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 0x19ed50c7df2222ce29870447a321415f43387013e2e91cd714bcd69f46fb4c9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98dfb7b6-64e2-4d31-b5e9-efbb93e77443.json and https://artists.proofprofile.net/proofs/artist/98dfb7b6-64e2-4d31-b5e9-efbb93e77443.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 0xf7e0acdc02ddf2acb2d1a0b0c1b0ac337babe375bdf8ea0a4f28bc0e16fe7f2d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:38Z), 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/QZHN82375658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf402707d615a970ae92cd5f10e9415fdd100cff29f1481db2ecb857837a0271b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:31:23Z), 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/QZNWU2361288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa55aa3ca754874fbb5dddc544a7949f0575586e1187bb18f3a920ace079c38. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6P2388100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f624e4f14a2dba29a604397a607e9b4780c84edb4437d16554a9ded608ca2. 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/QZNWR2332554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa351008d3e5b5fbeb90efe38b5e03eb21e76bfbee6eeb1cb088ee09416862793. 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/QZTAT2334489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf460a4dc53ae74d3ac5f69df0c3edd469b20e147779936032905c3df592fc1b1. 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/QZWFJ2368174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc441877bfdcd5ef1d9fec2a7dd4fe85c7dd182ce9e6ce1a4f73d70f4bba20df0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMER2463656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a0b2c025af23cf0797145f8b3364966833a4d0a0858bb56532b88c828d3485. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZMER2463658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585488e372a7fd9e89748417c005518163708c30c032b8935339220e0759c6e4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:54:42Z), 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/QZTB52463590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e2748e8856406cc81204ae36e72aa3be414d957842393dde539820a6a1ddb. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZWFM2409918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82ae35bab36324ccfabf4e523a0658c4da36d199a027ae00e28c227418b2d6. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:53:25Z), 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/QZZ7K2420700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c99773c0e49862fbb476cb18b0b2c0c09727ecf9d77a4dd5543cfa0ea9c5e9. 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/QZZ7S2481775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115d846092d4b23bc09565658e39818c7fdb82c108f317c4591eed263e1a946. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA42502960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e31ad43f333b37a0995c5cd91471c184a910cdfb5d393d20083febd411b65a4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEZC62595936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7bb82adfeadeb2c213f54aa4dfa3fd682e111d381238507d18cee146ad9224. 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/QZHN52525055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115d846092d4b23bc09565658e39818c7fdb82c108f317c4591eed263e1a946. 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/QZDA42502960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da8c05bf6442e0f3ea397035f0da4933e3d87a6c531f831f1b589f81c5f9be2. 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/DEZC62593412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e2748e8856406cc81204ae36e72aa3be414d957842393dde539820a6a1ddb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:26:02Z), 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/QZWFM2409918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c99773c0e49862fbb476cb18b0b2c0c09727ecf9d77a4dd5543cfa0ea9c5e9. 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/QZZ7S2481775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc82ae35bab36324ccfabf4e523a0658c4da36d199a027ae00e28c227418b2d6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7K2420700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eaf93cb222a2c7ad556bb64cce633a48faaa4c8807e20e1ab9764c9f3542cf. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZK6F2558714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fcf719bacd251f86a23796e6e348602c1b9d1fa65b615ddae8ba56e7a01b18. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZC62595940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e4770cf175ecf8a2058fbc3b6725dfd2c8030768df5322618e76609c1a2c44. 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/DEZC62431594.