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 0xdd3b52f93b0841faa962f5420a32a1bc0f2387cd41691ddd23bec034bc821586. 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/a35bb18a-f285-4929-b066-1a89a3eb12e0.json and https://artists.proofprofile.net/proofs/artist/a35bb18a-f285-4929-b066-1a89a3eb12e0.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 0x75acd13176b00ad6304e62dd57072c240b0649ccb89e9f12b575290d59624867. 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/DGA052084973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbb332d87ec3f2e21427213c40fb4ed528e9a48786e1151fec10bf788ca18a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T19:01:00Z), 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/DGA052084975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860cb23a6cc100dd441e674bec85eb9ade03eb192ca3880d3444c381d8648308. 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/DGA052084976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a47f427ff1fe2cb9d0fa295baf10438ca51da12a56fc384f34d60c147acb80. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX452135799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc857cf59e09bfa79dc2c4cf3a425338df0b3d32329a50ea0077d1ea9251e6bbf. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:43:31Z), 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/FRX452135802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6698e0537c411dae8ad260ff71c8e21473738d06d325974cdd9243872334f780. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:40Z), 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/FRX452135804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d8db818c56cfba1583f3c30d48133c4fab6ccc1e3ea7f1a7a7acf795d1d10. 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/FRX452135805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98f08be85db5f965cf42ba309e1ea6271f46b30161504b026496416015c36b5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:14:58Z), 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/FRX762260320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c8976621d1d6e844dfc4779fae2f5be43c5067efea63f6ac1fe635081337f. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/FRX762260322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7506e36f807eaf5db716f358a3346724a2be01968ab17c66b0081418dd57837. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FRX762260324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf21b45062b1b059e2c1746b616474102ca06c9aadd76faece9a47fa0fb009a4. 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/FRX762260327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e4ae7377d0b5b61f604ac19761d522dd9af3260b89479c5282994dea5425e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX202374856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab2538797879039e9d26e3a898d8891278eca381c584ed128aad4e9cd1ec9ae. 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/FRX202374857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22294cf4a2c8a2cbd13d46644ed539bdcce058825f96a4b4a408284d15f5d02. 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/FRX762401696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d461ddfbe643caa895fb9d910bbb3b0e5abe9603cb422f1cc0d0ec45404852. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX762401697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4d5e6e9184a9cacb1ded508ff82855fd08df448e567d969f6b8ca0cbe5874e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:48Z), 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/FRX762401698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12a80c6599f2ce033525f40a768112da2373869f6bbaca2f855849b8c26af62. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:34:12Z), 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/FRX762401699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e59436fc466aba2a97c87c0ba5520ab66e7d9dc3d98fbb87d4e65b29d1dd2c2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX762401700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b003a52a0fb5b04a50d27d8b5a0f592d2c0b68d4ab8fdc1f8292c338ba87474. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR2X42503280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4663b9fc5995b1ea6d43e19dd562a849b6bcb22d5441aa1c1911f55f54e6ecc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR2X42503281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9956ccfbd3005e532d7bc57175a1bc588f48b34c318aaf1cb7ecb595f2019a1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR2X42503282.