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 0x0eb0c2db0d3daf4b63fd82ddf01f054e7c0bc32c1845c142afe688800b474c68. 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/28ae2099-b21a-459f-8487-3e4b24ef12fb.json and https://artists.proofprofile.net/proofs/artist/28ae2099-b21a-459f-8487-3e4b24ef12fb.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 0xcb63f01b903553967ecd2d7105605d2f709fe5773e4ed32c01075e681b28a211. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWS2299858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad98f4b424e5a7fde8d024d5d61911baa58c8136fde77282642bb1ed96f44543. 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/QZDA82302965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95ab332931f2e6494aa5e3eb0b733e0ff3278c2add9be321b3d76c3396ab39a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA82302967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da6d1ab6b0f9da5c0de4a636a01c56eca9691b3b15ecead3fe6e06e47ee1245. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA82302971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f55a238ad2d4233b69306beddb54e4046f48693962285d2cd1b15b12935237. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA82302974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf12586f7d097b4c7f670d0ca2a81c48d668542df8d3565d9c101e86552a362d. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/AUMEV2349605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957b64193a25fdda032e2ed8920d99d5095d0a5afa7ce4d966d7736f1ea2b73d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUMEV2349609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3040a8829809b96a61e5cba8e8c8199995a5df22603255ef934a0d6af028bc. 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/AUMEV2396376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ce58f36aca6b4a2045f9cae3ab374bb36f7083cca1faa9eea48fd87249ed72. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA52458953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e42b2a9e3ba0ba2e9e3b3e27e0289a564689149ebd967c83bbd96e55831fc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDA52458954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4a3ed81d4c9a59aaba75c62428bc27817e712ea9928394d40611a3546b64a4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA52458955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef31fc6795e10eaee26399111517fda3441dea58f0d48695a4c6102e712da16. 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/QZDA52458956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8204d96fe147c09b10af9c7f653ee743857d7536088567c4c5a8c4135a36b7. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZDA52458958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078950ffa6c432172bdd7f0b2209f7ab6b32feb525fd4738518a763599c4a5ad. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:07:17Z), 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/QZTBB2491007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6c87b1fad216c6757fad21f10f56f8789b0cbf4cacc8e1f4f50a0f71fa713. 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/QZDA72500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec89d54c2faedcdf156112d7ab32b6f53198c2d520dd84909cca23d31e9e1c7c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA72500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dd84623645659a06ea94c1ee35dcfd8953fd1c9dfe3468737454060cbfa4fc. 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/QZDA72500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae451b0f194e1cfbbe3a8830e9f17b5ba049272b3a846f303dad97925377dccb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDA72500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fe0a10233bc12a8ccf9e5d79b23117895a170483422a4a54cb50aac4103892. 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/QZDA72500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704601914d8517ec0a5a8116b880846c788b9f675d7f6b86262bbfa479ddad9c. 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/QZDA72500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a9a66d993821c8aab27279d0c7354a7c5924a21d1c56263c05dc970297bc01. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT3EY2565638.