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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21048ea34d88263c2299572a0ff476ce6c7fb5b090ef6fcc4c8f6ecdb247dcd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48f81138-7412-4277-8f83-1ba2be0b8db0.json and https://artists.proofprofile.net/proofs/artist/48f81138-7412-4277-8f83-1ba2be0b8db0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a2f6eeb9c12c5a1176f6f91c89a10a02e4e54d8c9e19dca80b4a8502b10390. 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/USWD12113150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fab2092aa224bc0104fc6dc6a61adb1443c38e5232d695621b001139e774d3. 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/USWD11366679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16b174ef584fd57383aa86ac1a0602c201bc01a2f61a9c0f23538d238ba8c3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD11678609.
Kjærlighetens sang - Fra "Skjónnheten og Udyret"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdff9e0c581e6f91246b9c8cf5406f41c782bfa321711fffb72b095804dcdf2. 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/USWD11778834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667b5ffb231d2cbe4295fdb517ff15d648df7ab5e0a6e15faaaec29311eb08b. 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/USWD11994923.
Her må du bli - Fra "Den Lille Havfruen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a03a64beb5cd536321dd5c7f8692b2f3f49a53541db26ae75832db965db27c. 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/USWD10526364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb10435e1f3670271a5d3c7f10986319a9bc33207a46693203c50157d5c177e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD10524342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eaf4bb122d3dc94d671f24f28f9e3a5c84836bf29062ca14acac7605f09542. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USWD10526397.
Nå ser jeg lys - Fra "To på rømmen - et hårreisende eventyr"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab453cdb30d3f91187bcf7c79f2d203d09892fa8fda3bda736f2e898afbfc84. 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/USWD12214188.
Når skal jeg få et liv - Fra "To på rømmen – Et hårreisende eventyr"/Norsk Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c263044cca244da9b3da29ec58ef57281b1b22530ede03b87b8df813cedf8e. 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/USWD11569881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71efeb702bfb01c537328a4fe25fd7cb31b720ff677d97022e652ed8d06938f3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD12329219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77560986947b9b1ed3414010d0b7d4110f0bbb2fa3f2630acd205fa27df30ea0. 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/USWD10525187.
Jeg skal gjøre mannfolk av deg - Fra "Mulan"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da52b636ef86427c39d1fd222d02ba8b707ae3089d7a3336824b5d337313741. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD12329220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b849b9ffa0e475739963bdaf061545aaec8c56eacc999440612b85396e69ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD10526383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f938dde53e3d8d911bb4f73847389373276c0216ec2822126f96ac819ba27c. 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/USWD11366678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6cbdbe8f2aeac1fceb1aebada674d9150777ac4cb7e879c074ef5f77d68468. 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/USWD11366676.
Vi tar dem med - Fra "Prinsessen og frosken"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22b5e7172a8859522b94b7e549cd2b1ceed3a48e420cacdace2563f5d5c50c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWD12214213.
Nesten der - Fra "Prinsessen og frosken"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c70aa582a0cc4a4aae9bf1e7c96f80fbfcb0d944df4e2b4f511624d98e7637e. 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/USWD12214205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd14d37069f591debaf182fd273f621a3832233f2c49c3b57b99ad7a5a598f. 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/USWD11890374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdf991a255a9ddc671f9b9619584d6adbc00263a410b36f9bcdbb58a515dbe3. 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/USWD10525191.
Never Knew I Needed - Fra "The Princess and the Frog"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631555a07b47508947ed60a8e069cf4ee196b6ec6d368c711da5a8e7763f7c4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USWD10937539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ff996af4e412d65e443ffc24347b2c28d9c08176c9cb1db3c9e7bc195ee8c8. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USWD10526385.
4*TOWN (From Disney and Pixar’s Turning Red)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127775459a6d4e65b0ad2f9428b0241943c72723283283898772697462da7f50. 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/USWD12213564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9773a4da8e0ce2f9b5641d0e8394db4c8259604af824bb6c1cb516f91bedd074. 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/USWD12329217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f33722f11ff9f26e68ec44e000b7d946ba7ea4107a791ce7bf251868a9a409d. 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/USWD10629095.
Alle vil jo være en katt - Fra "Aristokattene"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839f3819090ff7da1daa4e3092fdd75d4a0e47fc0dc7e90c44b98f4a23f36cb4. 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/USWD10526366.
Slaughter Race - Fra "Rive-Rolf krasjer internett"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5cef1b39e147c6f72009e94ef5c9ba2d1c3a17eb782f4fe3238cf4bfecb2c. 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/USWD12329221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1b5ac5c25e110c4e0e590409c2df082ae2f2aed0813c3026fd48103c372f23. 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/USWD12113147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3be03b8e31cf2090bf6a782250a6030c8102d75cb7ec181682f4e83ecf9346f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD11890346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c859a9511e4a155d9ca0c9854628b8ed5eb054b7793faf39a4f756dafa931f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USWD12329222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad847661680325f230bebde4e7c7ca898f83bc166e616e7ccf13d00c791a7acb. 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/USWD11890009.
Det er min drøm - Fra "Den Lille Havfruen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a00a225c9e83e70bd90a09b95a6a716ab62116a55b98c2c204b6c98a947087. 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/USWD10526402.
Sånn vet du at han er din - Fra "Eventyr i New York"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1067b8dcef83bd33aba8c2781c89fd51f9f97ef235c17f51d44dadbfbf089ed6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USWD12329218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b20f7f83801fdf442b4c528d28a59a49c63bc6efe126b206d29998a2171977. 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/USWD10526376.
Vær Vår Gjest - Fra "Skjónnheten og Udyret"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2481bf8bd754ee3f1a1549a2944a06c454c7795e4c6216a00bb4b7e5a292e8. 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/USWD10526368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14a70051cea7dc39061ed38cee49b9d80fbb55332fa0628bc3a618b4ac10f85. 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/USWD11785273.
Vær glad for det du får - Fra "Jungelboken"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d0358f06123492c71c83813a2aa570216924733f2b138e1d2672076a703bfa. 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/USWD10525146.
Mamma vet best - Fra "To på rømmen - et hårreisende eventyr"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01375be35a5768ee73af0b8a66200d0618d2b767a22c25f7ab2f3cd88c54c04. 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/USWD12214195.
Hei-hå - Fra "Snehvit og de Syv Dvergene"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273a5361559565578c00580034ac7c2faf7ee6e2d6a212ba2dfc48edfde58b8f. 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/USWD10526382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef31a7e43270b62af3a1677283c7810539484e600131f1537ab298891d5f7e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USWD11366681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e892dcdbb1f11b24644e9e981545d22b98193a6284874b58d709d45358e546. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD11890348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4018a5fb2c66ad726a5dbd64543f0c8c55887358a2cea598e83c7886689c5a26. 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/USWD10526400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef78346e75c47ec91b99ffb0d237143da5012f54f82b6285fb2d281d3eea5e1d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USWD11569883.
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