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 0x39faabadaa923958be72036d7a75111aadbe1e2f8f85e57e5a8041550781a7c8. 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/63d2f864-5edb-44ca-b867-00b99a87f84d.json and https://artists.proofprofile.net/proofs/artist/63d2f864-5edb-44ca-b867-00b99a87f84d.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 0x1fa00842ee108b012836504b4c1b4da04ae70a3ddb4155b753f85b881f28b2f1. 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/QZNJV2100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae6d352deb636ee7caa025b3d7869c7ce8de1816d5a50d2e4d51139c11c505. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZMZ92220168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc54edf88261915b956a4353f5f3482c0216640eea99af3c1e19327d25f6075. 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/QZNJZ2103277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff39c6ac7ce91f692fefbe3a6d5bf874307be69ddf1925c8e09893bcaa73b6. 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/QZGLS2290163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7bb7f07cf070467be2cac7ec4c7d2ba2a1c74fc8852cf7f44c98aa713cbe37. 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/QZHZ52277174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494387bf53bcc0b4ce6ea65a0754f08f0391ca9ce25de48f77a7f7977af330e0. 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/QZNJW2265746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec104691f87e6764954e95673727a27e35abd145dbe8162e3139208761f033. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTVM2277625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe111259f474eec103c27bd465dfe0e9e1b9c1ccc1d721def1e6ea35667e9b1f0. 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/QZGLS2341693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4008058c550ee40a90b961fe090d433a5a98b004a60685244d5ee4a0e9a6a0fb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNJV2382144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8ea2b2c7edaee0f6b26602219ded6a20a0a5a1d8071572d8fb9e75212324e. 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/US7VG2475681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75ed0bb3036a8df8356a93fd50df4d073bc6bcaff33d3b4f44cc8b4e85a9ef3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTVM2414383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfe8d7163b4f7cfb2f213217b6a896d432877a5af1519c25b2dbd001ce3439b. 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/QZW9K2467884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f686496ef88832f5afef1dc9b7ee2369f2f7eef968e0ff4d2397711ddeabd9. 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/QZW9M2452581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f63b56da03acbae9bf975db2f265216e77e63c3bc1a187f55ade711b55d97f. 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/QZGLM2503701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7463120a0e79ddf5d42a70a34fddd2ba1d6da8aadf8bc4a380a50e9678257fe. 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/QZMZ92522010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f15632cdec732a021239ea7d88dbba53e7c59eac6305e4dbfcf9bdaf454a7ef. 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/QZMZ92522011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa303313823bd33ef25e889de7dec9bb1d4dbe66ef7d9a20174d1782618fb97. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZMZ92522014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aabce3f0694a96f984d63b2b9d937081df4878268b7a0fd5aee408aed26f1db. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJW2504627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118bc308750e77c7b386b6ca854d5f8af4e83b49347d243f22cb734fa681b91c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNJW2504628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0c9f91ca0dcd56359a63818d4ca3fa114b40c53502e1ff512808cff3270bd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJW2504629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe767aad1b3ec8853a581788bae28f8e0b98ac10ad6d755e4acbf7ecbc53d2e90. 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/QZNJW2504630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abbdaf71dedefeec6572d6f5f80ed6371b139d5b1234e21d77cfa8cb8d5538c. 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/QZNJZ2529310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e59fbbd0f09d91662b11e189ffc682d60d1ea8a79c0ecf7650d130db650e7. 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/QZNJZ2529311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb624da54d92b3f92b1f0e7064871487cf7d19a1d42b47ee90b9b7f096dd68b22. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJZ2529312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc901df8e3750b1fa6128045739befa2c7f08c0ba2ef433145770808f9e07d23b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:45Z), 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/QZNJZ2529313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad7e88bbc0a707fbee00200d6c3e2f1c1f8c7effe7447155f000ef7b5b64df. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJZ2529314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f750db6a758e68d61fc267f31371d27ad3a6c114774cee14c4a69ede7e2abd1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTPX2572935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c30a55d49f47c352b96b0131f3462380b6f4e55949c7f45e5f9973df278ee. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTPX2572936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ca8fd138172208db768db3a57e35861f68305d5c1ff8a46a843062265017a. 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/QZTPX2572937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9200f73854667da3df94ff59eb21d18e4c8d076cad54f9064d3bae37818bb01. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:53:29Z), 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/QZTPX2572938.