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 0x205e50b91b91d4815e06abf7cf8db4f51170de3fc1a4e122f31c64b514f9287c. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15dea2d8-a9eb-4bec-ad90-4c1eb8fb469b.json and https://artists.proofprofile.net/proofs/artist/15dea2d8-a9eb-4bec-ad90-4c1eb8fb469b.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 0x40b1a13e442c7a24a86de7305d3a47374e8ba68f2297f6b6093241bdb11a9d8f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:01Z), 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/SE6SA2342715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfd835a148ed319eea77ce78dbdc634784fc1bc26a59ea1b8b1b90549d9353f. 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/QZDA82407868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed662509bda4de0222aa6c8337fae0f329f936f46f650e7a5d630df82619d2. 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/QZFYY2520474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf199d1944cb5bb7e3fc9be55711074c1716fdba93a60d2a866519de21fe3d32b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:59:24Z), 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/QZFYY2520475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e56d67a44d8612dc66c46cff89452d43008546804041b66c95542f6f25f154e. 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/QZFYY2520476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8304304f971bc6493e1bb57405ba487867cb93a00fce545b0ab4ea19cf8e822b. 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/QZFYY2520477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf46718d730dfb75a1c91ece11a8b022848e620439822f204ebb280bf1e7511f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES62564797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f28076139785eaf482f71970ea466982f2a15fd352651c20e3afa5cfe66ec. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZK6P2545538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf46718d730dfb75a1c91ece11a8b022848e620439822f204ebb280bf1e7511f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:46:01Z), 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/QZES62564797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0262dd5589c7b77c9c6210162ad36a91777b349a97ccb437a5716800f91db5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:57Z), 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/QZK6P2545539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ae04ae3a37cc0c18f4f70578cf024fb5b9ca478faf4d798de8084d30b21bcc. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:57Z), 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/QZK6P2545540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4525211382c446a49243d33e4ed8d52b24c32ac4555ca2ec2065bfe5f78380bc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6P2545541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf07da5e90d3a53a33621a3c6ce3f273045bff9b6b86a7d61f276adc584d009. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6P2545542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64089b7f2ee1794f1f5f3dfeb1dea327b1675c824ee677b96f1444bc73547bfe. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:54Z), 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/QZK6P2545543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa16a8d65e4fd1e8754bec38948f1cdd0a878aacacb1b5807ba2538751e242c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:29Z), 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/QZK6P2545544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646a96823ba13d2bbd9b4c306346823c55c2ab44c8623ce7f7079ab0f9483f45. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6P2545545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6910703dba003d8c794cc0b3693175ea45d107b5d8c9d7c7bf661dec4d80a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6P2545546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc7dc50f9e39de2537c28d00400010068b0f9a22a7bdec89971a182a8e67df4. 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/QZK6P2545547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c84d4660a3d7b313026ed383a9f20066b1766f2e991d43ae177ed52ccfc8ec5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:23Z), 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/QZK6P2545548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7b3ab5555df05e8b1161d73c22e2782182ab7b00c3d95832ff2242f055bd1c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6P2545549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb839ed444bc11efeccf971150ff9e4369e893aa02c18fd07d31f3b1b2d5df7d. 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/QZK6P2545550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa60269de6c1dc4d82e7645ce4fb09c65742305c863792758bf0ecf061624aa4. 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/QZK6P2545551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf1938d31b8b32ee2bc91e677940779be8aab83688d683a0d6d6cf64730717. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:48:35Z), 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/QZK6P2545552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f33f3ccb495aaab20395f135db9f0a34edf7ad0f405a74492445f5834d19b. 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/QZTBC2590770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b9b42cf92f80397bf855d41687ecf8c0dd26bb1bcdea16ea04644d5e3c2fe. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7N2563051.