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 0x1de4ef36f9c87def7690d4ff1a01a33d6773fc9b9796af9b762a0db64a5e3c0a. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2541fd7e-7e2b-448d-a883-07469d479220.json and https://artists.proofprofile.net/proofs/artist/2541fd7e-7e2b-448d-a883-07469d479220.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 0x98876363535aab05639bcf2abe3349fa350dd5bce6c9f35b704fcda48fb9a54f. 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/ZB80H2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182727b42905a7793108b38943f037fd8b24de4b6a15cccc132dd250614bda1. 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/ZB80H2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514bbd1f81a9974cbb784034cd1a660a089a241f07d9302146be09ed673e993d. 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/ZB80H2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6f5fbf8ca8e2668a134259ff5857ccd49f3b45bbd89c1545e3cc5d2697d851. 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/ZB80H2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03facf6de065cb7451619cecb5c2845011c873923d376fe4a27a594842f72c7. 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/ZB80H2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed52fce53528a9d435b55d8004625f9167f93e57a9b8a89a541f2714bb4288. 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/ZB80H2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f74eca53c474b63e76f2747fdde7c3439619e3eb0a329904bb404535721c65. 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/ZB80H2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c54e9377d9dc2e0de84eddeda7bb5c7ec6fcafacc5153398b07edad57ca38. 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/ZB80H2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce17cfb6476e96964569bec5fd6e92b58e65a480490ab87530b0957a33dbb75. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZB80H2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bafc3cc4fc6547e4e5affea293d8b2bd94093c3f704795e0c6147f637fcf557. 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/ZB80H2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ad9194ca4288299b96c6c7bba4ef3922ff8e9ba1aa3311e0fbdca730bdfda1. 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/ZB80H2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b9e79e0242870b3b75e605cea3ed2130b913e31f2d92770d5ff8211f27bc26. 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/DEY472471714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd513936d6b62a1cbdad154479ebd8f54cee61f9d2256bb1bc621ca57c3a8deb6. 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/DEY472471715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c574f1a58390436ea9d91f90c1c3d8024f2b8e1bf1800b7a923350ed995d288. 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/ZB80H2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3984c4997db20c4db302dbfff8f18c24f4777612987b36a6cd71a4b7fa8bbc. 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/ZB80H2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f794e89264a276100e5a0f381a7f894592d9fa9d39f4656c91e6265bff3af6c. 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/ZB80H2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4d56ea13b8b3857c20506a8a8bce2f049f261ea5ba66d3ccefb653ee4c9ce. 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/ZB80H2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839ee8ef1ce64fc5e6b1252a3d9809e59b506b5b6497c0797c1965bf29a946c3. 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/ZB80H2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d83f69dffed7cf947c55bab0d89bbcf314401e59a19ee52ed3022b29d079be9. 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/ZB80H2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee52c2cb862e126b68c65bebfff6650556820c69b4fdb74fa9a6314b49dc0b36. 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/ZB80H2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec90bc094430daffddfb069c65233fb2f2ee449b2f8302a2ae13ef30170e060e. 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/GX3Q92376237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884f1824ad51030e6c0b4161d03b2278ed7c652e8e20da66a650ab55d2633e83. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX3Q92376238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42a9c780b3b580bdc27579fa812fba2808755eb50c115b154f796a259e8a307. 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/GX3Q92376240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fe4e37b822acd0f113045e2ee37ccfff621dc83a6b7dcbadbd39424907d93. 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/ZB80H2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fe4e37b822acd0f113045e2ee37ccfff621dc83a6b7dcbadbd39424907d93. 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/ZB80H2300039.