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 0xcab564b91689f9321e32011616651e1fb4dd24ea89f4c8d890d7c633a83c81ac. 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/854f2656-9b66-450c-8c8e-da00409ab28b.json and https://artists.proofprofile.net/proofs/artist/854f2656-9b66-450c-8c8e-da00409ab28b.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 0xf8d2445c7eb46ec6a555b905f19968af4da25e3844873960d9da1251a112b5b0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:47Z), 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/INS402000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3772b757713e4243a0fcc7d07ec4addfedc13c54f3d7e10b0db0ba6e1c658b6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INS402000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc7ba813f8d88cdbfc02bf1986260edd4a468868664081ae67b5ab52a6a7693. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/INS402000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee57ab6ecca65c1be137cdac2f690cdcb0b264bd95ea513480e7ac0684f5d67b. 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/INS402000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b7739437e15c2a269412cafd7099f783fbedb56992298dac8bb7528bbc1a3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/INS402000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648668926466c998f34c2fdced6e8ed3566418f338540746235c46df665001fa. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/INS402000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3110059efd7c92842e40bf15650c6632c808f93ef090a39f16a3ef7fe2299d9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INS402000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266cb61ed83c1c8e10288444ee27354a7073646c8fb78fc7dc3a26c6d93e6c09. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INS402001687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005f0d5ef657042cb04ace4286ddf13484b95f9870feb60fb1389fde67febea7. 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/INS402001690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75761ee1d04da2746fbccc5132e2e22b124cab1ada73737f09767ce7a21ab48c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/INS402001693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0fabfb856efef15c374af4791481999dcb7b29c30a0ed9942d0eaf9f19b37e. 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/INS402001694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acbfefe06b9358d5ba3f5725839d9c2b4eb6ec3da74ff3686871164565646fc. 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/INS402001695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb563c2ddf2e36056a7152e563ab111474cf3b28ae5838b160a4e557398e0bc. 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/FRX202136601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714fe788c2adbcd75c228c0e4ecea627c3e20c2c079325afb13f3be3747dd3d8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX202120288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db5b2628bddddaab7df181938ba7994b67c493a21478729ab9eabd5c0b9c7f. 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/FRX282194877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031263b67a4eda9bc577bd02e743d46201a0c5d86a52e0775663ce42fc5c97f7. 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/ING682300433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea596e0f9667ca3c34bff97b199251620fdeb5e655fa6b8d2454e7d4eff290. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/INC622214349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bffa6d0b7cdacaae8bb942fb7022768401ff189bffd7fd18c23057000c2b131. 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/FRX452425800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449fa6cb51ed024c197787c65cbdaa3838d9bc66d76c7f3c2e9e8cc0f4df8afd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUBEC2444569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b64c1fa7fa96a0647b01e9b26e4e1c6a53707614e2229e7c1ee428c2839f94d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:05Z), 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/DGA062497543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98745a72bd0d82a2d8fa1e1b609d3233115cdb4d2ee84cea7faa38af3fcb76f2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/INN992201681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af927547ce7a00f5ae5913e6e4fdd209cd24cd475edd2a88007b0df79ec3337. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/INN992201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1b22d5db23f887a26d9cff4c6fd707e68bb3a71aa7809e8dcc40c62c20b170. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INN992201823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a8e99b64f209c4db7c8b54121c113168235513978f383470b0ed97224f878. 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/INN992201839.