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 0x4056ec1146c9c1f22d80c9171367beae7323546e514ce56ed0644a9df270ea2e. 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/eb1b1db9-f272-4cbb-ab83-794cf31a46b5.json and https://artists.proofprofile.net/proofs/artist/eb1b1db9-f272-4cbb-ab83-794cf31a46b5.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 0xbb845cffb09f310ce71286b0419318b630cc6c1a6cceff6f665a8c281f8f8f25. 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/BKLY42400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1663e73d1d777be99d0bec72b1668905c268c24f2d419bbd0a9f9a55ad10208c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKLY42400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f40631e09da68aa1596bb086069661412418781673fd31a178b219660cab054. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZW9K2411351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66368e608753a8ee305aef2eaec8fa681516f1d49109d14b7a9bf84a37ef937. 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/QZW9K2411352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3e640f8182f23903256365707a25e02942b86207d8deb4bcf375ce789e6531. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKLY42500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fe8facff8b3bf43e2544d95ba90fdcf58986a10b53134d74fad21792e8cc52. 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/QZMZ92519779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b3f435d5dc72519db4b7c8e891d944343bd84eb01b6a4a64ef8132baf99078. 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/BKLY42500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775ca4648abfb87da5a43fcf0a569d80f8c4d7a798830360721d21e02d2d687. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4442400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955681ebc95017628c1143c0038b7d3451024aca839b9634ca99676ffd435537. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae82c3f93397749077279e417041165ce674cdf955d25df6d257699ada191fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2479665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae82c3f93397749077279e417041165ce674cdf955d25df6d257699ada191fd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2479665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f410a1b729dfa6e80ddf05e8c08e988b0a9c2117ff4d2886130f59e67fe58aa. 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/BXJK02200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bda42f466f9a237ad4b626cd02b2da3840dc2116c03ffa446a37c5750ba978. 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/BXZPH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bda42f466f9a237ad4b626cd02b2da3840dc2116c03ffa446a37c5750ba978. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T18:38:36Z), 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/BXZPH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f47fb3727d749746722cd1add680f64c9c884b1ec8a01210d91a41c06c5cbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1508152cf95a3380edf9f08e48e7beb86103a3497aaacb0b2145be0337acd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f98d798fd30a67337267f23bb3ee6bc619fed4fc129a24dd15c35c963f7d06. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2200982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59db8d5383a9260454f0f551c4db27a8db2edc5223a06b413fb14e8c4b53d7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2200990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f489f904a07cc265ab64fb3c0a0014a107c7a2ea77855db494bbd863c8e83. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKUPE2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc685aed1eed673d918579552072bc11940766e9cc3e71bcab40ad1d4416b7eea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXG6R2300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206ef92b20917b68771875edaeea1b596eb031a42e41877251e94139e7096f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXYCC2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a70590f2458faa1a6d8907c75d456f94b450763894e96194e3ec181381c26d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCM9A2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831d57781be26b33ba28f8c004473b2933a74902f62085481858e52818a39ede. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM72400336.