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 0xc833fc0bfb961c2836e7a18b61dce44b54af7b661aa504e82c317a912e6225ed. 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/16558aa3-d979-4b5a-aeaf-92dd3e3e53f5.json and https://artists.proofprofile.net/proofs/artist/16558aa3-d979-4b5a-aeaf-92dd3e3e53f5.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 0xf6350ca36f92f2da3a562cbf92d4dbfd28f927c029a9ee3aaca98aa11211298d. 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/QMRXW1200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816101781e021179f01d2f1f9c7ea8746e5fa51a1605e354420c08356ce96f24. 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/QMRXW1200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea9ba08fe1242c75d4e6bb7ae5962462acb4dc4b858814149c0094dcb0b00e. 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/QMRXW1200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce94d717ec1e9de650c31382c564c9a7e6c9696595ea4d95ef7e03d97948913c. 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/QMRXW1200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b91b427fe1a48f43a53fd27aa50e772ca39929750c793c3372b94939e2a25d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QMRXW1200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc18041317bac8bbf20681f6149263127e57f65725f17e6256c1cada4fd496e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QMRXW1200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25de8c40543b250b00ddacf5416c423ff79981bfacd1dc91166b67747c09927c. 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/QMRXW1200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7038bc7a8274081d8bdc119586ce1cafa4da9863fa53f47cc8cdaaccd3539131. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMRXW1200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b56c0038819a8f5240d7c4488613a008442a5f7730caa037fea5922f55759. 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/QMRXW1200148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9fa5ddf4c50c4d3976ebb772d4bc2805e827b7cdd7304e0855bfd8fb8b8f9. 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/QMRXW1200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b8e6693b6c1f26517a946c74866c064d7e852f209f094682e5ebd895cde03. 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/QMRXW1200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405466a282c19c0e5b5b66800a253921251efadd22b5e441739dd6ed972b4f34. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMRXW1200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3ed7c9f1bb8a9aa178fac51620e321e9a40e104521c3ab0f80fc94d98a4356. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMRXW1200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8676916e8075c2ba67a7a15ee1301b8abda9d2fe7ce5d43d49e4204fdc08e17f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMRXW1200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aa20187f1867baa001083877e877aa5a3857b5b3aad5d576640314a5e43bbf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMRXW1200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcad589d7d72ab6fb0c9152a2ea48e88dceefae047595a36df7a3ed91796ceb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMRXW1200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04000451455375c1ea1ced651abb4114e26ff48caf068ebc54917215235b5fa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMRXW1200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404e86de520924e4f6112cdcbd671ba43b609ce9d730fd65bfeefe685d07be95. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMRXW1200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ddaa0e218335a03525843b86f1d40683b6350fb5af1f77cf2257e5b4bdd78. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QMRXW1200334.