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 0x0cf5300060b191f8b2570d1cd7a5b84e62a3734b81e5a008be5a1984b0db1fd2. 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/8755c2c0-4145-44ff-aaa2-c018b72f5671.json and https://artists.proofprofile.net/proofs/artist/8755c2c0-4145-44ff-aaa2-c018b72f5671.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smoother Than A Peanut Butter Jelly Sandwich
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 0xf74d45eba1f23f7cf035aa5c5999194f4af800ff74a3ae1561accba790f2539f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:50:19Z), 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/USANG2104988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c03d6e531871bf5016db787621702c519eb8d550dd426ff5a236d3b1aab736f. 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/USANG2191354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec03c1fc88da369c3a9d6b35989872bee6ad12db22f23dbf51bb0d693bdd3c7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3DF2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8e46f2aeb60e4cada8de098a0dbb42715ba4877ae75c34b79a8eaa6e153b0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLT2H2100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ca0dd4dc05c6806da9b871041e44f095a88638a4fe6b1509545951ec4a2214. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLT2H2100866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b47221a596dbd1d7d89bb836004d834abf018741dd76f9d99a4499204a261f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM3DF2197998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb20fe1a0a3c72f719bc1c5831223719127f23d3b6b4a5230f166281ea4ce48a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:21Z), 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/QZP7F2252881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdedf2fe782b4376d7a48fbed4802b1f9e0cdeeaa19f2e4f51d72d28dfab3ec0. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/US3DF2242945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08781b2f2cb752e4e15989ba383b83ef7253a622b91679b1698ea47e32ef6df. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USANG2201821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211c4db1f1f9dec9a734392a9b61e3ab95effd37b34b06620b1fa440e77eaade. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:53:50Z), 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/US3DF2291946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9833292088ba6387421f8b60083b6ce22f51968f99fe208834ab29f7799011. 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/AUGBT2209452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3837d517f02fb5a403c94dac6a1f6ec029a58c1f446368b85c98046abc5c1a87. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:37Z), 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/USANG2255129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a2b64176e03033ee00bd01705f42fc75d68cc3bf1150ef92e58e39f6fd1bee. 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/QZDA82382188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e4b6173e6bb20d2a16a9b2f26cba0685c987e8c14109fe646d671efc2b0cf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA82372840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1da2ce8b06bbb38468774b7a6f74220456af22baecdc2c78e504e6051713cfc. 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/NLSB72300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c29bec3a3387d4bda36b3f91b1c55f9c0bac0675d810222111d09c381868c3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA82372841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460c59b8cfae2b5390d32d42d09eae64e6204dce6296201eaf6492199738b5a0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAQOI2403636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbce1df28749030d336da28b387838f631473dce76c5081d1286a1168ef53bd7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US3DF2433638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7bc4420f0be1cfd54942f8b41797124583a1a9849f5199bcce7a53ec021da5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CAQOI2409741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fd78325c93dee7c1d47b2518baa07d37f2f32c0a157935ff14f8d0a7de6f55. 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/USANG2421962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b747c0bd542d80fcfec5fa6b672077b938c962142589641b03dac8ba1871ad. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USANG2421963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2620110e68b5851e932545d2abee292defffca4985ce6961bbd7f3be7a0acc9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USANG2421964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d0b26b9438684597d52c151a65a0000366cae259f5653e28db850e2b09de22. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USANG2421969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00b7edd4478dcdfd35e8ed340621c949ee0e3c0065dabf17cb2fe92c6c17204. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:55Z), 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/USANG2421970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc818c733b062bb40f36e62c3b8870d3bf498a842dce4d3b1828113b96654d0b. 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/USANG2421971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b9e25864ab1f64519ad4a647c9d10489428e7e2d7e738e96f500d9e2c2204b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USANG2421973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e78f625b90e2f55112330e43a931b46d4c1a5cb2234888923876087faa3ac9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USANG2421974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0aaf6cb7dc0c58d3522e4ef37d14cc07713feb9fd4f47702f422eebdb28d1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:26Z), 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/NLT2H2401586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6388a32e0214694e5d2e0312d00cfede575197908d9a21d6dca721fea2117e. 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/GXFHP2481946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f209f9fe521363c1a7aaa1dd8e4ae58d6085d422ae56355987259549ca620. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:19Z), 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/QZAKB2461790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dd3645e1d6f4ec34399b55c03f61c1edee053e65e29727a42009d615211f11. 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/NLT2H2500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd214e9783752c300fff5b1a9f40476483abe267b48d3c6bfa46e7101f9ab354e. 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/NLT2H2555107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a2ab9b06b1698b054b1061405f58cb6105f08560a4687e54216e9e7ae8ca96. 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/GXBDS2566296.