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 0x7153a5bb260c0ed50f147dca6b34fc2c652eafb75e726446252c36fa86e19a5d. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db81d35b-4e70-4563-b4fb-d7e861423bf7.json and https://artists.proofprofile.net/proofs/artist/db81d35b-4e70-4563-b4fb-d7e861423bf7.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 0x4c200b1f4ce6464e4cf694d8cb1eb6b39ed11c34d7cc1b98d4e595060786cf51. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6H2597059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd491d3025d82a58a6c0a3df0a4289e4f4cdb4bde4a78a9acd7c7c1c0339fc183. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6H2597150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3bd541a5b74ef0c257650794446b6946a2159e1cbedbec2ecf02b716054754. 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/QZK6H2597046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc1a33f2d870d84b3970ab703aaa6f239cdc6210bcad206a000cc9bd58848c. 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/QZK6H2597152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7113ee3c7094fd8c49defb8c8fef8fe526221fb81a2bc9e8e2365f7dcb2accae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6H2597060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d17dd46e831ddfcadb9ce06e37168c9fe053ef6b67327f68bb001e9478cd2a. 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/QZNWS2513421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374aad87d32d900fd89b929b6e54100ff87ad2ed8dba75c8c770e40f3e00dcc. 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/QZNWS2513422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6350ad91108cc2cb21224f91585dd62d721e4d0fb24db7739c19457d741eba6. 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/QZNWS2513423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39234d4d35217eb22c58ba9b0ec6cd44252718c8dbb1cb45a7bf260156e3b95. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWS2513424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef0861ecacb01c952170dc4cd83ff08018508ebb592b22caaecdc2bb132621e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWS2513425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a9dec6f41423acedd73750d5058e9fab5d23fef62093436c978afeb416c4f. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNWS2513426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e4fb3e92380a03e70d653c5bfb7cf3435e56775dee3da9b744b42a3aef8aa3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWS2513427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106fb106443d00c5054b8226e1c98806721abc9a97707aae7bdb5b073480b6a. 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/QZNWS2513428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6719cda0c1b49f28c8e849e151e0b8379205312abe824877204d61dacaa1b81b. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNWS2513429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a6f7c5821a6d39728cf39b8cea53e4644977afdbbbc450b2a086ecc619554. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWS2513430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28336e283eb8c30d8132eaedf2e679e026c0c618bf0cf2165efc14f265077d73. 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/QZNWS2509765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e4731ae3e4512504b256d20ba9373f752afb0c35df7e5fd3a9aad1afc6deee. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZNWS2509766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4a0a54aa595bf15e605bdd6b720ccdbbe1f73fecff08525de6fa7d8e0879e8. 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/QZNWS2509767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cf869a099939e8cd03af76eab572fcd0412c4c4b8dd8b21ed56515da7cf147. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWS2509768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505c6f1c474c96115bc564338b842174b0fb71a12bd0440298353d1fc6233deb. 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/QZNWS2509769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ad4079ff1014c130a228560819fe826a1e0fd04e517a41ebe54a7ffa32f83. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWS2509770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919885910b74f599838fb6adf42a6ddfcacaa606d0ba47bdf1dd0c0a8b7623b6. 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/QZNWS2509771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e0f5ad00eafe144372adcf04cfb8653caae48aae17d5806292ccf07c0e9433. 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/QZNWS2509773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b61a8106c1f190e336792a704daa11a356b9a99b28bdba699f4ba05129cf7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWS2509774.