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 0xd1932b80a1d2dadbb81ee17e8f93effceb93cd7a26116bb9e1cbbb1d65632445. 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/41c6eda8-c9ea-466d-be34-ba1eb904acc4.json and https://artists.proofprofile.net/proofs/artist/41c6eda8-c9ea-466d-be34-ba1eb904acc4.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 0xbe2a29fa8ae25c271e00466b0ef3e0b755700bdaad01ccf9194e97b38bdefaed. 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/DEQ121857704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7728854e8af51e24e9db4e518bd24399a56c654e7ba3199cfe86ac1e67ddf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEQ121857705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de527089c1ab6923d37cedde36d0250c70c6b88f1a202c34c36874317f2b084. 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/DEQ121857707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8a2ccb3d03afb1023cc81eee29641bb10cfcf1cbc19fa4c7b8ff8bdc1e49f9. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DEQ121857708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cbef73aa0d4d8f74e0daad37b12e0b943ffe32d47e4268831409965d8454b7. 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/DEQ121857709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e05c3beadb0aefe1252ae06b149bde5ac332b7a67e49c7b14e5f824a4c0dc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEQ121857710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f82f4a17fb1642a269fc1a8ec3ccefefba86c3d4dcbff770056896fa983f5b. 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/DEQ121857713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13062063ea2febb0fb05196df94c251cf80ab477b1ec623f426c119a06d233b. 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/DEQ121857714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1dda29d3f7771ab163f4f2f11427c508b26afdb104cdd775cb56e57d7e7765. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEQ121857718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14fd2e696b4fc5686a6ae10a2466a5c59e3c165bf6f0e7acdbdeaaa5a07e6fe. 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/DEQ121857366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63b138bee590a10a61da5fd5408ded3e67a326dc8731a78c50dc95a53bfbffb. 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/DEQ121857367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319ec02f644346ba10bfabaa46c9728425627a3842250025a67e5c59fcc9d852. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ121857368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef295f6dc03da1b09b4ef2a9e2f8b432db604b40fb2b8d9432bc8a4d4e1245b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ121857369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a161a2c7fbcd04c4ff03feacaa8e1787ae4a05984dfe7e82deb98e4afa539f6. 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/DEQ121857373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05a91ad180e2a8f1b5c9490730393df4ce74bbdde03625dd5c1a778f2b17d80. 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/DEQ121857376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62a472cdc5e9eadcf398e6e067520e3cf077212ebc2e308c86cb18444e9c30. 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/DEQ121857377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9634b836e3f81dc3a8f886ef20b3b15296dbf4ac99e2804868d98653b06c76d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEQ121857378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192b513d96ab76be86740e25cfaa8c92e42043c2319a2ec915be1cfd28d9429f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQ121857691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb72e7c5ee6baa450362496e61ec600f05ea5f538b760da0cf81c05e35873cc5. 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/DEQ121857692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee921b6c20aacba4acec9e5e9f3ef0e4f79ba785cfb657da8b8d7c40766b783f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ121857693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8392cb900528ea9fd7ee61afc00ae294d3eb97a46fa7f7c1f0d61c39301381. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ121857694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15385ea31bba33c9c019ea02365c21b636dfd4ba421db44022e95b3855b565cc. 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/DEQ121857695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f555c14727e9acbe263b3d2108a5efd4366fdc3bb7be2777048f93cf783f654. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ121857696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5987448a958dc0a0cfd54b077f4e9bbdd8be4c53f3ed898e344decb437766c. 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/DEQ121857697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec3fad56204799d0cd26b3315b54c82273712d742abc6950d31729d1d59a7d1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQ121857698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd59c3a47a683bdc0bcdb929c98adaa7b87a7464251dc95bba9c32026b8913e5. 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/DEQ121857699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2e692a211e65b77197ef8b10927084ba4c8e0570fddbe374e8a493b2385711. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ121857700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b08916b5cc11ab9652257d7ac2b0bad33130bcfb0f899ae4f13ec321aeb427. 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/DEQ121857701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454099b79be075f8261d449ecbf508af09753f064680949ed30264ad4d34c5a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ121857702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1038a83cf95c67f8966ce0a69580cbf96ef2b8083eb6540a434c1765179191d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ121857703.