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 0x20dcfb397464d9d870f3df54a8a2397559ce3df4359ca5165ea1070175120d90. 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/25716f45-cdf9-4e08-ab7b-613d1049fdec.json and https://artists.proofprofile.net/proofs/artist/25716f45-cdf9-4e08-ab7b-613d1049fdec.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 0x0e41fb057f6464a036648d72d8c181e1e7c1cdb9edb713e2d872403472ee5640. 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/AUMEV2436479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41223ef4201a8a53ea51b5f8af4f779974794f037cd57461dc9edb69822b489e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAT2437181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0be0add58599b6935022d8a5bfa14c5bd19be3644c175d21ecf4f9f47c1c4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN82423357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6823e8bdf632e8fc37e929b73139766437979d92784218ff55e4c6a861cef2d1. 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/QZK6Q2478260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f242d5be54840083ebe3b8875f3771031c30cd2e52c49ea87117b587647b828. 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/QZDA62418643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e0036a0f25e282708b939faaf37ec4106e490d7031f2b959724d18e0967ada. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYZ2430121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c58a261765f1b5362b859b07a3866a965f4424ad36bcfda0b8f3c39c4373f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZEC2305775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f47f5940b48586cb9afd8f3beabe59a4459e8c0bd1842b6fe7137938f67939. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFYX2455496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9d387f6e4f614b8f355e30fdc131159046c64c1155c5494d3c7e3b7c3eada. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTBA2390135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d26db088456c496415db665b1bf62e65d91eb328469c536044ded80732124c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAX2310283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3735380fab4d96321bdcfe216aaead5b87872a38bd5ec8f649aec7ed77bd1a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA82308228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab2b8fe4808b7fe0c182eeb8ee402091f8d410f0484235d5c82236181b576a. 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/QZTAU2139760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50714dc7ef53c4a4f3511ce2c0172c4fba006cfb2cc3a74fdb5319d10722410. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA82308229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8825295793634e720fc19950645fff1275fa61ae822505f5673c2d92196ac9d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZQ4X2200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b965c6aac3f9f6155cc12750fb60988fa618039b36701e60c304aec24906961. 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/QZK6G2218472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8731d5c1866dc9e61e53b8bfe384f41ddf5b97c66d8954fc7a25c971063a7e36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNB2221628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab2b8fe4808b7fe0c182eeb8ee402091f8d410f0484235d5c82236181b576a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAU2139760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa829d9b4d5316bd30f4abdb0711a7044fb1eef67ec70bbf8d70fd466a4cd7127. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWR2121534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2bd6df3767ecc303b37904f1753ce4a8f37acf31a16134dce6b41db1ab1f36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6H2157492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16bf67ec2caf94d36aab91f2bcc7842c2073d6d2c866920a343d39d8f71a34f. 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/QZHN31911018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc443ca2f764c907aa6ec2c616ff8b111f5005a648802f97252ce49542943f94a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USL4Q1855122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eb6ee67aac1c1d2723407744792d36c7fdbb4903af61a19e20e67ce465cdaf. 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/QM6P42475300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac106a1bd35bac20749c34c3310d5df6104491ab6ca82e49bbd48dd73f7eb160. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB52598203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e42d28fb4687ac6b15b545e1c804e676ed0e30926dc185f5325936332dffff. 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/AUMEV2551348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce24e5de36497c980922b8e7b520332e107ec5b320f32964a2bd3556cb5974. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUMEV2554723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f318b6f1eae227ae7b33ce21fe0c59e15518a8d9d79ec4c638fb5f91116ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6M2545219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541bd61c2017bc5ae6d99bc221bfe50e86bc5073784356e83b6d6e115f65592a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES62510545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf444b83396b78822d302b1496bad1f86df76286e40388aae56c3318e250d3ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUGBT2489271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775efb97904ba0ce33bdc25b96734736a8e97dbbb4c4e2d891c4836f84ba570e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9L2440670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c75468620449edf904d1579c7a1bf255688a95f7871fa6be4db85db949ef7. 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/QZNWW2207433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829c0e644f21833cd424f39fbd76b45e4d5589b6ff144ff82a64fb3b3bffc40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6OO2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe22749bc0da76129dc625c0458e48a2e0a0b64f1af05ca71e121215125ace. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNA1968807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb9f92a95d30c5fd83f828e215888f7ecf9ea7a85e12f3e7b77003d06ae5f54. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNA1968808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a633bbf0a7e8b1d6102290d023b40d5eb2eb1ebd2622f3d60c8b02cbf3aedbd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN51924058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16bf67ec2caf94d36aab91f2bcc7842c2073d6d2c866920a343d39d8f71a34f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN31911018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26c10991dc0f6b5871641afc2286b28640f42de9dbdfeea07bf9475f5015d90. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES81965142.