410d2b672a51e63fd9e36b. 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/USQY51441806.
Chilly Rub (feat. Stevie Stone, Godemis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c81e350f668d73966cdf096c25bfec2ea72e9bf3e994033b472683cac05a9a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USZHR1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38eb0dabff0f46ded890127ce86ea6e14b9c1d0f7db2634d9c53484449e9667. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USQY51441809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94f62b0cbaa96a4aff29a6f36a1de34da40bf6144132c80619b9b3ff08f07a. 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/USQY51441810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884808242038d4800f35fd5a8c754062074cf3eb6d42eead30496a07450bf458. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZHR1600611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1ca2b2316ba226d6d4dffc9ea27f9885b9444f07f0a8943cf714c5be2467a5. 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/USZHR1600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8510310fa325530b1fd397452a0f9ba3bf362ca15f3a0cb2257f94f3bb3f8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZHR1600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c81e350f668d73966cdf096c25bfec2ea72e9bf3e994033b472683cac05a9a. 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/USZHR1500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c6d64ab1824f189cc01ab824e018148ab4bba67410d2b672a51e63fd9e36b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQY51441806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38eb0dabff0f46ded890127ce86ea6e14b9c1d0f7db2634d9c53484449e9667. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQY51441809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94f62b0cbaa96a4aff29a6f36a1de34da40bf6144132c80619b9b3ff08f07a. 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/USQY51441810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ecb1c3b8a3ecaa4e285c7106901984418536783b2853a710ba77a464b7b303. 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/USZHR2000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b620e177f01ab34d60c3310e2f69c7c6e1750a722523f75e7ddf7c01af8652b. 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/USZHR1800520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bde5adbf8cea33327ee8434c2a1f9d942436d3300f78f7d74940631d41ed73. 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/USZHR2000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8347b83bf7098cc544bb3edf7b4ee5e1a66fa1c2b4be0e8bf5a0cb417d812c9f. 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/TCABX1400363.
All City (North South Mix) [feat. Jl B.Hood, Godemis & Stik Figa]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89990ba1c0a2b6df2a795430e57cc25c0bf4c32de6fe2682301acf44c462d30b. 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/TCACK1557353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97ff7e8e3147ae05b6a46dd1c4a9a1519ed3502d145c62c404a2f8e0697e516. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCACE1583390.
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 0x72c95fe84b1176cf95c2f6376c8eb1af5ce2f7bb701451ada1e6b22f36c02380. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USZHR1800555.