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 0x3c41e3e58ce464f8d28a4dad24384e0b7edd4d215757e4991706562671c4b389. 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/f4d973b0-dae5-4712-8899-feb315fb424d.json and https://artists.proofprofile.net/proofs/artist/f4d973b0-dae5-4712-8899-feb315fb424d.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 0xd0fad06aab63b1e94d8c1d6f4c60ea49665ef78a49ac361de4f815ecdd629124. 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/QMUYR1400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e144aa12204f3de7dba99bfd7c4ee0e072782de7c935314de475d1c18d0f03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMUYR1400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9b24ea08a2b05c885718c4aa40d36b606ba89de8eb883e88be92d1c2ac816. 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/QMUYR1400316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee54324e7677b82a085e569d0b7f2fe81db3ad1907f31590b0894d3e637925d. 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/QMUYR1400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e16cb391baf11562abe244d8c687001abc3af1e31ca9fc78b1c450422f5457. 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/QMUYR1400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ebac43ff8b103de3a7c9ce7a898ce384db7e659006cd3804e5d1b84eee21e. 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/QMUYR1400319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3928baf3eb90ecfdc07feaa3ebfd744a4651ae005ad0751f07772baf1214a4fa. 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/QMUYR1400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68409c8bef149509a50891c0b50e4f860b9140c8c2c8b714ad672b4c70b7417b. 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/QMUYR1400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbe195e19e44fee560b5bce844b8a1af92be7d044f9d28c77bf2df95ad71184. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMUYR1400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b84bb2744f3f0f939091193f542385025be9b063898239cc48f0c60f51cd45. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMUYR1400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1953069f511f46aef8cce1e91a1358b33cb172bca671b9bd705c10edc27ab7da. 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/TCAIE2472444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb12cf5c9ac5cb616fd91372004557132c6b6b1e476e2a02c25fdf78f10792e6. 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/TCAHQ2391831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cac4fac3ec4a5bd462968fd87762ac8ea45f4d6874d16160688883b53a0e66. 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/TCAGA2271413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f1922c131dbf699a4f8cb43b251571998ea4b660a34d15d533956af5343287. 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/TCAFW2193058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a6327032ca6d84ac0a8747b393c5df408927616aabeac0a4025a35d1214728. 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/TCAFS2189020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d57220346ee5e6a6f21c17ebf2160afc0f33f6eb295d68da3fe30edba59c20. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFP2100648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ba7316348062780e57d12e9e12d059c04031ac3a5b8b323119dba186c8f184. 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/QMUYR1400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4895c9e3359156bcc4e80d08e22a6aedc1f5a7c2b17557749fa903ae635c3. 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/QMUYR1400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8d43db913e073734b8a3c184bce7bfcb1219da1ef7104238e822552ae14dd. 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/QMUYR1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7c607ceaedd3f8445e7bc83c632aa1af735b38c23cea2181c0cb8494b49f01. 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/QMUYR1400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ef6715f5a7625aae34ce7fcf89195aa758ad53e2a3abe9733ff6b40a6125b5. 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/QMUYR1400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85640e5e91c6b85f720606b588743320b2d4bb5616d35a76ef23d5ad55a7829. 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/QMUYR1400046.