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 0x8cc9d0d847ed2bb302601a5b1daf75a953119c497e7fcbf443e7c34138fbc8cf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77a13ded-4c91-4f15-ba27-4c7824665fc4.json and https://artists.proofprofile.net/proofs/artist/77a13ded-4c91-4f15-ba27-4c7824665fc4.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 0x9fb63d2b3c6be3ebe600e9d428214a82ec45ee0e5e99d5d3d8180c870bc21278. 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/CAN111100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0e70b7892d76f828f87ba2345ba722b92a2e6111495aef03582d7da763b19. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CAN111100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc0a56d7cbb13022381f1dc11f249b7baba2cf860e94160721639ffb1cbb48e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAN111100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ccb87f2b276f21d9dd7d2ddfcb500e8e04bbb3a02abc0f48424954180ba159. 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/CAN111100569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ef7afe4b39b6b4382ec61c86a7c248f99fc678316f7abdc6af8f3f23a0e2c7. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/CAN111100570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad695e694cb33b717500ecf480d53265cd4c95dcab4cef8b45a158417a462504. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:21:06Z), 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/CAN111100572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a841a47f49ce659af80b9ef94e5e041db7de2d30e5a647a340f18225f4df0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CAN111100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36401ff752c72c900fc93f149ebdd5906edddcdb1e43627430812d71e0958ee3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CAN111300634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3f1eec24569aa61dc1b0cb1170fce697caeae1fa4639dbfdc8728a089bf59d. 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/CAN111300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a80f5f196a4e8389b351fdc7bc00d4861e5358cc0342e3048b1eb0d86db93e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CAN111300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04b18f35a45f66cab2cf3a2d5c5284374fc303ac5c18567616a263f5cda6daa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAN111300638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8185ea730465e71aba7e47521fbbd9b02184856432f2ae6df78a8f2820f2d4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAN111300639.
Battlefield 4 (Original Soundtrack) (Premium Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b664e3390f91b259800af8b4dfd966cbea61d8a3fee89d8cbcbaaff07eb17c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CAN111500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25699c28357e02294c528bde0da21f615b47c1f8b3b4e454e2d48512fed3733e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CAN111500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c838a2bdd6480b68b114d943890354e47135e8b23ba57647ab039c90ec37480. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAN111500227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bcdd86db8e2470a24f4cdff36a500497a89f7821434ded88f7514155d8b82d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAN111500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ab1fbe9c36cb86fd58c9498c5b8164050d285074bf901076181b70238a629. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:27Z), 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/CAN111500229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a977675378fdf10aea7dae6180688b6e7f620a46686b17783f10649e580704. 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/CAN111500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4534835887bf3f818375fb9ddd8770c0a829506debcca5f9efd4df031fc7aec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAN111500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aae760b956741caaf6ed8e8d4eea70b597b8fc94b48580d490c3979fadbad5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CAN111500232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c2cc1780a9be5c0af386fd80efc2905bd928ddfed88d7eeaf25ff625d97dbd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CAN111500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc529dc4353746d056eba7e88bcfb0bdc44efdfba2dc2752c068266daf5a639be. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:24Z), 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/CAN111500236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712787df684e74b56961b7d52d50951c6ac501e062d93047c9d861ffcd425670. 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/CAN111500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9d0fd434add4972e95919de6a5207e4de8b6dada26143425799183c2b9636. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/CAN111500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb500f54bd5d38ff62a9818bbdc184571ce356ed3975e9f393b7942e566ea68. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAN111500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08081648da1851550760e54ea79faa16f0eddd1fa1d9fc2c23cd17b233d0abfc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAN111500241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb641327e19b2f7d035b00e82b9c60f5d36b6f242d3be3fc194ba78b041a3fefe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAN111500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0136a337cd3199acb64d31d007f1a3bf2843fbf467281e95f6bf2242a5c2746. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:41Z), 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/CAN111500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b34dcd08478b07e93ab9bcfdf96c550d3a730960b83995af3424e6bd219020. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAN111500244.