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 0x44181f463d87ad7f352bdf63ad0d8ef646cbb7c0d3914a5f48fece7b098ea4e4. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08e1b84c-695b-4626-9293-fd95a7f2b978.json and https://artists.proofprofile.net/proofs/artist/08e1b84c-695b-4626-9293-fd95a7f2b978.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 0x49ce2e95835eef64bda124e5fbf63df5ca35f57022c1d916dad4819cee831795. 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/USDHM1901761.
Marching On (Live at Oasis of Life, Vosloorus) (Delux Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743150d30106e161d33b717e2a84c17fb8f1ed92dbcfe0a95916fa6fa87d2ee8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:26Z), 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/USDHM2116449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95505e6d3364886731ab2b6afc79f934b3f2d0a337b463c39ab03375d48ba270. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USDHM2118406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83278cd4868f8cf18b7074ef92b636a6c223d4613b719ca09f19665c9253d80a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:25Z), 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/USDHM2118408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91dd88de6edcc8d1b19f54fbe36497ec4a9f821112cb7a25c07fbac0d4babe2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ZAM1L2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d00c58f6fba04789f66ceb91031417b7f1adbb534f5fb14b9b67edbbdf73f1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ZAM1L2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97154ded3ea785ed6ecb1975de6a2bb5a301fa9eefbe2e9d94e23009bc524e4e. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/ZAM1L2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8dc051f6159857d501c560ec0fd9cafafcec3db50c05a1c5116e2af76a6933. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:50Z), 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/ZAM1L2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa42dbd91cc5cccb17a4270ee2749b4f7e29e9085e6062c782400df7382bb0c. 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/ZAM1L2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da138928a18aa85d1b1def4360b2bc08c506989e60d82315a5d0dcdccf8de11. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:54:54Z), 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/ZAM1L2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7841f72ae0b99071cbe45d2661263c242fb9836fcc8af5e99f73d9561cc851a3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ZAM1L2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7ed8e03f7788de02ba7fb31d3be3efdc00c0a3b6f3c6cb63d1521811cb7f8a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZAM1L2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a6771d2dcf4d7dc416dec047185673d2eacf1b873fe652b3e7ce333d80488. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ZAM1L2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5fa52ff795bcf24e6be5c4117d217e224a97bc86f045dbfb5dbe638a14a41d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAM1L2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc33c15b3456394fd4f7e77589c1790afafe026e9fe57926c5fd5e553fd2da79. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/ZAM1L2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f5168c4c8e72174f8f642a131a119268ee8a2e58007693b3112795e53bb7a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ZAM1L2500014.