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 0x252627f2c057bb3ba1f64eb3e6a8eff386799bfc1ae1e09f013949318b965b06. 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/834600ff-a03d-4caa-adcc-abdbd2e170d3.json and https://artists.proofprofile.net/proofs/artist/834600ff-a03d-4caa-adcc-abdbd2e170d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Between the Lines (Original Cast Recording)
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 0x1371c2c6cab4691e944a4b6e26ef3eb92a40731cc5351f8bde8d50cbae42e0c3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USSK32243127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f9cfce20817ad76ff0d7e286af2853e2aaf8db00832d1441c41aa6c48e9786. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSK32243129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6c8e3855ea44a9d0eaa09a3e8bdb5d856e1ac7034051e3a0a1fd4a03177d18. 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/USSK32243131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2d81ce0cbef7c11496ecd2feddf1fc98b5b086cd083a8d0e0d20c552dbe87d. 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/USSK32243132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe47469575944248bd07e233bd04d5d0621db5da38288e73dd13b546eef0ee. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSK32243113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e94be39e830665d0bff93ce30027be101a1dedc1d0c96cd31baa5ad3003145. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSK32243138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f28393c8f7abfdf358647e07cf8d31deb7a1110bb8763d0b9d45373ffaee97. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USSK32243139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8682fde0754b4ae3364ab036a76fe59ef8d811c8067d758bde51425f2ce20af5. 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/USSK32243141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb55b729f17b09901bbf49addd87e87f3418fedc04dbfe9a0ef323ddec7121b7. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USSK32243124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5e0447a35bebc75f91d19ca00510faf35ca4817b6cc2f3793497ae7233dd4. 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/USSK32243144.
Miller's Girl (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649df5f8a98a4654637720a913d38e16e390506ff104d65afa09e79974a134f8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USA2P2401633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8d43fe2084f2ed0c871c9ccc673c28f9d462b79d47dac7d4520f7cfbec4e7. 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/USA2P2401635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa6953a269062cc8cdc8eae0c123066b5e31226e35bf57d8e0ef824b0b9b280. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2401636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74cb19dca9c6dcd9ad4072a3799915abcb9687db0b9eb4a3c0eab4fb1d7ebf3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USA2P2401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e62a3e90e1984f4403f32a5571c0a2d0fc6cc34d2fb5d04e133c05380017df5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USA2P2401644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b7b4c0188724c3d72f1300d519e355e30b6692e5c800ee28b0eaabba180044. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USA2P2401651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cb9e3577f5f068a164440cf4321ba1b3835a9cca66dfb4ee1f1424027e50b1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USA2P2401652.
The Book Thief (Original 2023 UK Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8404d5cbb9562e4280cef83fddde77a8b87c4a66f00085ac43df9ff6466e89. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZZPP2502203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa18566f5fe628b8a740bd7d8cc3b77c21abd6e4ca435447eceaa1580f2aaf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZPP2502205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77d1514f72416263c10807672babc9a1c8a0910f9bcadd3e836d44f729924c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZZPP2502206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5344803505ee925c8dc026a9fc569db035aaf2a5364d81139ea24d36d55c46d6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZZPP2502207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd554d6ae473deb53321f44964b54d62482141e777122937e623163ece4f5a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZZPP2502208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819bd3a38a14cb1be5f53c2003d52899dd1ee195ba06f7bbdf2a32bb87d02d9c. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/QZZPP2502209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56bac266b9d42c04d6da87ebe984a7b24b3df20819ee0801cb22753ab0408ee. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZZPP2502210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2e2d0c7c84dfadf983b7499a45f9218fc471e9af3639349b7ceee54eae6e0e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZZPP2502211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6eb017a4a82ca434a62087d431ba4e9e9f844c361d2e0ede1257ba5235f89c. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/QZZPP2502212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db69b2c6a4012a129edb88378223b3587b1ba7c3cb8f931ea01356a0580590c. 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/QZZPP2502213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa732b1b9e7b4f3e4280986ddd6f4d35764a1e1bf3d658df68881ba3358d2ceef. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZZPP2502214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28021f3bd238f431d3b4c89c8629dd47d6de6212710db90c2d70f75f066c51b. 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/QZZPP2502215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0a39685e5bdcfa91f8c4954efdacbd4c122492ccf088af6f07144aa98d2e6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZZPP2502216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8906dfc5ae8f6ee19a363d14e75fd41aaba9842845d5a19a597d54f4f06c2af. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZPP2502217.
That Time of Year - Instrumental Karaoke Mix
Olaf's Frozen Avontuur (Originele Nederlandstalige Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa831f9b12c8ea65f87e71fceea844148ba7e7ba599f151da5023294dced80bb9. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USWD11782699.
Central Park Season Two, The Soundtrack – Songs in the Key of Park (Vol. 1) [Original Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ef6ef0205097786b1268e70552b4055c3ae0a2a8f20619c1d4d2804d54a23e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHR12141821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35434ca36e57dbfcb4bb910578964e03779c7bb76acc6eff20d2cb4c58e33bde. 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/USHR12141822.