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 0x3bed52f1bdcbceb08b110472f22a85872a80e12ea5ccdcf34f0eacb1f1f3e953. 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/8008de55-0337-4c70-bec8-94ce5ddcb79e.json and https://artists.proofprofile.net/proofs/artist/8008de55-0337-4c70-bec8-94ce5ddcb79e.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 0x86cb9f2144c951b6e7feecdd71889d0e3be3452028b4d9a73e1de70aa8626958. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:50Z), 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/QZMEQ2323400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fdb4ac696f230f6637cbd885b4c8e9ebfa6cef0830d3c423ecc788edd1273a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMEQ2323402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bda9686629fbcf4dca8020179bf2eec489166fece1dc10a02ea4e8e00c43dc. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEQ2323403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32313c85ca14bfd2b6c7f4720efb1e78d030260e0b54367618629f4337ad0c9c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:16:40Z), 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/QZMEQ2323405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0b29b802e9dedc6c764fa4ad9ecacabb933053c608558917a96f2f31336d6. 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/QZMEQ2323406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979ac216442ca147ccfddf15b939b5569206d9297e141c9373412de6ba35312f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:04:11Z), 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/QZMEQ2321828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f77c493b85ce900771ce5a4c49f353f2b276081ef4ccfba94f1a2b85640ed. 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/QZMEQ2321829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3148bc1c1076ef71245317eed353734c69f1c5b4454d59e935080c8ba5452892. 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/QZMEQ2321832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523f05933f45e5928a4e9197371e9d41498b3cf37148e4a7faa8dc3aefbdc07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEQ2324167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afbf991ca70657ac612b01764c958000dd1299a5bbfcde198b80d1f2c85233a. 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/QZMEQ2325661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73adee24c8864055ba675d76b2fbc63f9ee0eb7374d425b2381e9bcaca470cf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEQ2325662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef96bd54370fdfd435baf5bf7a3a931a9a46fd7d870a989b04915160a96b88. 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/QZMEQ2325663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d2f9aa8f4bfcddb28aaf595cbad8711b175f0a831d6071cdde769b4355137. 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/QZMEQ2325664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c7699ddad5bc73c922a956736f8c748499aa3c46f3223ddd072b60b78551d0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZMEQ2324166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1959eaeaa89c199d6a7073726eef96c83d1814e810595db65a5553129e3654. 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/QZNWT2391583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b24295fa0466836c92171eecd636181e1d39b34d78ec49bdc379891557bf2c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNWZ2399335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa958776cbac2f19d1e602ee6518676a4179747b197766878315b8712d4c7a45f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:01Z), 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/QZNWZ2397200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef73aae2be1e5a5f253f001e32566d400785e021f77c748b14067a92363c5d7a. 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/QZWFE2356335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f88f24552588856044b12626f7c91a7bf789df9229c47605776e35b76f889. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZWFE2353026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03767afaebec7464d2b5cff6747ea444e39d48f843c643bcb65454d11303ad. 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/QZWFE2356332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7b01ea50fda5f28dea104ed644e577b5c3434918621c7d1d09304b42ea7568. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:44:15Z), 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/QZWFQ2327004.