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 0x7a7f0b046eeb2ae09a4f1005e1d8463ddb776e3144f0ba79c0c561ffd391764c. 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/91a85ebf-297c-413c-b017-fa1f7894db29.json and https://artists.proofprofile.net/proofs/artist/91a85ebf-297c-413c-b017-fa1f7894db29.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 0x86b6aa6f22a2cb749b286ea215ef17faf43918fc411149f500723458d5db16b5. 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/TCAFJ2149689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a070931a784172ae08ef8d9c7822913470828fa47361a570d4da5584a36fd0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFK2130678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14ed79d1eb8919daf1bc5f505b7d57fae53867204703b028591869670d9f13. 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/TCAFN2113570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f0b02052db105aa7666205b088c6cded9debbed0a89433c69ce1b8867b9734. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA42218223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845cd207d6066c506a57054c6f8d4aef2542c6d63835be659d65d8416332f290. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZES82211933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c2cf849c23a3d72287772087c3d88463975ca8f49d29ff4cde460b1e5b01fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEP2263410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0763c1301d014e39da2d1f05e4a83f7447786cadd7c35f87b2d7eea08d90699e. 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/QZNWY2242895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac4f08bea723423186d632201d25a55ef8f6bf9467bfb56eea39c12005c381. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB52246935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272a4b126a2eb683c5e2b4625ffb0a825273e543147f59b175438e358651f965. 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/QZDA52349306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd4823280afcd4fe70296f382fcaecd1493f330e87e625ea184c2f1f5e894d2. 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/QZES82356866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f8a9aa5da4db4fe85ec6262fbd152d6484dedc95fa0bddd540158c2fe84af3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR1A92404883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bff23289c94228c3d4ef7a9b06fde803113ac002a53caaaa7181e827a5f7442. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR9W12413035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3821e25cec66b2f3b4476cfd16cc2da8a9f0d9e47d27778b0261b173f169b3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FR9W12457010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5a07ba97e2b2e536c4dd9f0ddf4c7ed61d6b3db19106666c317b5c390add0c. 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/FR9W12528881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeda784b2c2b500b98c0c3aea80931ee881bea4ffaf5fb869ef49841414aba29. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:21Z), 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/FR9W12457009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bff23289c94228c3d4ef7a9b06fde803113ac002a53caaaa7181e827a5f7442. 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/FR9W12413035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb45f6e9fcc4130b4ad34eff3fa1f7808f7baaf9458eb7285142ced69f17116. 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/FR9W12457441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3821e25cec66b2f3b4476cfd16cc2da8a9f0d9e47d27778b0261b173f169b3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR9W12457010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a17b925b257358ef704fb79b59ff6fc04dca4aae0155e2dd786dee5a7b1d297. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR9W12457011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57927393bd69f00e936ba40315ec275840aadff9fb9fcfedb7361f91cd7a0933. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W12457012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2232aaeda2c1766135c87b2d4a76b070bb974f6381b3bf615c92c3fdab1e26. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:33Z), 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/FR9W12457013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19684c6e9c30c6a2b202a5a6dc117faa779b1b218ccff5bddb3cfc07abb30a97. 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/FR9W12457014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaecd46253a97da567f06a64b44aa14b62110c312c9e1b34df1d4881da6baaa1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12508292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d05cb9012e8957a370ca072859397a593d1d3d943d89c1fdc25e0bb19aaba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W12515766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271989884a66081d29c9f3c17a5c200ffbebdcc96b6ddccc47ae1fedfd66793. 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/DGA072419068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df7aae60f26998071bf2b7789b64e45060f8b70f49c53cad0bd947454c019b. 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/FR9W12431041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271989884a66081d29c9f3c17a5c200ffbebdcc96b6ddccc47ae1fedfd66793. 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/DGA072419068.