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 0xd9d1cc89ec18d128bf6b7f7474d6eaa1c8b87219f6b989e5b531b6eafe7c08dd. 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/e05a4d68-8305-46fb-b0a2-9bc6673ff633.json and https://artists.proofprofile.net/proofs/artist/e05a4d68-8305-46fb-b0a2-9bc6673ff633.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 0x601d4b8aa5b066628b67fe7de4fd7418b0f29b9246e8b7d4806cbc57200d928e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPM2044208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520a8785cabe2f40c257a4683a15ce41fd158f7699eca89b114a68c0d0673201. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPM2044210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45573e84d7521a408771a819c49262fd4e1e20d71bc9f1dd1e5462de0e0db98b. 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/TCJPN2035974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec3ad40fc0a53b1d08cab1b32b7437cbfc8c056b352e1ef58542a65e65397b. 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/JPG102101146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c11cf65194a11b29090dded612de8d6e5c2d845aaae6a88bfee630254b6fef4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPG102101147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd1246b72390bac1182aa1572c6d13b4499f9281798619af566a290b9782678. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPG102101148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed81c902927db7029868d102b91f7c4e21791bc4766337814a4f35a040628e9f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPG102101149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43521bdd0f4a7c78d19d6234573524410b70260fd91a33706c7ff4c76c1ba9c3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPG102101150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609f6c732c44c9966f473d09fde41766221e6ecd5e2f38298aa1bd72b3e07d74. 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/JPJ902204390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c2bced380a0cfaf98a3ab8cf9b8b69e3ae9b8ba94b4d939b966025b0d58395. 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/JPJ902204420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9bc15aba48dfa9196099f3c17e0259d4b4b7c60bf9d78c2dded51845cfd2f3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPJ902204430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211d7a7a320905d8e013c2c815d7ffc9a23639aa48db251c546faf75553e987. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:05Z), 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/JPJ902204440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ac6b536f003d888d98a76a3f4dce3664348b9f20cdd5958405cc5ab0b5df8. 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/JPJ902204450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64325a464e4a0a126964b55b7b7760180d2c76fc0e7342c4352daf389bfe6380. 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/JPJ902204460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2c34e11b28401702920bbc92cbb4dcbcc858e37efad484e0c0076c718e1bd1. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/JPJ902400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a60dd05a0e72da6cf8ed06aecc4a8218a5be19706a0b9f58f77bcafe508a9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPJ902400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700366e65f6b1458d5e15b21fc6b8cad8000105bfe68b69d180225a703131298. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPJ902400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e035822670024cc7239ad85d41a2c71f84c46bb21e039a159ac62174270e94. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPJ902302150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40643f71645d1e95a001bf5de4b623def201878f93a4e990c74f5a12596ab15. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPJ902400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f00ebefde916c2695c61e84c4a9a7f6962e0ea72e966f67896297f9a4092db. 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/JPJ902403100.