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 0x398100b9ba9c98e1c164837ad5e6bec6f1a19461f95421b70d078576dd3d6747. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97851d52-947e-4d08-8f10-7faffecb89f6.json and https://artists.proofprofile.net/proofs/artist/97851d52-947e-4d08-8f10-7faffecb89f6.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 0x9f89ed6dca35e60152c8bedf31f8c7060d51ed858a0ff82c2c4685bf8fc6a9d1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR59R1809627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5f0c79dd2345dcc897416f702230b7d43ffd130ea42e2ee04ac78737509c8b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUUM72101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5f0c79dd2345dcc897416f702230b7d43ffd130ea42e2ee04ac78737509c8b. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/RUUM72101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dd35dbc229095b3ca9b059d9c2c3203b4d143154bfd0b2b131e72eb0efd297. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FRX282204650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779277235d823ea7d9d9b38fa6f77517a494f844853c8015d0e92a035ec8220. 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/FRX452207351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d883371902f1c10f259e4e951e70f08cc8a76063e8a025607175bfe663a7df2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:02Z), 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/FR96X2364869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600b1678b66ef00195e2c9f39c3d86ac2b6d585ab32f2991598132f6947f6e80. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX452366592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa207ad76ab1f613e952a9090c305f272966d65f08dc7bb2079e95cedf1be8e9a. 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/DGA052348110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12714fd21ebed3003c5d9109e42927f38670e6014b2a56b00371c859b2fc904b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA0P2332560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443c816d76ffcf8c1c5db1bee2c83dc89133c60693801491137a39bcfa59db43. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA0P2332562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83269a58da634eadf6a9ff40b88dfe4517750ff2ca966af45a961e823ff0be56. 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/DGA0P2332563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0af222ebec93384a6450dfcedad06db5f4613e6f473707cecc3faf6ba710027. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DGA0P2332564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4642a3a2a4aa0880867d0233bcf54c43d5540014a800ead9154504b98b8311c. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:30:18Z), 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/DGA0P2332566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1009f54a0d203084250567099659b067e9466859545cc9897cd3d920029b9a2f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0P2332567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542bcdf27e015bf45fba14bead1d57485d6b7306bc48dc096ec76b6f852b23cf. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:42:50Z), 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/FRX872436941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd32ff6c8a8e0de613b97d0d804d45e867c9c544a3113ae2c1ceacf8152f2ef. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DGA082443257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd7c3502337235b4ae0be3fb73c34db450b77e62877a30ef42c5b19773efa64. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DGA0T2446971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9d72472309e18d5788c00789efc95fb74ac100881cf5b41232aba44d08697. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/FRX282512167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582ca632bc039621bf5d5600ef1c299aec91e6d5449df0e389b211639383d898. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX202573943.