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 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 0xd343141284f007e991a92d481b086d8734a356dcba4bf54e992e2ab3e568063a. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee854185-d31e-484d-bf95-439a3571b51b.json and https://artists.proofprofile.net/proofs/artist/ee854185-d31e-484d-bf95-439a3571b51b.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 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 0xba3b76f5302ebe6ae4119bbcc5cde94a3bba513f65ed47995790f163bf58965f. 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/QZWFQ2394009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64af11a213034a600b2eea95336006a463390fe59c3d6c6ffb04dadf8acae76. 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/QZFZ22385118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2baeda97d2b086a037ed67d28da136578522745cda9bb3540a9d07e84115a79. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZES52265488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949ce92bf09934bd1c8f4d0ecacad91155424014accda8573bd19795c313f446. 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/AUBEC2413099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbaf5be4afc7bb03a8c026192844f732b70e25351b7977f97267e2e1fb74565. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/AUGBT2360755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3b76f5302ebe6ae4119bbcc5cde94a3bba513f65ed47995790f163bf58965f. 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/QZWFQ2394009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115bfcf195b78afcd632161a12a5988ab1528cd2020ace59d4b7bc1a2f802483. 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/TCAHR2391984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c979fded07d1b675c6af7b7f932d5e4e4c5f5f11d1404f9710ff00e75e47c17. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZTB92387862.
Indie / Pop / Folk Compilation: April 2023
Coming out (Or Something Else Like That)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38ae1b7baba6e32f2e958f6e9bda21d1daff01f60e7f17c6c8bdd077ac8219. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZWDE2253934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a09efbd12151ae221ed069dfe1fce47724f41897a6260c5f0470f99f83523. 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/TCAGT2357147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96ec1e32452482d13f533f8191c0da60ca4d8ad33b1df805d542ece51fd3baa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AUMEV2310511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331dabc37f9a07169d653fafd11dec6b34c10ebc74085d9f229141b41db20ca0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USCGH2316041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8343ed43bbb11458b444a223f3d0ddf99414d6b469b75107d2448ba0808db9b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZK6F2221786.
Growing up for You - stripped-down version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e031c2401be743cf1034316e836b856ddf57ffad2a47b34152428b628b353c0. 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/USANG2245487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0653b67d201c5a096439b60c2ee05d925823373bd90a93b862d701cdecdb2305. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USANG2257711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe767ee98189c7b2e42a1d1694d4565bd92a5d45a2e7f733783069a4f05891901. 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/QZ5FN2368159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651c8851e5caef8157d34e90d0cbe4ac6f5d016686e40ee2d8cb11dd5b339f39. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEZC62322278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64af11a213034a600b2eea95336006a463390fe59c3d6c6ffb04dadf8acae76. 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/QZFZ22385118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79501a197c7f8b05bc5740430eada17870a3e51c31a8eb0dbda2f164c8fcab9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZTB72201853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa30256f778fc26a49665b9bd1df370054ef3be4566aea1bc9218239a1c26f4d. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/QZMEM2240826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca8b389db8b70c7ecfaaac809aeeb934c121cd512c4c10b59f1d294624e3f1. 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/QZFZ72305339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe051e577dc292cea085251bcac378cbafbf6f2dbebba9a9f9102d689d12a2b61. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ42357695.
​New Indie Folk; April 2022, Vol. ​2​ (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2002433ddeb9913ab94b7cf5fc4d173077687b1d7eb2802edbc68a5ed6cadc. 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/QZDA82213481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118940d8c3378bb2d14b1fb79d78618b07a4a9980e53ca46875d80b9b1fc40e. 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/CAN6Y2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2baeda97d2b086a037ed67d28da136578522745cda9bb3540a9d07e84115a79. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZES52265488.
Best Indie Folk of 2024, Vol. 1 (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3b76f5302ebe6ae4119bbcc5cde94a3bba513f65ed47995790f163bf58965f. 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/QZWFQ2394009.