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 0xa5b87ab1100868896aa7662fccc939a5eaf8ee4b91476e94b46c0ba235d1760b. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2e4375a-a64b-4538-901b-328065719611.json and https://artists.proofprofile.net/proofs/artist/c2e4375a-a64b-4538-901b-328065719611.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 0x72b3206126161d5050c476666c4bc355778ac35188ab75cd49b3e876e86302c2. 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/TCAFR2159905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4c685465c9ad4fc521f5674f317e56646f5a8de3ccabf8f182308c9a8ec8c6. 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/QZEG41801824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc325042b2afdeed7b70d5809e99dab59b26107ba43ace1a55fe70ebcd77d37bf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZEG41801827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1770062ec3a7686bb6bb6f5844bdd888ab9d98def7d8a7e59fd3f92f688768. 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/TCAHK2330035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd40b71a25f8bea1bbc8eccac0ec29d1a92855646d3022da11582450cb63334. 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/TCAHK2330184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f5a04a7ee02872b0c103db943f88d5e763f7fe848a26de32898bf69215721. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/TCAHK2330028.
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 0x0044354ebf3fa8cc672a016eba5f1083cd45c85bd1fa1ded142743fd9434530a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAHK2330342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d0cdbd5b736f7c9521af5cfb5109fcfdc296836c55c7aa8e58545cf28beebc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCAHK2330347.
Stvii on the beat, Vol. 1 (feat. DJ Banger and Stunna2fly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a13e4b532e5192e895aa50d25c025392b46636dd7f1449fc62b78e6b01432ff. 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/AUGBT2218204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c9b76a2b7567508136968087844086dae0ab33db9e769bd66f042e7edfd58. 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/AUGBT2218219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde64651ef7ad13d780156db779e47f0a0c1c96742c2a7b1bbe8aa5b1c5254589. 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/TCADX1895658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382d2c6e402fe44e35ecc9bdc4dc9314a39a402574cf98146bf85c868811311. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCADX1895651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f878a2165d6b8a2afdee3e0064a668f10d84be3f65fba388e7ce5962aeccbd8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCADX1895663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed587668711cd2099f88227a2eab2a88a350bdd54e60b6e83f71845f2d5f3f1b. 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/TCADN1889217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e1572a5e7c1310cfb93fdd0e02f69cd741de38597d0f391a409d3866063dd. 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/TCADN1889231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d69fe548c8e0a09b65f724799d774c34dfcf83160c45304105aa90a775211ec. 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/TCADG1784033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d2fd162f6af1ea80c0ac6903f87d9de6d9b2454e1686e972ba001a0e45919. 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/TCADG1784036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc19c71490e934c89bc15cf1bf5a112455236e0777e085b5379c11d5e18f5c6. 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/TCADG1784053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0982d151b04026b10121c72dd6422345234c46350d05e1979acc65873e7fb659. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCADG1784014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a0472094bbaf6cd780f2b9589b57405470ecc905de7e0fa82d5e488ba8b9ac. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCADG1784029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd974c807d7d021e0ce48154a0d47f80586e6886969b6ae30936ecfa4bf8829. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/TCADG1784031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5472cc9388a01c2361889f8f415558a553ebfa9029d0d1418fe227f8f82b4. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCADG1784035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499fe3a6d19206c07b4a89c660d5ae82d063dde05c576c48d384efcea82aebd. 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/TCAIC2473449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df69546c8b8740120480d66bab2927d18809903dd186ef32ae9bff2273e8bb. 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/TCAGZ2364340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057227c26b0721265c2bf9bd6108b61889b7612ff3d2531ff3e82753d2460d92. 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/TCAGG2275478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246767702d06592d8968497f3e3a509c46419a128fe4baa3acea1c331219d6ed. 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/TCAGD2288027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbee9035c88e884289581e6fb409fd1720479a678fdf6f1a8d4c81a7a299ba8. 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/TCAEX2077738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c82f222c213425b5df37bed9da947919b8c64c9101aaa79b6d644e4cde2486. 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/TCAEM1930285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2617cc618da3c68da27423545bff41495faa64a9287da6dd0425f9ef03e22bf. 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/TCADH1787419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e82b5f07187054f43e245970c1c22a11c813281b14c5fb70abac030b834167. 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/QM24S2007688.