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 0x305bdd9b181c9bf41737657a5b8180c70c6f0ca8183a0a9e5fff9c5aa3712c7c. 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/b28f318d-bf06-4cbf-b83d-6a9a5c721b81.json and https://artists.proofprofile.net/proofs/artist/b28f318d-bf06-4cbf-b83d-6a9a5c721b81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historia De Un Amor (Boleros Instrumentales)
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 0x9fff0f013cf2cf0ac19a543e0b916ef5ec1ebc2e1d8eb82c22525a895ce1639a. 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/ARA820600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9260dcf2f27e025f62b18a5e112f8b1e8804843cfccb31d74e3b24e240ec2c2. 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/ARA820600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a36e6617097a8c47ce3d447f911bb13623d8e94ee9a5c3a12b9f8f36189003a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ARA820600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1714f935b95b797a6a46db4e5789fed4555e2bb1f3e93e1dff47ed2221de7ce. 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/ARA820600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a391d4ffc50897a2d4491d914894d963767893e93030c136e7bd3e0b2537fae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARA820600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9780612341d7dfd1bd1a590f15d5283ef6e62f43f9e8408eb7a3e1bc5814ec79. 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/ARA820600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e6ed3bf073cccc595ef12072d41a97dcb4fa616ec1c1f62ba9f62005594e51. 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/USHM82006327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879911594af70a42e88079c6a79d3002a37266a458e510dea98b4f28d00d1615. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USHM82006329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e98a82b8a5a97864ababe3edbf78ecec4326bff563b8dda799e2d70e0d3c6. 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/USHM82006331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de6d3a35daa2b1df8179e1b65f0f22cda30df928910977a9065a47361eb8e7. 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/USHM82006332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8001ef799e2f16b30c55fc9647c9325c6c041307132d1cd05ceec7281462e78d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USHM82006335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb195e2b4781e9bd3eec3e75425de2943dc5c0fbb798077f6a7cf9034cc4db3a4. 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/USCGH2290677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51e13a85d6a82683bee4d057eaf8a0d7a4986f375cd788649a67e995bb0e900. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USY282310480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc690526d7152651d8ac80819372c38f66492b152995128795ea753518ebbd663. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USY282310481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77623243e70e76007c13534f8f9a9278ada8966bd4b7d66c5f146aa30ecc1290. 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/USY282310483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96e7922abd8f63c551a6a03303d8292d3b14e526bd8b9bcf861b705632462a5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:27:50Z), 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/USY282310486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cee88b8ea490777a80108eae2ec2bb7b16ac9a8e70c036321e69153ed80b56. 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/USY282310487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581461a577c922b5109301641f5dd4b24194c635a0b471c9b32d4acebdc4de4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:25Z), 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/USY282310488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0cde997a59c2869b7bc40239be92a99f0cee898e775b25c30cdf250de8a53b. 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/USHM22534147.