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 0x95d031f9068f17a1056ceac1efa1d799c7a1fb095bf633527084109ebde6dcab. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be54f711-575f-4df2-9676-3f63b922d512.json and https://artists.proofprofile.net/proofs/artist/be54f711-575f-4df2-9676-3f63b922d512.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 0x98de34403e75fdc8db804a3afe4bfcb0aacc3fc09755d81b40c32d63c2768d0d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZTBD2528328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9361813726e341a5aafc87949c7865aac04d73de7e49a8ddee01241cf98bf7ee. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZTBD2528329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe638d00d7773841bd44f2dd200e00831991d73508c1615a9d5b43ac4bca709f7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTBD2528330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783e188c6b0d90bed4423fe8eed4d72c76b9b270a3eb402fa963cd3eaa064eb7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFX2541933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a96fac8e1d2c26a3828045e88797f055d0ae3f07f4f1d4abfa6f447af816fad. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZWFX2541934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd369f6dcaa3c34edcdb9df8b785b0c7024c56b1a2b4ed5ceae4163ea0b6283af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFX2541935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434611ebdba7acfb9530ca481ceed3c6e4f43397b9a88743d93be9ce11de17f0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:49Z), 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/QZWFX2541936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee7f33828c74df6176b704ba1c07667131776cb56c39a1c362c66979ea95554. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZWFX2541937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50cc95f54f2f8ca70818598fee532c42dd05f134035f4342ebf6d146d0818e. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:43:27Z), 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/QZWFX2541938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb888702cef546911a9d0434c8f5432cff2c5641cdb24cf0a19288ab9632662d7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:49:50Z), 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/QZWFX2541939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd83af8bf9bff157c6d74056d3dc31e0c15604ba134862de827791b6faf98f1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWFX2541940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec89acff7219ab2585da1ad235fb3a4bda5b93c1f214d797c01cb973360fffd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFX2541941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fcf7873591ed85c6fb05d7241d6ecf5e90c43833aedd7d74a193b8653b927a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:17Z), 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/QZWFX2541942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931b11dd4a1ee62fcfc3a5b1d54b1bb9a895c3686d736e5532fa60cfb252e1ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFX2541943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf6f0ba3575b964f532c61b27926e87f197014945bd4b1d35c8cd83e2e2aa54. 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/QZZ782507688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2472185e890e5128798e4849eaa1c63cf9e96737b14eaf10e4d2cdc7538d04. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZZ782507689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea612a9ff1ba8faeba0fd47cff965fa27b72b3c3a2f5e8c350773e60fc06d21. 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/QZZ782507691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f804e650e2dfa24e793d8420857aa68518990b0c8ae52d22f7d0b802ffd4e3e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZZ782507692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca67a05a3d932c868badc7b143238f619524350f19b167e2b541b9e32a0d26. 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/QZZ782507695.