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 0xf89f2a182d601d8a9c92385d1d909d10d165e836794acbf95a37ce7aaee24216. 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/fcea5bb9-fdb9-4fb6-9bcf-fa5148d91983.json and https://artists.proofprofile.net/proofs/artist/fcea5bb9-fdb9-4fb6-9bcf-fa5148d91983.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 0x182738807223cebca21fcf165fdffcb59e8f0d76e4dee8219cfb5468d1982552. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:29Z), 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/QZK6K2269681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191417c17ca7c245a223ae663483bca30b077b5f8ec62c56fb714b5841e000a0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:14:42Z), 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/QZK6G2288467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb445e60b51449914949300e05219801ab76d8453ec9bc4e3196d7cb18ae7d402. 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/QZPLR2207416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe339c86b68cea8e4ed7fe32631efd8876f16bd6e33d0f83cd88fd49fe59a0826. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZRP42282997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2fe1d93abb20f5882265ab4e4a07f1ab1bce7b66c71940063a844dcae60aba. 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/QZRP52296957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d8a173972dbac43072b67f54d16e81f891e4970a36082e29b98de8bcd1e131. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTB72247216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3621973ee84ac92e87431d769cdd8f7e5e9232c8d4d067a5934ad4fd2bd1a1c. 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/QZFYZ2322835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ebdfd2a2d2c617b527f534e75b777c12d1e116c0b3ce43b6ed620a57fc9edf. 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/QZDA42366020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c9a8c9a856c3159353afd9e5a88b8c612acfa390b22353a42dd26da767ba8e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:54:49Z), 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/QZHN92341528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6374223a280adf55f38786c46ba41918f8266ef61cb9ab7cd4a9e6bb7bb943d. 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/QZK6Q2370004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd37269e861da5014979172337e234061d9bb55ed17e3f2bc690dc4b5f57607. 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/QZK6G2343212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eacfd39a08021b2651edab0c0e710d5ba38778ed2067ae5db1cc3321e8a527f. 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/QZPLR2324372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c93cf06c2eee4f7afb020262840871c3c00a6f49d0ca2db486f7c0a836a0af5. 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/QZWFE2339810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113eb72fece7d6a934faaeff8246ee176dd6215f5f20d9c30df6f7bae769309e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFJ2393707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0b64857c095007b6ed64ee1a744dd0199692e3101c6e23c4d8ae6613a66761. 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/QZHN82421187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7ebe98910533c7b2dcea0d57aeaa061cd631df88108381ba4d63b69332960. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6Q2481934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c544afc5a427ca3bd4355535a3e922f86084a276ef4982153f7633bc8ba3f73. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:27Z), 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/QZK6K2445819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0bdedc3eb68b5d941263d8071640a1a4c55d6ec9e80a320beec63d3e021571. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZK6K2446175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c32d99dc32aed93e28bce952ea49c26cc67d6b78c79a3f5d62fd51db403b36. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNWY2464333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b90215927772733391b6c53ef754299a29e3de80700daeb0031cc43273a1a7. 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/QZRP52408033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc33004ceef62eba1a8b992316275bc02046ba08e36a914278018e44f712cb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZWFT2490540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0413dd85e6bdcc268189f7d29f7ec4b5283bc85b621b59baf4a80ab6cc4ff75. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:37Z), 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/QZZ7P2444114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb3d03bc91198a62afeac1faf4d002bcf6364d33bbf06973d4ca588b5a6893f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6L2597882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20451cc45793f47fe5c163617bff0866b8420a5f1166e7cf5ae0f19c4f1cfad7. 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/QZTB32530417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998706d10a4673b3156226901ea4cde70d9459e07f05572b94bfd4836d4fc94d. 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/QZPEW2493945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34028bbcaf3974feaf932b84352f20d385e477dd8e369322f02f8ae281998478. 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/QZDA82424084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fe6929918283e9645624dda7b59ce30968eb0c4e02987f71dd90fd1db24aea. 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/QZDA42423306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00fedbb393d488b2691f3e8377857df5da15f73b919feeaa5c6ac411b5a5814. 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/QZTB82340856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be81bcbb6e8f592cae612c474a4f47ca3e66c8305c777025b27ec3f56ecea1e. 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/QZNWW2320178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c117d357eb4e684ca13dc4d4d548f66c5ababb3283b910be7eb2661931608. 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/QZES82370064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a419d59e8da6c5f11d3dd85c46600ff4858b8579a1779f3a48cd04a790399f. 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/TLVEM2466962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267bd5a30da728b8c0c0182bc634232e28c40f1002ab04c22ffde723e601c35f. 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/TLVEM2462368.