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 0xaa5dc822407fef50ff732a1d67655655f7b0d7175538779ba1617f3dc677f6d8. 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/3ec5478e-fdc7-4f51-b9ad-083e980852c2.json and https://artists.proofprofile.net/proofs/artist/3ec5478e-fdc7-4f51-b9ad-083e980852c2.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 0xf31c124686b8584a1702de3be0a7a4436f610c51a7920ae49edada9a311e5eda. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPW2316249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebe876e135665c85a01bdbcc396a6d9a8905605e3d3948f58573e9af6b95b1b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPW2329517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026066cd6e5512bd1cd27541302925d76109152b9724f0cc1c6aec2e4cc91a9a. 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/TCJPW2346442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec5c7255334fa8c9c8d0c2277a231020c11c1f223b04c31af024aa34f4a68aa. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPW2349307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1110138324544c5d40f0364607094bad642d9396b0850a1dae89253d2dfe1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCJPW2351404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a77f43520bcfcbd2aeda2cf73d433beab8fbd36c0e83ca205d7cc8df8ff059. 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/TCJPW2351791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca58c1e9d230ca49d65abb1f54b382153e2dd41b0a1df9513a707cf7f5a85267. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:09Z), 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/TCJPW2352072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64837113d2321e4494a514fdc198aa4c288e813cc240fa66f970a9b4ad9824e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPW2353177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097974480b0874b3837539ca35d5e284e116e76b10bd19f6306d5037060b2fe2. 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/TCJPW2354003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1537363bcb0d57c6c12bf828312de7f2c2b5656051b29cd2a6708e4b4c009e69. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:18Z), 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/TCJPW2357552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b909089b7ce222ef7e3a55843897dbc272e05d67b58643b1d2fa72449ae1f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:32Z), 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/TCJPZ2446585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6313b9b0dd73de47da1a80f955abc751fbd695b017353f4a230253ab7e192db. 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/TCJPZ2484782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72dcefd33810eb6e80d09b54f14973de7ffcc608d19d86a1fc7a7b2fe6f9ed. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCJPA2463037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076e5201cbd7a86d3bb051ba035f69cec6e0bfc802be57a57b5c9aa8a319a2da. 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/JPPC02413931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3604820d43c5eafb260292d8f0ecf5c4846fce4619c68603c2bf097d43106. 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/JPPC02510847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd075f55e24b9c38d15eec8a9dd1ca13b13ff25732f4ca35e15d0aa4380cc9d0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPC02511314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506507ad958146db8fd1825ae9cb57cd1e95954283044c32e18b122cda84d20c. 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/JPPC02511316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a5d3260f93f0fd667cd9c49f95c0206121a107ba9a0c5d4805cabc3518989. 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/JPPC02511315.