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 0xa925f7e0b5ff10f40ffdd0f0453acf1514cc1bfa536a635e2342ecacf0a0dcef. 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/68a8b4f1-34e6-40c7-9553-1f634d58d5d1.json and https://artists.proofprofile.net/proofs/artist/68a8b4f1-34e6-40c7-9553-1f634d58d5d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Adore a Little - 10 Christmas Songs for Little Ones
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 0xb942e25827972dee89d2958388b36adb66857b3f7242ba062d0671efaf544a05. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USWR60300712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0121f7bde8f4800833628a331209dfac67d82449db42df1a3719fa624a7ef68. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USWR60300407.
I've Been Working On the Railroad - Split Tracks Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18728e35c37c901358360b7a248f06ce66a97080db8eca39be5a4dc2c8be38. 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/USWR60300713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390362d7b0708d774e3b62eb47179c685f3cf1c043684adceee94034fed3023c. 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/USWR60300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf083882310e8e70f232fd9ca1f10619fa9de89eff9efbef885f3449cd51ff9de. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USWR60300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cad88cd335929258f3a655b62b16e3bc03dbd5a4ce4a2411156f0441f4a1c88. 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/USWR60300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0151c44164a4f001c78a2d0637722fcd4ee709ce5d48de8981411673a82ad949. 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/USWR60300785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2ebf993b344058fbe81a89eb9096259c4dc1aba17ae44137615c579e2a75bb. 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/USWR60300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0bf5960c5116397b4a416e393701ad1854657274ca9e878ae67614b92a7c93. 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/USWR60300779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f22e17b27664e6054d215979b07995ad61caf3143d9da7842bc4cf48e93813. 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/USWR60300781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7d3b982569c73c28bbc1119765b5cd5e7dd219964d3e7422f471fc472347a5. 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/USWR60300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44123505630d81c8af3f9cf65dddbed8194ed91d00d3346167d20d113bb3d9e1. 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/USWR60300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9763d126f11e2c486838bd808fd96693edc12408407b980da0d2346c7d52dd. 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/USWR60300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a943a1c2526cfbeff32fe5211f6928bf0f172a5f18e5d8aab502d9661d6128c. 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/USWR60300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5cb5e4cad54c05c2ef11f12c8ffc3e60ce59a493ad473b85e05714c6ce8bd4. 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/USWR60300777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea144a4f5c78f8bc7512abbfa804335080cd218249bdab51b4f51b2ae69072c. 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/USWR60300789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640217855db66329b27b589d94b5b5404e92ec89c3188b924986ef033b57b955. 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/USWR60300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf53d45d3f13e2dc6c0c7749c4594f29f17083a915fe378fcd6b9441f5ab1f29. 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/USWR60300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c410727051a040709000b06bd164e7395db0a8c0fc6e7372968a60231254b9. 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/USWR60300787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252dcc2cfe946b0492b2844e61c39bee8aa0f62cdf03df9ff4666461c60d07be. 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/USWR60300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96164d5292eed0cd5514c4bc7bf7780d7dbe3d6a79af39852e6c249bdb918dab. 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/USWR60300776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b597a295d85b156bafc80ff974e861bd02d2144d07222623aff4189c9999b1. 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/USWR60300786.
Twinkle Twinkle Little Star - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872040179119a75f69704976a5b42556dc668efad449d42f0773069ea83ef3dd. 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/USWR60300792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa048e3807020dbc2e874a12aada67a3e1e5f482a9af332dcd108313498410700. 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/USWR60300780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34ea56ecb7879eb0c2899ea9326205172aa4a30f803b4171d1a45b399730a8. 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/USWR60300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430c42b22a4a26fe40ee984bc4fd1c051e9dfd0c6f7428f26d32fc0fcc55525a. 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/USWR60300794.
All the Pretty Little Horses - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb0fbf59db0a81b40b06d29c6b21d66efa7933f2c92f3ca19a1c25d5a5e05f4. 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/USWR60300764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68ad08583634d1befc0c2cdfc8993e530036940b75b6955971d7be04205a80f. 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/USWR60300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bf7dd6d9ef2fac8e2d21fb944ada42ded8c85d99670e1ed8a39eec9a6b78f0. 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/USWR60300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1119f50548e054644724936f6fdfd60ef2018c07f8ac10371df1ea4758d680e. 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/USWR60300778.
Too-Ra-Loo-Ra-Loo-Ra - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7cf153d40a1d50f2188822ec7b595ddca4382167ebe6d4e2ab86f9201d0a43. 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/USWR60300790.
All Through the Night - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e0f192e8cd05619ed0b21b0ea6834a11c51294dea32b492284b637843dce1c. 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/USWR60300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a3c244c46f9633fdefcfdd5ef9d3ff4d1cfc26928a837c539b4744636dc770. 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/USWR60300784.
Swedish Cradle Song - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025966d47137208723907eb7a00ebac9315a9e5accbd6cc091cd16b3d376eb1e. 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/USWR60300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973c90211a9fedf674d309c2c595276215dff713377ca98afb0921f42f14152e. 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/USWR60300772.