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 0xe24b160d104afd81e7703be5e5633002ce2ead22e54ef674a89feb137997b135. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c2e8192-02da-45ad-88ec-820f8983df3e.json and https://artists.proofprofile.net/proofs/artist/5c2e8192-02da-45ad-88ec-820f8983df3e.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 0x153b8c11f0e0edf289a87edb061ce6b48253c657e79da9cb1e739148c88f5e0b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USDY42024512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e45ba09858f81bf4d91a6285344cadbc305d4d83581b13a5f603700c96a071. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:29:52Z), 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/QZK6P2202852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e326961bb75ecf8d34f05f0bbc1868b5dd91a75e2c54fe8690b6c718e176805. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:49:27Z), 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/QZTLA2479368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2cf6e2e3adf12cf4a96b915043832298127cec3bcba133c36d6f915af22cf4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZS7J2488311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660da1c3a82935d597bb2716ccb84bfac1a982cac9cf39f8cb983f195d309d81. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM7MR2205561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bb9d6b5abbcc9cbed96403fc93b743153e6c74d30a06914604ecd0040dd466. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QM7MR2402708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e95f2f92f672db1135a3c3993c002747261ccd98f0744293d185e8f5d1522e9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:44Z), 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/QM7MR2205563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90e5968fd56aabd4524d96e26dc5f4754eb9ca2a8b09a4caf167205469670d3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM7MR2205567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30edbc9048f8005822a650aec1e22365b5e3e272e017688d22f17329ae1eaa5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM7MR2205555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb342a086177c4ff0951d2a1fbe90a165689ca18d84f7a0df26b42297f06c2a1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM7MR2205566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a52d573543533ec786be7277cc73be65d6bc2ba0642462e6d4a4e7fde8ae3a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:48:17Z), 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/QM7MR2205560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1697c8a3a06b7649554e6ff6773d574b19fee87eca3fa24e0d0d0084e39880e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM7MR2402709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45bae306fdc55eeaa8535ce4cd68f2a19dece8c940c72795b0aab72c4045c1d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM7MR2205577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0786f7b1d6758bad200ac07b9c0e0580aeded138c2bcb5577a0a777035d33b1d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QM7MR2205578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534fbd089a9a3cc5f99e9533c0586535c718ddedbf1c06c0f482a4900b0fbfd6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:30:31Z), 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/QM7MR2205579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c55dac249cb220a038706cd5b8ad945efd0a2037fbadada7562a865a8ddb8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QM7MR2205581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195b6ebcb9a73018f8596c9d68636555755a7900542b9ecbf45b685e989a8a7f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM7MR2205554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d66099d183cbf9a22a9a7a9cc41101cb17b91e619ef430737faea4da180ed1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM7MR2205568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b21f320ea3d16e0dd889b7ddc079ed1e78aca9de25b86ee0a00f0e3d2853a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7MR2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992c86875fd66a1631c6d85cbfa8d32377eebda269b26747d290a79bb3ff65b5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7MR2304296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098e47801c636294052151bfe51af61b66168aa4d96f3730aa9dbe4d8c026dc9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:22:32Z), 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/QM7MR2402832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec187543ebea13ca9dd6cfb8bc6de9716a3539721787f2fdbe27cb4742fc7d0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:29:41Z), 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/QM7MR2403013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f41edd9f6a982d13fe1cb4dece3d356fd2c69ec7710ab549687026510f5f1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM7MR2403129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995c53031a9ceb8b178faf6e07dd8f73bb6f767c4028a76ee2b5fa979337103c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7MR2502524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1146981ac1959d34785afca0b5d0dbbcea492211873bdd9070870a7f9ef0bd7e. 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/GBDMT1700422.