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 0xc2e9f580cc8bb347becd8a437e6db89c5bd7f15b9c1bbf5bd56008226a8fdd8a. 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/43513084-273b-4d65-ae33-35ba536e45c8.json and https://artists.proofprofile.net/proofs/artist/43513084-273b-4d65-ae33-35ba536e45c8.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 0xfe6bcca0eb2298ad18960dc5503f174acec5ace2baa912bea2e551abb19d9aab. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZS642393737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb00408303e5b3d4a08863dc3dd50c2696ed232dbb8aca88f1e9d08162658fbd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZS642365855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9194eaf582534de5a5577589a26d704c998af797c4dbc8dd71560ed5b244fd6f. 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/QZS652386376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda15679823b214fe0a2bcda2ce7162b23e042d2f827c4c99e3f996b383dfe170. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHL2358378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e37d998f835b16031bd232884a97075bd99e4a923dde0fd3c2f1d01402769b. 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/QZMHP2339887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094de4b728a3ac295527c1e67d49194c1226345e097917310ecf2fa4f2cfdf2d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM42K2378021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0842a9b7b738394d5c9c88ff1d37a26913288b36e23673a66eddd8eac01b9ef8. 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/QZS632320004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0909a54f12a27c41b96d05e36e8cabb1a39678273ea9ea04dd38a3b2df511206. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHP2303254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd14f549af943f8e4618c88e2c9eb809670f2bf21179a38328745093db1ba93. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:58:08Z), 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/QM42K2362689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5083454fd258c5f259988169466c262f634df472a42c14bc4bffc3de71852437. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:23Z), 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/QM42K2390156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61fadc7c529de5144a5d726d24f13573204664c4e374060cf8dc4e9fa6248a3. 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/QZMHN2360134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb02cef1075dffb0a4a189424d6712eef0c134152e8eff5b4882f4171ee81fd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:37Z), 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/QM42K2320635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f97d72dc528725b7cf9551d22f8c53d9bf4f702054c1ff8a9e9ebd3d3a5c280. 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/QZS632330513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4be2359d95c4c8c4fa9cfb74a4190338153060e764a7d3a44b8536ef970d9b1. 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/QZS632385775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116211ca2600613e351712b8359d8475d690b5aa99ad276fc715f51c615b60f. 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/QZMHN2336399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab0dad8a9e660eca405d960082f69b7c906eef80b9063f378b10db3cd29428. 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/QZMHN2367035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd61720b838ac88b2350194751f0b682806cbdd4c3ffc976e1a15f83a4574b3b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:52Z), 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/QZMHK2317704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30968601eb74f0474f73e0d24db7fa4e5bbe6e3040a04b9f57947e4e14dd6401. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:33:59Z), 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/QZMHN2307889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe514dcc87b0ccef019ee354548a02db9a49258a32319b6287c9436561676e3c8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZS642317306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37778e86f4641aa152e8190db1e41fbce6d645aefe79503a095c946d1328b355. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:43Z), 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/QM42K2358994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3057d8930ec2eb8a39117b08faca5c2816e605a4624c6d523624070a9fdc32. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHM2356712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd104ac64ed8ed32b96f2f86e107651ba41bfbe6b08a9e11c7bf8c29aeb9c736. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMHP2366195.