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 0x37a7cb9122fb3665787a221b3d3bf035be74afe3944f45c5eda5ccb2f946270d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f38a9b4-f15e-4f3b-acb1-8840eb2013be.json and https://artists.proofprofile.net/proofs/artist/1f38a9b4-f15e-4f3b-acb1-8840eb2013be.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 0x0ddded1b70a92253ca23474f1d31e5309625f7206d343050743a63621e84c701. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/FRX202229110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b890872e30739dcc266d5833ac75cd64e13a63646801dc340837dab49c8d99. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX202229111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6633a122d04515aa5bab2730434f3e731684e166d6e69ff0278f0c68e0d928b0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX202229112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fe0a1610a286a6013dea6259a314fe195b3060d2ae0ff2d1d6e3d4523cb31f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FRX202229117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269d546d7d7d068e4e0a59ef9d97a00f5a7e5ca4587b6a3f1b46c9aaecda04a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:48Z), 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/FRX202229118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ee6605ab1fa80a73126c35a672ee2f48bc5955e7bb71c9d8d4c620b82c91bf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:39Z), 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/FRX452272806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ef5777f6bcf07df3edbe4115fa5df4986165b747aba0d0bf2e25f23c259030. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/FRX452272809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452e8bb7acea52affd253a0e7ef27c4903e3cdd131f06686ced3cdc16c17e222. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/FRX452272812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821810c2fe2595a2d1c1621ae6402fecd3a2fe65f159ba27c47c001a815d7abd. 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/FRX452272813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf574e5d0ac9b0dce22cbcbe3743f795c5d6c10beda159cfd80c0e0d1700834. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:20Z), 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/FRX452272815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed11cb604effc7851bb20b47937df2c594cf261c9132f9aca151e723d1d4e68. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWS2394913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc355735144c7e2e916ff36227bdf9065d2c69c8fb46a07c461c498975838dc. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:35Z), 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/QZNWS2394920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c6f1f5cbb4ece2f6a62249873082e1e6a083857a235b1655634307717bbf4. 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/QZNWS2394922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe891fb4f3e048804840a07738d917a38a59e667cf88e9aaee89915995072028d. 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/QZNWS2394925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0cad3f3d423d3206429de309594f8db4654fa71a385209bb89034b7a2e35b. 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/QZNWS2394926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a5a5648dfcd858cca84d380615cfa7dbbf866f6740526388bd8524d1c78d81. 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/QZNWS2339323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df742d2bca358835acd1f351ca1772b948af67a235d8c72a778e8dc2f02c78f. 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/QZNWS2339324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a23a6989191f10cd2086788f80932796fefb859ebe144d9afdaeb96bda6f41d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWS2339328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865993fc9746305754ae6189138c07c3069a88028509eb5c253c467983791a98. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/QZNWS2339329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97138d0a557b6974fc923192a20e5956b7dac8f0700e9d520e512d72737ea339. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/PEIFP1901098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32759f406d6761f4d5f3e23ae51dbb94b5745105e75b33d8d950b46a9b69f684. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEIFP1901099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ae28564b0cdaeb99e37c997c84904e112406dc1121edb5e0f49f102bdd481a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PEIFP1901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c1935119b4a929a86a65bc640cebf91efd7fbe131760b3fa8d135773b2af07. 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/PEIFP1901101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5ee81c727c3cceb8eede8c9349c24ff63b075f5ec18a42950062be3b2ee469. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:14Z), 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/PEIFP1901103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ff995f9c4716035e23462a93e47687e669eee49a973d600cb491c71de4afb. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PEIFP1901105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599c1acc328eb77ab11726798330a4d69cfef707e80bf91a73fd51c401adeeb1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:19Z), 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/PEIFP1901106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e6e39c8d3a05cd52efcbadca4d4f6293368d60b4450f0a830dccf71ec13fc8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWS2322867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe468f72c09d2f77804cb590b09e1616acaef90c3980b409864ef3ea04b10e91c. 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/QZNWS2322868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4881c30cc7f95a5cf3913d55bf32483fcf01ac6508a90ef447f932de683f298. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWS2322869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148578d906d564d846892cefd4490c20e3e69b8593e9d4891a5bca4adfede2d. 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/QZNWS2322871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90b282afee1c0e63f49137cbc0f5d1e9512c2718ab264fe26fc76f4bb4b95b8. 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/QZNWS2322876.