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 0xcfced98137de5cb4c9515991cea009f1a1160ce3afe4a99d57a6e43e1090f26d. 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/bfb93fbf-7f12-486a-b86e-e721ab4b3ce1.json and https://artists.proofprofile.net/proofs/artist/bfb93fbf-7f12-486a-b86e-e721ab4b3ce1.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 0xff046d435d0cb8a2ba58689a97c42255d552c859dc08b2fa195d79e67505ced6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:40:04Z), 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/QZTAT2231903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b174a7f7dc28536aa9c17a8c95e692bb4833eb2facfb82d44fdbd896c4d77. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZFZ72286019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7000b7de53e0a0d922cd69f4f431bb37a62404a44c977caec93b2f9b078016e. 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/QZHN72274433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fff089309d7d0c7de0074fecae6bec29c19c41137761a6c1d6d938bd021dc6. 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/QZTAT2231904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbcff5cbcd3647f98e82152480ba622932a69388bc3bf49da7d693b7a98b81. 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/QZTAT2231905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80372bc330e3689967af5951015c110522f2942f2799edcdccb8690194fff41. 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/CHAAA2409247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182b87a5c06e2bb43e63de6c39637bda43a2182802a8eedb483bebb88609ec01. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZTAT2231906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094e5b503619c30cf0e2478c7d0a95c99fbf633124af58fd2584cf1504e470cb. 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/QZNWW2250578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb67e8d5f933c027d951f8710d6c05a7df19d4c55bf859333aee7c3144587f0. 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/QZTAT2231908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e0d5d86660701478077f047e3dd63a5ac13bda9a00d8f1d77a2268fc60cc8. 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/QZTAT2231907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990114252735c53c1ece207d573de0bd45a7379a7528034749553ebb35f5ae2. 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/ITO7X2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9bb5b610db504229c036818919c7dc0c2e15d2da2055a437b3f05d4d24218c. 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/ITO7X2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f745160b2a6f60bde42c35232721ab2dc29164ebdbfe96d0920a2d08a1d7b. 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/ITO7X2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ad3aa5318a5dc5a9b491cbf386c069d0bf3906b7f8749be81417f05ef4c41f. 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/QZK6G2341266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37a60cd53e22e0dd5eb5aa0d75c1e8f5a117d5d6a89ce98214a8d72afcdf0ea. 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/ITO7X2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544fbeb1abef5791ef1a3d972a365c0996c7deb5bd146519ec01f3b39d673a13. 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/ITO7X2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b3ea3ab6bc4e63d55d1d991308e0fe17eb40907bd353b9f63bf6d9d66b03be. 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/ITO7X2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364ef2fe94b38da983e76a87ae0d7e6e99a43513daddb9ef85856e82ec5b5620. 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/ITO7X2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9003a9b55425b7fe4eff76fbbeb8d82f536027f714ebb3e638eb92796c478279. 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/ITO7X2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b84dae84b38e8f2aa5fcccd7d93a3b97265b2f57e9ae99082dfe02bc67b3c3. 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/ITO7X2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e966998eca57fd197512b6718ef34932b043dae1773c65ba93fab7bcfc4d360. 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/ITO7X2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a9ad96c283d672bdd7acc90b292f95152945a533e382d6bc5d1db16b041e31. 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/ITO7X2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff046d435d0cb8a2ba58689a97c42255d552c859dc08b2fa195d79e67505ced6. 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/QZTAT2231903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b174a7f7dc28536aa9c17a8c95e692bb4833eb2facfb82d44fdbd896c4d77. 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/QZFZ72286019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7000b7de53e0a0d922cd69f4f431bb37a62404a44c977caec93b2f9b078016e. 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/QZHN72274433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fff089309d7d0c7de0074fecae6bec29c19c41137761a6c1d6d938bd021dc6. 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/QZTAT2231904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fbcff5cbcd3647f98e82152480ba622932a69388bc3bf49da7d693b7a98b81. 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/QZTAT2231905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182b87a5c06e2bb43e63de6c39637bda43a2182802a8eedb483bebb88609ec01. 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/QZTAT2231906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094e5b503619c30cf0e2478c7d0a95c99fbf633124af58fd2584cf1504e470cb. 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/QZNWW2250578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb67e8d5f933c027d951f8710d6c05a7df19d4c55bf859333aee7c3144587f0. 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/QZTAT2231908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e0d5d86660701478077f047e3dd63a5ac13bda9a00d8f1d77a2268fc60cc8. 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/QZTAT2231907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364ef2fe94b38da983e76a87ae0d7e6e99a43513daddb9ef85856e82ec5b5620. 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/ITO7X2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80372bc330e3689967af5951015c110522f2942f2799edcdccb8690194fff41. 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/CHAAA2409247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61789896a482e193662e89d060e80a253a22b60dae23d049ca282098994925bd. 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/DGA062314958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7000b7de53e0a0d922cd69f4f431bb37a62404a44c977caec93b2f9b078016e. 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/QZHN72274433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b174a7f7dc28536aa9c17a8c95e692bb4833eb2facfb82d44fdbd896c4d77. 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/QZFZ72286019.