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 0x95e26228902320a5ab6231eebad6f8f164122f02001ca5c1cdec095a335fd63c. 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/c53db44d-1717-4cf7-9fb2-85df762aa786.json and https://artists.proofprofile.net/proofs/artist/c53db44d-1717-4cf7-9fb2-85df762aa786.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Frozen (Originele Nederlandstalige Soundtrack)
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 0xca7b43c47b7069d8ef41e961b45419c7a95bf648fd1e4fc956bd8252b9c432fa. 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/USWD11467971.
Zullen wij een sneeuwpop maken - Van "Frozen"/Originele Nederlandstalige Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c3df12dd8495a9f17a3c596931662f847b755f587959a7cd208f95e49f8855. 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/USWD11467972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe469bf23f36067ece3df64e719e900604261d657607f225c1af56a1ac4c54a1e. 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/USWD11467973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606cfde22f6b0bd9cd82abd16cb665a656929f41bf0ac0f3815a5aafd4dab51d. 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/USWD11467974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e0f65d3aa7275bd1bdffce51e05c076faf9e0bf9ba3bb78c38cab7fd8ec344. 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/USWD11467821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f16fd32f824f2df775d4b7f4679d7c23854f808981e0550d9e07819fa4261a. 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/USWD11467976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0567cc713215717a6a368dce4c9ca972f8a9467a2731927f0683644eb2cee76. 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/USWD11467977.
Voor het eerst na al die jaren (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc543c145dabf35ecab540a2a5540d26dd64336a3f6da4944dffc2ba8a30d3a. 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/USWD11467978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ffa44280d77da8fabd5a3be0bb218b41af6d8b3054fd976258185d497f5afd. 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/USWD11467979.
Let It Go - From "Frozen / Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4874e6707f43a888bd891732a3fd2c3f6df3928fd3c332b9ad15e1ccb585594. 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/USWD11366344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ab8580c80e97f983206eff1b73fd4c300aa66d8d1cc92b0a0065913c7178ff. 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/USWD11366382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3820bcd3ef311d748b265687f1860dd08fec9840a0e4856a0cf9d15ccb635e8. 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/USWD11366383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8571ebf182e6d78a0b6c8ae8ae1e5a691c5be46016413810fe6756a7b1ab0066. 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/USWD11366384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74890cf37fd419351e2cf886135b418b08f6839a3571a1f95a616cdf9bbdfeeb. 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/USWD11366385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0b3356bd4c1882ec667ce78361f393566bcefc6cd4fd179f21ca24e96b0b3. 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/USWD11366386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ac1870e8622d245642e920aef04d783e1c9220f31887fd2e54080ebd66f4e7. 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/USWD11366387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238e914ffb497639c8d55eea26ad4bb86f1d5f8d5022f750b74fcd3c167f98c4. 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/USWD11366388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5065db289534b1a1136297ca9236825a3646d5af15f7e7b0d982d77c183f6fcc. 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/USWD11366389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06589e0d3fe46c5c8a244847d9f1fde9f58ac2467810bb409b77a5dab6eb887. 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/USWD11366390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811dad08eb4fa60b734a2f78d20112eb30bb5136baa1e428b2db4a2636f3aee7. 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/USWD11366391.
The North Mountain - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e6ba4182be1c31459c4fa11e82e4a84b4c8105eb53fd8c764babbd37b68eef. 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/USWD11366392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa028159fe9188b17bcac1085654579889239fd93db32dd7b979777f7ecbc39cb. 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/USWD11366393.
Marshmallow Attack! - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189eb145f1b93c841075326996e28c4a8e00cd5e7125842aaa50dd75c89bfcb0. 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/USWD11366394.
Conceal, Don't Feel - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76995b1fb7858aa08ac3e967cac5bc335cbaa096541f26a5dc7e98f978a7638d. 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/USWD11366396.
Only An Act of True Love - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc324704249149a9b9e588587c38c4f3af2a631299ad22812683d5709bd4d9ddf. 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/USWD11366395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0138445f9bca235f0fea4cba7d245262e7dadf6f34f31e998cd2a49db3b63f48. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWD11366397.
Return to Arendelle - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e07a4ab120da985f38a848dcfbfeb434b54a8ddda2f048bce7b9855f85e592. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USWD11366398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4f563a56ca61c63a92ddfeec283c550de8f195cdaa6f87e580e8178fd1c555. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USWD11366399.
Some People Are Worth Melting For - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a2254bad29f14c16cccd64cf3cd3bb80c6692fe47119ef94bdb8dc44af74de. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USWD11366400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7e8439afc4e506dad2f744f84dedb97a2931656e808dfae018096bd3aee31. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USWD11366401.
The Great Thaw (Vuelie Reprise) - From "Frozen"/Score
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294d8aeed39086c55c8bd93b396cda770b67d0b0f27eda99a87121a7b676cc28. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USWD11366402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7232a636205bb47ec51e33c5f97969ee071880bf7f0b0a9eb2f55d13650d8433. 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/USWD11366403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074e9e27ea2ddf8e15de128ec35e67ab69e3dc538009c22f6819a10a8976cf6. 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/GBMJG2319456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b26b31a6f16787aa0592690dbdf6f218731560ff96763b4bcef01a2b3c12f82. 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/NL8VC2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9958c10397651e052f5a2aac77dfabe1225d5edc542bfa32c1b893a8bb3cc7a4. 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/NLK072300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2ad88b029d2c2aa81ce3aead1b9b7072ba63b7c50aab7ab981efa74e0732ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLK072200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b1005e5aabf11b819106affae87196971a081c011b69be0b996d11b8ebc0c3. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLK072200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42861b4b7b334a596f17054ad17521abb1005d318999f82ce7a13bda4cc6ca3a. 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/NLC8M2000367.