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 0x0255e978381355824ea0e03f56c5d573cbbd3b545f6dd26fb95744bb087279a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96783576-b882-4ec3-99e8-6264e7be5b9a.json and https://artists.proofprofile.net/proofs/artist/96783576-b882-4ec3-99e8-6264e7be5b9a.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 0xedd995ec977433bbb4c46a68e31565448f8ffc11c3805b025023f58f61759978. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLZ542301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb93269fadcda8658ac7e7977053244e384c70ff07c4eac1483c0f0c7ff8548. 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/NLZ542200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8c6f64060dc9d671eceb80313106ef18697dec82fec0b127d48e03488d197. 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/NLZ542400292.
Change Your Mind (feat. Stevie Appleton) [Extended Mix]
Change Your Mind (feat. Stevie Appleton) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa901ff96ce44dd73f59069208af85df62fa05ad32eb01f13d406696491e7741c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:22:44Z), 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/NLZ542301384.
Change Your Mind (feat. Stevie Appleton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367cbbd9fb1568958a303683a5a8fec05cd4694599dca3c2f5b3a7697fe68cc2. 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/NLZ542301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f228057e65351b53d21c7607b2d2d99600d18867d2997bb3f3f8b3223b39d84. 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/NL2QC2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeb9a5594cfed63a462b3f9c6e92527a9bdc4b30b0b810e10bfb74112c3cbb1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLV62313600.
What You've Done To Me (feat. Bemendé) [Drumsheds Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eb8b89358265250b68b6d3f5cabde1d0158615254196d5127746c5fa3db6f2. 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/NLZ542400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9f2e29d88b63ac5460446f52f06c032b1f70db76bde48afb2b869a03723ca5. 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/GBK6Y2405361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd58fd35de710ae8b8b206033cee5348877f6e28159d6d2bcef639eb037c2. 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/NLQ8D2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff99db5f0eb34a5e1852acae102e99a8f1713c6f7184c85e757eeb53caad426d. 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/NLZ542400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d73a8734aa7319bed6f664c5d793ee7a6b9bf022880e13caee1b476b01e78ad. 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/NLZ542202442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78496b4568e0ba8ecd4b424535470e5331d97b8773581f09762b187389556b8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542202441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165d6bf291afba764680371f96e04490e2d68ea87de1c13e922df598b117fc2. 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/NLZ542200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b34b2fd5c7b61be77c8ab0515fbd431056229701e3b4e842802c0fc362b924b. 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/NLZ542200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb59f0f2fe94273f2cb1852d2a6d6acdbc46d5a1916eac59fef6aabba0c71c43. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CYA112001042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3001983e53444ce02091d0a5214fb48b2384070700c8ac9d0326504eb14051a. 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/NLV9B2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bc95fc1ff6af4750cab72643c581e44f09366ef2bbe447882c0e238b2abf9d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLV9B2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76592b90e0f15ad27b1477275772da43477f18c824e544b09eef506449da6abc. 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/NLQ8D2400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e1ad903a5177e50d8bbeab9bea3fa1d272981ebba54ced934c1088da10934c. 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/NLQ8D2400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd58fd35de710ae8b8b206033cee5348877f6e28159d6d2bcef639eb037c2. 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/NLQ8D2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139e5ab7a0341c2395e47fe1b9e3885b7bda37b8d6bf7ba4b227740cdfff5e99. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXKUH2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd58fd35de710ae8b8b206033cee5348877f6e28159d6d2bcef639eb037c2. 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/NLQ8D2400200.