1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf0f5eecb9617087de92023a4187733878c678fe0cbc913412c3ce3ade31645a7. 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/ac1e3d0d-7bd1-4d42-ae84-d965a368651f.json and https://artists.proofprofile.net/proofs/artist/ac1e3d0d-7bd1-4d42-ae84-d965a368651f.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 → block OTSBitcoinBlock must exist at that height 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 0xcbd7990b199249c27ca5a6a5350fd3db0efc3887eae70ab1399712866ccae541. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US94C0517203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbb126f36d0018e962bc2410b8af223156b4e66ff143fe300e0e585cdcb4e03. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:23:30Z), 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/US94C0517204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436155c07c1262bd4cb32a7caad783d679fd8e4fe9651631b4367467f2ab356. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US94C0517205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6563cb74a8a36b645b2b8360a80f8506e88105919cb632e687c4948e258714. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US94C0517206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3d3fa34201f7d13108a4da527cb71fb2f57585bc4e43593049d549f1565571. 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/QMFMG1329959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9f154e6b08d0133e6e7f5870a8cf5db07d6da0850123c94207cb8e723799d. 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/US94C0517210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c6d82845cf3f2246b0508d023f5a7e1379abcfadef931aa6e1a799b57571f0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:34:02Z), 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/US94C0517213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a48fa098da10775dfa601517ca474e84eb9fa7f05be7921b12fba66e521be6. 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/US94C0517215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dfdd10766cf8ca3a527789148252171d276c5cf5d30279e15553db9435fdae. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US94C0510509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0ba56b8b2f194348c92ccfe207208f48c644bc96ed4464506ffbf6fb08e44. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US94C0510510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed049ea484178ceb9d417d0cd7fbe037052296357ae55ab0f2e39c6d30afc741. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:06Z), 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/US94C0510511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d8545304c11e42e9dea8030dad93a57a38f53715fe7a1a577a0addb7d27ab0. 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/US94C0510513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9609910268d26123dd6f06f04306c9977545a8dd873f423b15629c4c71eb25. 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/US94C0510601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac759ff36a30efd7554ce26b13d60377362a1320d03fac6629438c116f8b7633. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/US94C0511002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d6413401a04988ff32da15ab1f9de3c25b80a58e199e5eee282167d302be0b. 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/US94C0511004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5143244a9705504dbd3586b49140c007953b997e15500198dbc6464674ab8. 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/US94C0511005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35e1051ca7db21257b5c726c81ea3d472353ec8ff778490f8824c2d0a3eebbf. 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/US94C0511006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b29a6665a58c23b52bbbb0a8458795fe3c7fa7594524f6b0c4bdc873f72a27. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US94C0511007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc900bf1110ba5d8244b30568d6e8a394b610c8d403156bf7c0f8c92434731fb5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:33Z), 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/US94C0511008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2991bdb0bc08a1755a2fcd3e49486f9a6b65ac60e847da3a6d1ca512a990d80. 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/US94C0511010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357c9ee1dc29b28ee488707c487d01209afac461064e1df47ed9db9a50395b1. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/US94C0520302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd8b424e9931ef5993aebb0b32bcf57df03dd0055280b0d51da40c4bd38d02e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:27:08Z), 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/US94C0520303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1f448301d8f55bfa68dcfae6c7469ed2318c8990cf35b824b73a2c0db60b03. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USFW41799003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f91b73032129b20c7e0d7f97571b6273f855417852121a98becbd9d9da9a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USFW41799007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2168137bccfe1362bbfbac5dc3d068721cd39f41ec0bba12e29e0e1d3ea84e1. 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/USFW41799008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25afd91443b6b89cceb26290b470de83057395b4d8e08d8e560a5c5a736a86d. 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/USFW41799010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71b4b66fe8f00140df1f370e572f6f305d8897873865bb9a8d8b1394fe5ac4b. 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/USFW41799011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011d80e6109b8e045f25094266163da4ae1bc6feb92b8ce1d9877f672c0c5cfe. 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/USFW41799012.
Can Anybody Hear Me? (A Tribute to Enemy You)