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 0xb3c5430208a08be20718ffdb0a08344e8647a40a5b34d101d0ebe2124ca1d254. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de06f3b6-ac71-42c0-bf5c-f6b8fd0b6ff7.json and https://artists.proofprofile.net/proofs/artist/de06f3b6-ac71-42c0-bf5c-f6b8fd0b6ff7.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 0x1363f63b4b9cd2e2bedba217dde17ed52e043e89a9b03a80c7404234d4745403. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:26:42Z), 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/QZLQU2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc847c01dca1f723bb2a9a61644a3b56b624e458bf172fb48f7388f9f725bb1f0. 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/QZLQU2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bf1be38dee2c5c7917e18ff89dc0c8386110e894bebfff99128dbef08422a1. 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/QZLQU2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc027d5bb06a832fb8470e5ede175c8ff7363aa212f9e590a291b20053c213397. 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/QZLQU2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c094b2a3799e9637c6195064f9391b022447ff35925c00ea0132845c3da898. 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/QZLQU2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f69b1c4da60097a1769e7006f2185afeac61a79d3090e8361f7772b6d2429b. 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/QZLQU2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c7c9e6ffdec7a931293817fb35315dc667909a0714e3a33d3a4210a304bb5. 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/QZLQU2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b51dd88a0268c25b9f97f2dbd311594d098c6ba0ebdcbed0a60645de6b97e0. 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/QZLQU2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf2f210d76067b686ea0f1eae408e36f62d5183ff007d73d868dc9124c541d7. 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/QZLQU2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc3619b535f1433e4f951f7bf66a16c31576c5789c9964a6450afb11bcef50d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLQU2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bc7137422bcc1d48aa39c2206118e46251b686c1ca55cf7425be669a0368d2. 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/QZLQU2000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65729f6527920ded39a2a063e81629d0edc26e39190ed6c3a330524b55d609c. 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/QZLQU2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602ed90ecb89b1d99bd37bf71b007d777d54e5dab38d74ebf1761a7ddf481fb0. 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/QZLQU2000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ff9045f423712dd52708e200b0ba4ebf8c9fb8fa55ed08149ecd808ab8b96. 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/QZLQU2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197ed40c05386e58c4dea098d1d9d3302b9e77010d601e8ce10bc2a2624d775f. 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/QZLQU2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b49ba4707f21312ebbc4279e72456d63529468c29a414b871aa149b63067f1. 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/QZLQU2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60929c029db262614e8d2105740ea4dcdf55e885fa1c416a0c25031d928faaf9. 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/QZLQU2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf2f210d76067b686ea0f1eae408e36f62d5183ff007d73d868dc9124c541d7. 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/QZLQU2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f6b727c2eb24949da61244eba8c5db6fe996601f77451fc33c7d934253f59. 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/NLG661400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11471527ef2bd24a4fe5ce07d1d35ed7231a9bfbdb6a6977feb23288d5c620ea. 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/NLG661400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1ccadf8fa1abbb5a79a6184b139f05996a81f922707e76cc454cccda38c256. 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/NLG661400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e9c747d8d947a2291039e2543f22868e2fbe176b154777f6add7508726b151. 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/NLG661400711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4029e10724961c10aabd2ecc25ebef2a88abd234e836810aa0eff90455bb6dff. 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/NLG661400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87108e47aa5e11c89afeda8aebda9fe0ba12ac1c4b51170022b4e6eecc2e4506. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLG661400720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a949a6ecb50cacef5ed7dbba712e0ae942441b861636c4c1e2f22c97db334af. 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/NLG661400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859334a101ccbd4ab2cfdd18d46beabae9fa40a9a3c862d793cc5c0b179a07a7. 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/NLG661400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a54a973995d888632d13da841d6b72269d60153587a4c7d0ea77c9258e4277. 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/NLAM41500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c438a8ff1cc2d8120ca923a15148a427a1b747c091b1eb11bc0b6302b6b8399. 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/QZ4JJ1935208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3404494a4cfd4486eee828cfca02024b4bf1cfe0c0b563cd6185bc1d014821. 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/USANG1925032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ff51b9204ae5ce06c36896e5af74bc326d5b72a743e2a457db393ae3e51eee. 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/USANG2167822.