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 0xd641de9037d448162d8ad7509d4d5272166483e6b8f29243b4cc2b67fc70d323. 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/17442c9a-ddb6-4c1b-997d-543f1d307de4.json and https://artists.proofprofile.net/proofs/artist/17442c9a-ddb6-4c1b-997d-543f1d307de4.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 0x51d6a27e30b90aefe58d91a5f6ec6eec14f133c5c82c0cf49664b9c63a505a7f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJY2111562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04ea1b4367394e47344b9369ecf36250aa0e5621253a73ce4b12253ad22455a. 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/QZNJY2111563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c7044cea69bd51cd0d703750ce4c45135243db578ce34658e23890e471ce81. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJY2111564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a4622bf5e796c7805e063560e7ab44fe34d8033c6e91b08e7da9314d6de6b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2111565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2893eb5bfb864dcedc391ac514432b63a4ea31450af023f1fadda0aef2ef0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2111566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ba2747e87fc2de037f9a24e6019d14c4a930d62e2acfdbc179c90285c08ab9. 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/QZNJY2111567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf82e91051122e6ff04bd3151fae36e1da4e57c76e5ede2aac28504c723d1934. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJY2111569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee997282ae1c3405e4050ef46d01e829618df43e286f8a552384326ae1759d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJY2111571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb80e31fc10d6e0e1a5dd4cea156639a0273bf858208e664f1332f787ec9fec1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:21:01Z), 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/QZNJZ2267062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b79be2e496dbe7cca614f86071e531c72316dae346ace8c68afd5c3d65c117. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYC842420379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f49f13f7e8e9650a46d171b2d7710e1e917fd26388a613172b25bfc86a2e3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PYC842421213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343fdb3302f873e29b442283488611bf9d15b74510b09d87e0a74fb477db4bb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYC842421214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc2ce1e90ff004ad6b84b9e0ef74100c73c287c96e0b640617bc871c59690d3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYC842421215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8736dc2a6ad8a706b261fe19a571450bd22b925a44922cf673f640c6232c57f5. 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/QZW9L2329414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d88839224b0a2dcd1c6dba26da546fbefca7cf7222dfe9224d7515ef68e24e. 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/QZHZ62238306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1577411317adf821558644503e10d576c9d8210988512418e4b0265e287d1856. 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/PYC842421218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e0b208fc60bac6ab3f48db8e03689980e523fd1bd5457947c6f4929931d72e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PYC842421219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aecfa1aeb6327a8369ab9c4d73f19ec622bf65289b71276b9ccd79862888299. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PYC842421220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2a9d7b72b94fb23eee63f45924b0bb0ecec95fb092c894ea20a7bfa036ae86. 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/PYC842421221.