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 0xa6d2a2b13184b6f4c972a6cf5fc7897dd5827a6fa414188670e16ac9551be80a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d6d97e1-46a6-445f-9789-8466613d8d37.json and https://artists.proofprofile.net/proofs/artist/5d6d97e1-46a6-445f-9789-8466613d8d37.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 0xb6c234e33485e2cb557c5110fb147a3c25921f6edcf2ca002c21038437dd6c5a. 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/FR0U91202921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3750e64b684754663e9a852447308bd5c00de06c42aa19b563ef8eb8aeda3842. 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/FR0U91202922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdb7091dc6c4598260f7cbcfbd656273281c793419454d0a5b8f88f89d92525. 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/FR0U91202923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60c85695c5889279cc02aa317b00779a228c1ef7b2cadabb0696da1fd3376a. 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/FR0U91202925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ec7979cc0514dea513592ff3bdb6ee144f07cca05cdf1d3d4d02b6332cd80. 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/FR0U91202926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987b2917641f700aa249740ba1ed1e3abbfbd0e005086b318d84433a11a532d. 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/FR0U91202927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da0fe758d98854c3d817c79b88faaf690e18a7323998de0902704220fb76278. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FR0U91202928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40edefff9e88fdeb03c0fd2928bb5a489b36bdbafbcf0bfc62f06f61a9141276. 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/FR0U91202929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddf7b51b6ff3ed2b011cbb317af3257a5a7f8250d44f4decebb9537c5776eea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR0U91202930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7908ac032676684490791cb679d58b53a5d9b9da8e863d7f457a871a7e1d1671. 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/FR0U91202931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f734d3d2ebb8f29d9eb6b528032009ed08627c74e7ee1e5e2ca10ed7276d7a. 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/FR0U91202933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c3aa21caee719e84c75e9e816fcdc0219dfe49c7ca102b5f6cec0a0b52c90. 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/FR0U91202934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e97032a920103189e7b492de079cfb6e966964afc56d8e2c6a6abd0aa33f2fe. 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/FR0U91202936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec9c117a35d4aa2d1dcf644a90d527b14044e67a2fad14e2d9cac7c63c5e34. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR0U91202940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39acbb4b79dba6aacc9b8f6fc76449e891117141b468fd4de1cf87e1995e32. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR0U91202946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7fb145eaf772d7d35a97835150aa0611cf2dec6e8a2f3b4d08e1805eb07fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0U91202948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbfbe2441f1a095808221ee187ca9716e75369c37c6e281e07b56dfbe8e6bbe. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FR0U91202949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2070c0130467456963c8d18a116e3916bc3ed4097f51e2496eab8cbc5dc5298. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR0U91202950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c57f7be1f9ee71553164e5b1b8912cc05830bcc58192cfea968b96ffe30ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR0U91202951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc82f7ad539b178bba5e8cfa41fd61d9a6d9cedd9436b6ffe81f8aaf358319. 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/FR0U91202955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897c24d9b55ea07f160213e751d0483de45ae97f7eaa01870f95a1d19da76bd1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0U91202956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03e26cfbe208a81de98158e82081d796baf9a4aa98bd77addba8709813feb9b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0U91202960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e68dd1ccb9a880cfb6bf76919e699d79b5cc849effa19e2f01a85c233c2568f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0U91202962.