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 0x2fe748a0201c82ff00a84012f0071a2bf0eeda41ed6c9cdc3e8e12ff5e10835c. 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/7e6198f1-0edb-44b6-8f79-c02604181093.json and https://artists.proofprofile.net/proofs/artist/7e6198f1-0edb-44b6-8f79-c02604181093.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 0xbc2936148827f8220af610fbf4688aee8e74c4e7d0759989086bcf80ab9c3107. 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/NLF711312388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81f2fdfdb0a528209f9e8aaea7cc9e4f0fdfe899d965e54a5e3afa8d4af4176. 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/NLF711312389.
Perfect (Exceeder) - Gabriel Boni & Breaking Beattz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8d17c1075ae1decc1e00762f7589e97a606284ba4f34d13d0f685079c72409. 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/ITH641606676.
Perfect (Exceeder) - Outwork Vocal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be68029b9a75e00471029be7d401d3ddca02b635f1238872b1354add6427c29. 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/NLF711312390.
Perfect (Exceeder) - Martijn Ten Velden Vocal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e60d8ccb971d3866a0d82d044e5b90e75c509c2d105aa7e615ea3ad73330425. 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/NLF711312392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e16917c28b86be5ebc1970f2df5ab88a459db82806aae4a34ce6301bffed2. 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/NLF711312394.
Perfect (Exceeder) - Gabriel Boni & Breaking Beattz Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6eb75e380d722a9d53f44d49157ac242c3d563a6e65fc0651a81b789079c4. 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/NLF712008713.
Perfect (Exceeder) - Martijn Ten Velden Extended Vocal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b79730c8d1922046f25d8f5971a87b9120af47ab667033d7eca75884833d8. 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/NLF711312393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9356d783b4fb6b09797ca83f39b80346ec1469e1b2160a60d92393e8f5a1dd06. 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/NLF711312395.
Perfect (Exceeder) - Outwork Extended Vocal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a732ea0240f37640ecdb0fe570558aa7381e7e39b5e28c3e72d0bd59805771e. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/NLF711312391.
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 0xf98f3cd4f9f2d60b2c10445bc1f7af19c9382beb19ba2e1e3eb6ae307c527bff. 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/NLF712401724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b139e7b12427c289828f6da77eced40fc4adc89bf056cbd2e10ac5fd8908e. 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/GBKQU2312014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2936148827f8220af610fbf4688aee8e74c4e7d0759989086bcf80ab9c3107. 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/NLF711312388.
This Is Toolroom 2020 - Mixed by Martin Ikin (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74ff8ed8d174291c2bd0a1d9166a25f04f96ed38b6ed2b7d68861050dcfd5b0. 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/GBJAJ2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89320a223c73f22c965184ff96176ac0302cffc62bffa67de3d0b3119431b2d1. 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/NLF712400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1533c985224196ac408817ec215f932278f99d554b0d6aadc41cccdb99cb2e. 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/NLF712400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ebc0a5486b7f790ec8db962fcc11c4d431c111d9860b2b9420a455f3b4abf8. 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/NLF712400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2936148827f8220af610fbf4688aee8e74c4e7d0759989086bcf80ab9c3107. 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/NLF711312388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe25e2c91e3872b8ccba2d01bd441397ed69b818848e153f56ec95c4b254738e. 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/NLFH50800435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a6921cadefacc59b78ad80c77b6be74071a5a6055b6295246c6a1bfaadd7a7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:07:51Z), 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/QZU7C2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c149a1322ad0fcb53fd2b53ee606c851ef461c9734ee5e1bec44855efe97b1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLF712401723.