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 0x147f2f4298cc20bdcc6cbb3373fcda50fbb59ab2ea48e4a76cb6e3312390b89d. 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/2378a2cd-5aa9-4f3c-8cd1-8682976fe319.json and https://artists.proofprofile.net/proofs/artist/2378a2cd-5aa9-4f3c-8cd1-8682976fe319.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 0xae433b911758f7ca5d77a8c96a4dfeb0b6ed4a544023401f4adfb4a9e42d834b. 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/NLZ542301451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de5b90faffed4df8c8a36860cd616ae550a93d709934ba470fdc2b67b38db14. 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/NLD682300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416a66c80b133db8c89e26000968bb118aaabe5245c1ad0a471a65b01f1fca98. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/NLD682300093.
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 0x7bf6b3be57d628a00bcb044c38991510afae5ddac3941bfc6916e4addfc44673. 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/NLF711607005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b3eb09ba45dc18e28d9b03e65ac1658f3fcd0a13d5852a78a335f9ef9028f. 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/NLF711507782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c19e68e153c6227f3ef0d449d463d59ba195140f47de5485b87136f6bb77a08. 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/NLF711504156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b29f50a948c933726cbab9c47fd16bbded28040bf6d0fd0bdd85370839f90b1. 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/NLF711604216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73737bea01ec767d1036d62ba79345809c76245dcb1d4d69fa1b03a7b049f986. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLF711600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002362f3a5ee772275968c2701bdad5800f225d8501d5c2feb12b491cf70937. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLF711605508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57342cb3fc1214ad255596ff83c53a947ec74452c181745b75b0cdad4edcb98f. 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/NL1DT2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a381d7b5efdc08793b01740101b8313fbffdf554c36271a4854a89975bc1bd2. 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/NLE802300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa213280830e89c44a2787784bdb6664a44c69054078908c09ae37dd918527c. 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/QM24S2300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8a9cf89e132143201d792d24276381d2d20fc2cf4d71d0ee2710f4825bddf. 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/NLT2H2200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c48c5c4f79702608059b381a9a1c57e0459b398dde3ae9da8305ab6f613fed. 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/NLD682100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b1e1d554cd5f8ba23d97335941774268c89ea5bc49989646bef9ac0c431f73. 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/NLQ8D2000642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a462b093af680da8460a903567fd0e23ac2f19371cb9dbd2b7b311a6e5956. 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/NLD682002073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90b3ec4cf9b6836965d0d7011001a9a372c0de1994f9afd54dcc27d52afa890. 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/NLF711806274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb9bb694ea3540fa599bc845d98c08a04d3351b7255b2df9d6322d4c0f6a34. 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/NLF711711462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8dd6582d15e15c8bb5512d55ac4d565a70e7ea70b5c2dc7738f8147cfe10d. 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/NLF711708669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5921f43509d9264723be19f3660b0fe8e4f1f7d1c5c57ca823892341d25f3b. 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/NLQ8D2100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d10430e74e2bccb2997fc94f2678c0bb6ed8519aa5237b6f1edc8f7c2a528e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLF711905374.
Nothing To Lose (Mix Cut) - Tom Swoon Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84341b60e2967612184431e8a0d0eaf18f26d419a86758aec58dac946dacb7bd. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLS241502819.