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 0x8283392b1b055a98ddf918a42e74b9773899542e3b3ea9315ed48472ca4db3f0. 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/08fc1fc5-6fa3-4e1c-ba3d-9f7ea30af3d4.json and https://artists.proofprofile.net/proofs/artist/08fc1fc5-6fa3-4e1c-ba3d-9f7ea30af3d4.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 0x110339f491c1c5fdff434193eb64342c9d17868f9a2a32cb3ebaf24c713daca4. 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/TCAEE1961607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beddd054a0c21d4efcf1d1bae39a94b1666a75076d9780d39daecf36763bb18. 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/TCAEE1961612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39beb1912d46997595b14fe25d99115eeb237e42c074c2cdb36b90724ea5f013. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAEE1961615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a1e6c0bb05da7bcfc378f536649837bff50a7beb484b320b1b53948b7bb27a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWT2169630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7568d0a66a965121af021db21ad6c0a8be886856e077f4306e2422d430a0a21b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:01Z), 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/QZTAT2218043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03008734dc828446225c453656fae86ddb7711924f7a47e0f85524eca6ff79da. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:36Z), 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/QZTAT2218044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd9ccd9d86af1b4530ddfd1afa92cb2120176c1e5bf0dd3c41bbe3d4d8854a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:30Z), 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/QZTAT2218045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070511abd81bd43a7400867433fb7c053fe570ae18a58f6d11cef0ea085b98d4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:12:11Z), 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/QZTAT2218047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed786608c370b60f7f6709d6d623f475c10be6245ceecac468a857994ae48fc3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:48Z), 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/QZTAT2218048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4c2a654b4f0dca8e33a591c6ec46f7621ce5c7f56779e059f8480372c5ec0d. 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/QZTAT2218049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb69ea0390d2f28e4c775163d9762de89b82a619948ae5cf026b74d40e60a56. 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/QZTAT2218050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadf8c2372ef6ab1388c4a2d17ed5f9b42db930a813d86ff58890f3b21540140. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:53:04Z), 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/QZTAT2218053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969200acf5292eec96195fa807104debd2821edc3c264cab90bef59ffa91c80e. 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/QZTAT2218054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ccdff586b7f976ec13892a078c8fa3ecfcab808a555dfa1f77fbac51b2846. 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/QZK6L2360193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f524e6d9b656c9d16446100ba00be85e71fb287df6d171baa0616b525ae43. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZHN72441832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f35d3f78b01162b000fb6411b9de738765928837f9272a5d28fe21695ffa9c7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWX2450286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e70a7bca3cf4968aa77b63fc2400cc110462b905c6b4608f3035adda4feeaf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWX2450287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652e25cb87470eea6047bfba2bfaca919dd8c12e927053608e5760a098c3ff06. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZK6M2495397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec359683824e52147a827ec8335feb892cfbfba1841bad7fddc2bf4a7e8efa9. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNWX2450288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb185b6d9d6758dd37e64aa90f16efe69ed568041f2894c1f5747982ac3f20c. 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/QZNWX2450289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf082e992d3219e351f19bdd7bd6dab21457a5bfc1a19bcd3eb87fe4f616b69f3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEQ2441228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f524e6d9b656c9d16446100ba00be85e71fb287df6d171baa0616b525ae43. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN72441832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a7a12552f36a369871569ef27602fc29d89e1f334b195a59f4d29c60a88b3. 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/QZNWX2450290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d4c8949f19b0e40e33ecbccfc2c5138f983f292497ad4927d16da1849d073. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:16Z), 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/QZNWX2450291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d86ae8af63e39b8010f80a21d182c343a59f22a9e1b549a55992c1560768d69. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWX2450293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f658237bdba8842161fa0a8ad25dd8d691bcbf27d7cc742f7738fad2542d9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNWX2450294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a523be53f534d27765e61aea71b850cc680f676740b02843b5eee89184503. 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/QZNWX2450295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45d2457f60e8bee7467a5d9412684fc85832a4a5414148113a981cedcf47be. 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/QZNWT2345964.