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 0xeba251742715659386a3807df8ca522b3d91f6f99aad209d528eaf2c580c0044. 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/dc2aa968-4b11-4dc3-9487-00faef171ba6.json and https://artists.proofprofile.net/proofs/artist/dc2aa968-4b11-4dc3-9487-00faef171ba6.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 0xe780913c1b8cf92ee156967ae1ac42e93f38d9842a63f8a65481bc182d035028. 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/CAQ8S1622906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bbecb3ebca4e090420e087244258cc5dea7b15217992a2bda64aead53df525. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CAQ8S1623706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ce05e0f8dfc28867c2cab99b77900186b18c207877041ba83f2302d0c9b185. 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/CAQ8S1624159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f549d1c8543c5c0f330adcd196d5f73196aafdd0ee8e4f3757b53a532d5d01. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CAQ8S1624402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5840321983201e2b7715522589144196f67b51d8f7864a6a9daec8f01236162d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:37:40Z), 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/CAQ8S1624824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f693a5b35d5edd28c35f2e34c5e564a9ebcb24d9ecfdd0c8467be7d1a744c65. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/CAQ8S1625054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e573de62bd2a7dfe0872e96761fe300d5ba47b2babb9cc260c4423acc0c4f1. 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/CAQ8S1625253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5198d9174d7e90a191f44e9dbc9cc0419356f9b91e30fed2941cc58b5f7d1234. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAQ8S1625507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ec3a90f81c0c282416baa7ad1361fc71d05d114cc897db562ed91837d7ad26. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:46Z), 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/CAQ8S1625530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bf6bcb08cc91bef3f7a5ab1525f22e5b02752a28a8e70e7b25a75e3e7d2cc2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/CAQ8S1626333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3260f8201262460dc0294661abc905337b11f2ec2407140684db9c99466472. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:15:20Z), 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/CAQ8S1626376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a0f151f31f57447187a0b8e9f411afc0623e73af60bcfe02b1bb8e804f1061. 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/CAQ8S1626407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf2ea2c098f2d08b2b5886503282edd22fe78818afbd0389d458143b203f4ee. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CAQ8S1627729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba32c28672f0902c51885704185c9ea6e48601fbfb22d0688539312e146e0eaa. 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/CAQ8S1628326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf49840e800740ebb4f5fcdd4e21a3daf3c88e7b814663899d188b7a258f9e1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CAQ8S1629278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2740f857dac491cf49b51c68674330d19fc60fb3d39dc7535ab11c9df9d705. 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/CAQ8S1629279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26ce4663b7ab151407e8746434fb2e5c3dccb8c946b03657620956afbcc46d3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:42Z), 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/CAQ8S1630348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393263d68a95128e9466eeb54a770ef51d318b4aee0b65e19aaa0b70d27f085f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/CAQ8S1630349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b82c67116ed8aa2a8f419906a53ccd6c36a8a3959e9cd5489ed40b2a5d409c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CAQ8S1631783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f1c92be0fc845c3b30df1fcedbee75d080b226a39337d589bed11d26c66e3c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CAQ8S1632509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02bddbfe469f919dbc3c589a13430da2ae1daa9b757f12adaef5701fcbd944. 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/CAQ8S1632905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c9ea14dfdb11819b46ae04137028291fb4c629d81f05b4eefcbdc7cab1bfa. 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/CAQ8S1639747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578aaf54837c11ea2a445957fbf383ce828c7904363bc3a95546083799e42524. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:21:55Z), 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/CAQ8S1639763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37605130f26fffeb2bc23f74a4f6e0b0b84771f5bc1da57442a8aed30c05acdd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CAQ8S1644771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1be7414d96f6ab8e510c643bda164ab91c9f5dcc4dfe798dcaf4d813b85ce2. 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/CAQ8S1644988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f41cf79c2da732f816eb7a105b7cd9df55429a9e42c6c7252abe34260b1dce0. 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/CAQ8S1645967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df24b956ae6c7380fdfbb267e9c2d97d9acbd2ca85abb5e659affcc21dd238. 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/CAQ8S1646542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93116435a7336a2ff6f7341b122f50de8031069cf24f706452b33d99627a9684. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CAQ8S1646593.