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 0x2ed83690baa6e18f25f7ab19643b65ba1de58e3f34a452bf9ba3803749d8ce51. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c138cc9-4ab3-4508-915a-e2d8777f4813.json and https://artists.proofprofile.net/proofs/artist/2c138cc9-4ab3-4508-915a-e2d8777f4813.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 0x64486fcce7556fb2c515c23771f087c13bd8932f70a21c94a33973470bb70724. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:57Z), 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/DEQ121642998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf756be899571af93856215fbf933a89c43e7c7480dda2a796d47cebf254a3096. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:38:59Z), 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/DEQ121642999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227f0a6be95ee70490aca087a68cc2964e253cf757b99f805befb448a5626386. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:36Z), 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/DEQ121643002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eaf8b57c8983452c7d5d75a1fa43b7c7f2e3407999e38fe00a695e3414bb55. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQ121643003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67778599c9e3169ec3a40b992828616455dfe91f9cdea5a3689d443392e4790e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEQ121643006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe731ba670c8885083071b3e71b86f56597f5c9e0496b6937dc3a96f3b94927cb. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEQ121643012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d0c0cf15c2104994f9f9dc2b432f9800863551de9fe90e1f1b71bb2da5165d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:48Z), 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/QZFZ41989145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb53a99cc37201f36d71ebb903cf71f46422d3f4c8c7641df1e12d16e36adbd. 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/DEQ022111958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bc71dcfa5ecea06b765327bd4a35d834c145b9d76691cd886a8e878e0f4e39. 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/DEQ022111964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ca02398e86e855e24b9630d7baa7f9ee5fbe3cd17d765e4945d0e590aafe71. 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/DEQ022111968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52ca43ee194009a913724402e7f48d60b47b8414a99fa5ffd032284f766032d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFP2406995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63180c8f44a36ca2b31109603814cbbe30b783557bc8b29848d3d020eade3267. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFZ72503552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23454e6fd9d2514e784de49e1a629896cf366a845b8be261a88be6c8b4adf680. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZES72528868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8c1a36b2498840f3766b40e6eb973a47c6b3dd5c34c0d283b7901f9119f18. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DEP962500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc5ed276f04581381f971784dbc6ba45ca6de69cd2ffd6aa91f93da4964ea5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEP962500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b9ab8e715cdb40ef5a001fc8473d915327b5da4b284d8ef1fe737d4aba6e1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEP962500054.
MTV Unplugged Kahedi Radio Show (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4872fe50578af274935ded9e76bb7b9a35009d5abbb59d78e9130b457f39418c. 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/DEUM71304015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced34cc188c7a5ab18285541ada7e156e107419e0131c52638ea77589c46407d. 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/DEUM71304016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca8675355c182293f3cebc08899cffbedd031f55109f2f12821ad4cf31570a. 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/DEUM71304446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53600c68f4dd2f94c1a5683dd2a6011c1b40a6dfbbef8861c743cc0edc354f89. 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/DEE860000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7035b93c0860f38be7f6abb5c00d8db3607aa8cdcc4317e93a33560b778073aa. 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/DEE869900355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99b852e0e15b45441807cbd5ec855d56f157c51f087055ede12b17fe910286c. 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/DEE869900357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d841b70a6b9a6ab881886f0a040b55bb0126e56cc1dbb883dc34ffe8b6ae82. 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/DEE869900358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2a581ab989b9147aa9890f6ca3e60247ffaf48ca7295c311d80c29b2eeaa2e. 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/DEE869900359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85efe7a7383ce90e3655e799eedcf79597118f829f6f370efc80df07930cb30. 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/DEE869900360.
Sternstunde (oder die Revolution der Bärte) (feat. Mighty Tolga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4266d00d2cea6e77453a9815e966fdb6d4cadedfa0ce2db246a9932c9da5669. 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/DEE869900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a047abeef6752708f99b73e48fafac980fee023c9d57872983e002b516e86b. 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/DEE869900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bbd5482c663626cfafbea4e7da4bc214a81b0ccc94f502f62965d2223d197f. 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/DEE869900364.
All Apologies (feat. Sékou The Ambassador)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2b4c616cdbaf0ce3868493da8a1891ce6a5b4a6e733e1dce7149bde35cd47a. 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/DEE869900366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad265adcd9985002cf00ba482e08880294e99d782e5fc3830f0ac36a68eefcc. 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/DEE869900367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3783b12a1ae7281f38b516a900f955437fc3d4a8b920db842ed06d3f49c7c332. 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/DEE869900368.