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 0x543823a5d61ce156d656670b09e533f11c3d1d4ca5aac032d6514875fb8b4e9c. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/284f81bb-0317-4594-96c3-f02fe25f2103.json and https://artists.proofprofile.net/proofs/artist/284f81bb-0317-4594-96c3-f02fe25f2103.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 0xc16232872a3eff701c12ed7568907162835a9ce1213c8bea411cab341f869c4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIBAR1300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe1126b03a01e5b8b84c3f8fbed7f57e507588e72f38c4bd614f91d57f4395. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FIMTA9400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ece5340d8e484bb29112a814294d74eecbde08bad8d86b229243868853ed5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIMTA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6079befe696e08f19e8563a8bc57512668f5d0cd8edff5a2c8c4a86688f21. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIMTA9200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28226ab6235c6de05ff780e8e26fee71eefddbcde6ddff1443aace220c6651. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIMTA0400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57ec7ebea5308a3bff03c044b6bb454f84ba276221381a63d6c2bbfdd837f9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIMTA8900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c638429b39de94a21746b2fdcc49331d5136b71ea3e0b02ef440be89a39e70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIMTA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd481e295375bf0f505ec9899d3a0de605dd4f09b0a34a3849886c84445428017. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FIMTA0400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae6a446dd90219c271a3424a2a4fe3e63105095833697fc2e368a09e2ddd67. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIMTA0900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675bd60202629f50028380acde84b0a60190df9c4221e62d4894ac8e03063f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIMTA9600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c638429b39de94a21746b2fdcc49331d5136b71ea3e0b02ef440be89a39e70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIMTA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071a28e31221a79e143b457b6cc30f8faa551e95ccbf52984b78b1c7188b923. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIMTA0900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5912d43682d596d37ddcdf327a127ed93405b372960b948630395573cafd546. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIMTA0800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071a28e31221a79e143b457b6cc30f8faa551e95ccbf52984b78b1c7188b923. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIMTA0900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9514ff6689d7fe36e264e5ab8bca94314db1d2a65c17e2f0c87d7b968f21742e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIMTA0900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78e8cdb46ffc0a4ca2a024abc99a7a685320d5eb0714a43771927112a4ba9d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIMTA0900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5befb424798d7312a4a950f2dfdab563cd9ad3f5e6eda03bd10a749859ef5547. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIMTA0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9043d466ff6706df0a1db3e3cd4ad8037bd09a9738b2276b48c714660214372. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIMTA0900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac51835f157ed509ee57e82052571d19c63ef3dec46d077bcd49774024fc51c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FIMTA0800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93933691e365601d521703c9002ec2bc2e012628273c89f356704b4388102c38. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FIMTA0900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a188416fa54e4c3224a779d1196f9213597b618ccd26ef0bd6dc689beb527. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FIMTA0900027.