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 0x0da02ae903dcdf98aa67b77ef2f148ba1194454f9aecc7a72acb6766c6c679dc. 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/96dc7921-d79a-4801-a5b8-5d719db67d52.json and https://artists.proofprofile.net/proofs/artist/96dc7921-d79a-4801-a5b8-5d719db67d52.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 0x6513734454983ad904487a5051b84a7cd338eee58f3d80dac90134bdb1e7024a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:40Z), 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/QZNWX2186204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524b6e0b8e7b216875a34c7f249102ffd7fa9d2c71957c212f5372574dedbd8c. 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/QZRP42138532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee666401ac86ebfd886cc6dfd7ecf2bef4d2e87a1a0881417f5342655bd9451. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZRP52140223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0b5d035bbabbf655513e1701014125c592d87b79fda299abfd907d279735f9. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTAU2256305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3957ec2d6b516b13131f53e7afed99acdd14679cf4b5acbcc688a9256482d476. 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/QZTAU2256307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bace969bc3a450a24522062e4b84f4f8c6d4d06a8cb81e5bdc4e72633b1b1b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:22:33Z), 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/QZFZ32401239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4866b3f946c479fcb1200dc3f8de75833ef4a445b0af28cfdcba36fa089c5795. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ32401228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92721a258c9992cd129b09f0c2ab9d3960b2911b629f499eb21178413e1440f9. 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/QZFZ32401232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfeb29cd04782be716140d1ef979691f3bef4e5900e746e28f88086b4a1cc6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:57Z), 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/QZFZ32401234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e39f6321fce7a54aa9fc74d1d2c396ea83c73e4c0a94f58d57c359afca49074. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFZ32401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4866b3f946c479fcb1200dc3f8de75833ef4a445b0af28cfdcba36fa089c5795. 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/QZFZ32401228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92721a258c9992cd129b09f0c2ab9d3960b2911b629f499eb21178413e1440f9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ32401232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbfeb29cd04782be716140d1ef979691f3bef4e5900e746e28f88086b4a1cc6. 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/QZFZ32401234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bace969bc3a450a24522062e4b84f4f8c6d4d06a8cb81e5bdc4e72633b1b1b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ32401239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e39f6321fce7a54aa9fc74d1d2c396ea83c73e4c0a94f58d57c359afca49074. 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/QZFZ32401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce1dc2adaf108b96467be55ad7762904a02859ba030d10bdbb4ca7450f031fa. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTB52402077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a89778ed22cabd6cd08baa558cb970bd9942ee622a6bc66064b870e45d7ea9. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZTB52402079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3328e50fed2a71c185fab68ab340443b0ef70baa409335eac9f28d74545fa69d. 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/QZHNA2512604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6b2e18c60c368071c8f425a736906a0b2bbc745ff2bcd5deb5d5ccdf7615ae. 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/QZHNA2512609.