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 0xa8ffec8cfb6a173953a51ce1f198e8c944034386c6d39ccd67bfd30666b05a7a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c7f5e5c-bbb0-4325-93d2-7e012d0ab015.json and https://artists.proofprofile.net/proofs/artist/5c7f5e5c-bbb0-4325-93d2-7e012d0ab015.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 0x70cac8ba0be2441b375949f89ca225d5ba7d5f6a2ce8fe247ee86be5421122bb. 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/DEY472378225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfc857de91c05ba734439e191d3cb126bee32e292776223874ec87400676ce. 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/DEY472378226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1629fb97c661e73d1ae5973cff7bf17ae1a418c1f4fd6773a8fe2995c3c382c3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEY472378227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ec005031e02b1babc5fe51a3257f3cd69e2989e52c0c1ed457aedc5e901404. 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/DEY472378228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14643c18821c1e5b4eb60e4b1bc2f7fddd03a9f7585d7369389008ee9ed6e20f. 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/DEY472378230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31805cc878efb2ffbc6b1ef1653139733f918f7ef478a60c90afcbc88b799368. 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/DEY472378232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4b9f86ee9b073535323615151e84c72f33270bb1ad3b8c1dfd196cb02d5f9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472378233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65bbc21ad516dd4c52f7943e0f582cf01a1c34c36a20feafc5c1e83d3cd69fe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY472378234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0036f1239149219119024f04efb58fe516149e3360410ab117bedfa6cbf530. 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/DEY472378235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c97211c8f29a2d4be5be2391fbc22d4685a73c6442c8cfa726b975193d4828c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472378237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc000b04e9c8b62a876a7cfbbfc8b0533e734fef1205a3a8cf461621db88f14. 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/DEY472378238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ba17cc43c347877f438bf29863447ee150ae8f6a55dd81c31bc79cb1def9e. 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/DEY472378239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572b49cddba7bffbf82d578b23148cb6dd6bd5ececbeae3be836c4b61e3d74a2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2098415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e4749a7bd2c700a77ad2d84b9867a7dd91ab0a950db50855bf8df7d3186c1a. 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/GBK6Y2525001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec0d24ac2402b5bf6607adb9f8e0a0ae40a10759ba5c6727fdd75d8e9271339. 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/GBK6Y2525002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e742c44c04ad3b79e247f95d4a3d4ba6277ac284a4d27047d5ea7b7389b384. 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/GBK6Y2525003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524140c32a6153b6fd25a29567c20bc093f940bd8c9fad4ef1a6461cdc658238. 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/GBK6Y2525004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fefe79216fe4d3ac7ebd302740fdd2752c602188ac7f34bd05d2c182a679df8. 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/GBKQU2415954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f8b8c76e057f0e3499a1b2b8c8346be4c0a76471229102d62e7b04e6a7bbd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2415955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ff8c115b468dc0105a898cb1409a1c60c7c0a7b5fb54fe8fb8d3b5460248d5. 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/GBKQU2415956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbe06a616707c2ba48d109882e4620555266e28277a36a975d4e8155a86173d. 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/GBKQU2323167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53a613794f7926c97fbfc38b6a9c6c98b3e786f50f851e348309a5dbb4edcfd. 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/GBKQU2323168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907536299b46ffe5db996ba1ce0fb7e3e4a8e946c707c05d5f93617bd683e14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEY472272167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883ff1f3251dc66e37864f7c877aac668754a8909e430b819df5a226c5b4dc94. 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/DEY472272168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568587a1ba0b502e5e74527d1aee25578d4d5bbbf450a8591c223141d0499dc5. 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/DEY472272169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf271ccaa8c516ada320ff5a5f3d9e7f2d9ace46374660ea07fd2929d44caafcd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY472272170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf271ccaa8c516ada320ff5a5f3d9e7f2d9ace46374660ea07fd2929d44caafcd. 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/DEY472272170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec2108cc8eb1351213cece1dee2b11d0d9ca16fd5f16b0454a312811b3bdb2e. 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/CA5KR2213379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ce01f9bbf402309f3264f8be912248462e599b2daf40a6864a54ac9b81543. 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/CA5KR2213380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae3b09eb07d2811ea7aae4f0a34418237d9ceed5c8f49224367283c7423ce8e. 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/CA5KR2213381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d8e239540fc2bda21361f2805f2605c4ea3d0f2bcc6f4fe16bf9746e9ac16. 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/GBJX31960045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee07caccdfdf0bdd35e61ffbf105e1c9d7e22d8fee177f533caedceb1496c0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJX31960047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d4c7a58a5158e595d421b8588e20dcb06ae002cedbf6b2fc87fa457bbfd825. 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/GBKQU2177284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516d8a8ab4a778bc99d0487cef6417c71101ce2f8254c665c8f00f00f96a7d4. 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/GBKQU2177286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357f8ab45c513ce61b286e674de1b9cdddb43d37ceecb3a3cf0b376019f4a421. 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/GBKQU2177288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68ff7c93534835a3666faffbf97efc563d73b93d36f1479aae6b78522bb9a39. 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/GBKQU2177291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04fb4e82ff5476a829e982b35c680dee5d23ca6ca5b7106111af811622d5a7b. 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/GBKQU2086670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa771ebac307080bb2c969a22bfe75b02a652deae2687b77d997bde230392b2be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2086673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190c3ea07a153f0b007683cf3862f29fff3327445f10a667ab16741a8c5611a9. 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/GBKQU2086676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89879c3da780e112fc747db6cb16e0b7ce9adb49cb948272fd435bc35588eff. 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/GBKQU2086677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24941d4ff1e0476c1e817985b48e87f9ad8f967f12d52fcd57da601d9bd77fb4. 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/GBKQU2151528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbfc27eddcce532deabf3e2f2fc66240178cd70e00cebb22d90ff131a549e3e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2115726.