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 0x3e05898b82681ab230fe125130f7fe75d37ed3a1a7963eb412721bde26bcf435. 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/e021be9d-74d6-457f-b7c0-3dcbbdc1efcb.json and https://artists.proofprofile.net/proofs/artist/e021be9d-74d6-457f-b7c0-3dcbbdc1efcb.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 0xe8df49593fd713f9eb023af39b2ca26d6a51e350abe7769ff1bbffc18724265a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:57Z), 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/QZGLS1961676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455ace9d939679a2a39432a17b9341a2aad6855fee82114f8a24a901c49aef5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US7VG1999243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efafb48636c6d9f9efe8c13734692f81dd7af60f0b4eaab21da55dd757bf593. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHZ41990370.
We Could Listen Some Music, We Could Dance All Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de480ec4b8333b2d14ff14bc50bfddd33128a6eb96a81301e3889c02091136e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZHZ41990372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad70bdc99d9673a68fab41680e142026c821975fc2148c113cda495f416028. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHZ42158583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdbf9c97ce1da632860c0dd5d81339cb47214e5871350bcab2724735b1cfed4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZHZ42158584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3667ea94aa000ddf2f8326a6178254829124b6a6bb431601e63b4ec928d368. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ42158586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942bc98fe3e17212491be05cb695f22197849868b12bb5bf8ec76513dcdf7296. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZGLM2225188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a1ec300e0d899fbac49433e9a050abfcdebac01efddd662d2a4da2c5065099. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLM2225190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd217954b90de367a38bca5a832d0d18613f2a25b02949db66cdac0c8ff9d9563. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZGLM2225191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a24f48182e562a99f30cd806fb73d2e66940e44a26f05245a2cc1c59874467. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGLM2225192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298645601148c35fdc1f9811077eff51a42528a190cfa084481b1dc629275d7a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:25Z), 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/QZMZ92200853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106335cbc8acf4022d72a3209d6e3ebd7e59eedde60ac784e2c11077c7c77e5. 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/BCQKE2200033.