1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x30d44b746220edaacc8471302a8f955ffe16bb333a59eaafae9f888f8c8a220e. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52e9344-f053-4b70-aac9-a2acb1c1c06b.json and https://artists.proofprofile.net/proofs/artist/c52e9344-f053-4b70-aac9-a2acb1c1c06b.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 → block OTSBitcoinBlock must exist at that height 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 0x266f28446590a5a6a2af06ef24a21137a8c32c94ff35cfb96504b97eb8214bc7. 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/TWCC37001412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b404e1204f8834e82ea59f05698da2045e4e2da6b2ac51b745e10b6680e7f. 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/TWCC37101546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7e85d852ea50d536a9253ae21c760b482993a829231de62731b0459037fff. 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/TWCC37101568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18005b9dd7f9c0e0c08fc7a5a0198f2fd772880c5d618b47855caf2cdecff80e. 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/TWCC37001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa6060754812c1c1fa862249d09c55a5964cf7128c309dcb47e20023f70759. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWCC37001408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51b67280b70c2b97b895dd717e93ffd90efff27c8a85e0adda8f50c23a1e2b. 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/TWCC37001409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f898753ce8f13944e40d4818ff52bb87eda78bc47c69c20f4382c0e698ce71. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWCC37000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a385f8ee2243b5f36cb4a47f4e97d7982a4d215b84d44ceee9bdab126517f21. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWCC37000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3974a3ffcf17c36e2a21157d316cc83b527314d47ae93e40429827c360209a2e. 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/TWCC37000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e10c24e3e4f0fa846ddf42b3610c7f9ccf25f261b8bc691965a3b45b3b7538. 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/TWCC37000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d1845faaba291e21d5e25b9682bd2d9d0c7b6f2f862d22e0975aba6c83f72f. 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/TWCC37000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30d310c850efc8bbdbe621756c89b8263141f2fd5d0911c29a461bdbd2fc7fd. 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/TWCC37000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc804ca5eb7aa5c1f58291d297ec82ff9b0184cc54011a74e127855d995a896a4. 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/TWCC37000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb28304b662bd2d5555124a9947b187aa7330efa4ddaca8ce44db486cb367e9. 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/TWCC37000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a6a8986018eac9bb5e4d9d38f17d3258c0bb84f193d6bc5f276ced57f759aa. 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/TWCC37000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7a1e96b07e7ff0ace4549b7f4b6acd99f14e1488d92e216026200152d879f4. 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/TWCC32204188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc6b71b8b2ebec66318a261655f7288502e4e31378464eb405837b1862bd41c. 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/TWCC37000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b63fbcd4931fb8490657588d8c1b67b304eaabf5d01dd65c3130b5ad63080e. 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/TWCC37000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d14eb0c63470e3003feee48a3f13b11d94edecc432718b6c5decc18476060ab. 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/TWCC37000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5636c930d4fb19c24bf636f5857c903b40124f4a3028ebb90b63a91bb4a6ac71. 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/TWCC37000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb63e0dc2956cae12691eba813a48895a116c76b434aead9b46409ed4648475b. 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/TWCC37000321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d7db68dbd72359fbe913a774d72faa85cedd348824ea6f77190ba7d12cb06d. 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/TWCC37000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0a88a1f15bee72102a6f297d0a25c7d49f625b4baecfa5c7aa1b5341b94d8. 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/TWCC37000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b99295c354648c121b5a4b18480a24f1e6a441dabfae322021a0d241b1aefd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWCC37000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471125617d6c8e0bca9b00af86fb7368e766d6683a8cd02ac93e56463b8940d2. 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/TWCC37000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d9d063adce15758523464f4d4e601000b7240110da5aaa3e2e569018a94636. 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/TWCC37000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f0d1409d69dd5c669aa922c9440054121cc3eaf0ac2e38f06879f7422a284a. 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/TWCC37000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c3b031abed8d48d141e584caf6679fcba602b996ea44ca842fc46ad1f400fa. 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/TWCC37000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb30f284563da3576d78a095ed260fc538abf43cc5e12aab0608f799c558cf0. 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/TWCC37000425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a4fdac680229a0fd4e167cc42f76e6ba834a005a50eaaf359a47221aac79c. 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/TWCC37000426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3f14a804a246386ea2ef3fae6460519046c9918e566e7761b5d96eed87e2c4. 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/TWCC37000427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992eedcd585680fd39d8410740caaeff77329d84da0f9650e9f797cefbf9c54a. 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/TWCC37000428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7496d08bff640050017ac34d935f93135f9c2a07b67086e3aa9b68caf34ac. 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/TWCC37000429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb933d91169a767ebcd403390fa8286f506243b44ddfbce14c4e7517dff39ba18. 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/TWCC37000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8f5ac787b706ba5b81a2db00901fe280f8eccfe9b53f5efc110a19465c973. 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/TWCC37000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d8bce601b15a7734789ab18a5c5391fa8dbbbfdb7cebb94ec0c1ea193b376a. 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/TWCC37000437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1900965a19f0da2a63d4dce27ce89da3e1e31d7f7e21c39582fc09063a0dae4. 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/TWCC37000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd4207a8d125651c6a0b7f14aebf238ec4c34d124b9f3ea2ae2c70762e411e. 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/TWCC37000439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0069edcc1ff9fad79e0060ee8fed9a3caf22124f3e22f57b718d5b4fa117ee. 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/TWCC37000440.