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 0x3b183d77794e4273231ef2ce462daf10e53da2d63609912293944814690d3d79. 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/860c432b-7c39-4ba3-88d4-586a7179188b.json and https://artists.proofprofile.net/proofs/artist/860c432b-7c39-4ba3-88d4-586a7179188b.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 0x3a6fe693fcbfda6cba9c9e433700ecbdfaa0a6895f1ebdcd2af39a7601cbbf70. 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/BXIV82459926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5e4c5af3aed301525181b63508a3b0eedfc6183842ac83204a04117425aa8a. 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/BXIV82415219.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f14158206c7a3d003fe11ee5d431cb8ce4a7fc75890492f0e2d9a6c5900f7. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/BXIV82444411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0df5c834813eb6645cc50bcb8d066e86bac90ff04a877cca8380e0ce6faef4. 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/BXIV82443081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2ec5e3203995262cb913cf337c9f228a46547f005635d4af6f33a44704cddf. 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/BXIV82441198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523ada1e2b9ca02bce51aa705bc761c663c99a655203ddd281c9776a6835ea94. 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/BXIV82428888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283ed8ead48248b06232e968eaeb8ffaa990f8b913656b48e5833d2f5082f06f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BXIV82414322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc766eb63d7dbd6bdd1c7b63d0ad400fcc4eb7717cb85ac96c80d845dd8c74d4a. 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/BXIV82462124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3c39033b71f1a6e44d64e0143ae22b783861350f324f9d6c77029529c2cc51. 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/BXIV82491158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fcdddcc5ebb73de1ca534822fa7d0ddc3ced9aaa652d46879e1ce92997d7c4. 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/BXIV82414287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea87e9d1846047d599db90999f3a7513333fa43e478a80d06d2e3c6c191d5f. 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/BXIV82447550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21af1b8d787d7dab7a616d58275820160719899624bbb7199a70c0c09324be5. 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/BXIV82448232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed4b9bb010dbbca699e49783cdd589b92b1f82d9e5dfd9808d4edb89b2f011d. 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/BXIV82372696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b2ea268514bde98391d6623664afa84d812ebbf1e30159eecb780936db6c31. 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/BXIV82391281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8119a11ed25bc3f5208a0b60613be15669aea2b36403a0febfc6a081d97efb. 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/BXIV82354210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31138631fa05e2540a4f5c29c10e1e13891ec9ab38e134c03d1c2dd813217055. 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/BXIV82321938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35d0f1928713239ab02b58e9bb2b5b1d138ab492f37ea2b061454373541d85. 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/BXIV82378463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4932562815e93d320ce73d6110408272e689eb4aa95f7aae7abb87eefe23f27. 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/BXIV82364866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e1aec42bddfcb07f2d0f3df685c919feee41771b00d31bfefee8a47d518931. 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/GXBAV2548344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee384e9f4ceaa4b598a6dfa45b1bd621713e6e1a6314dbecf969f9d0d5f22d0. 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/GXBAV2577601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf3e49e8333acf0ea2e93c6862bb590c6ca2d01e0f69beca2d686effdf9c8e9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GXBAV2550129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2b62cb090760ab7e0d51e335dfc28366b7d0c89c251f1a04aafedc84c9d0c9. 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/BC6M22404616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0310174de9513d13f791d8a4e4ff23378f12a6475cb3eb0dbc66daba206f8590. 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/BXIV82476458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a777a61280c6e959352e69a0915f6d2de984db1408a23afacd41758b348e8d. 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/BXIV82448886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2763cafd69553a40b869f43d1c16fede0e61502383bce71faa041c06443239. 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/BXIV82443141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5344efb37c02f477fcac795f697474c72d4b910c621a4eddc6af574ff2bbda8c. 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/BXIV82492749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08c85de6374463e7847ec4b1343105e73257e1d5b63e0c99974bdd0257ba7b2. 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/BRSVB2514806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98439961e075219a07d1d7d01d26972f692eaa7cd051213103116822ce4de69. 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/BRSVB2514198.