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 0x4fbdc547e1ddac67ccc9f3372773481b6dacc70ee946e638ac21d2db0d3f8246. 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/035d696c-e456-44fb-a8b8-ff1e7fb8dd44.json and https://artists.proofprofile.net/proofs/artist/035d696c-e456-44fb-a8b8-ff1e7fb8dd44.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 0x8f076f7e0516215813a92159ed0e78fe47d150987d53caab0a7bde59d8f462b6. 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/TCAIO2499501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86e779f35099e7e4e25a0f7e0b8f4626e21e16e88e02fa09cf775c553724c3b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIP2499525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f99cefa57f8141d66abdab52ee0e7f640feca5fc116e4282af5ac1249bef7b. 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/TCAIP2499428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37151161ea87d928ece04cf5d234fd1fa429ee8e023fc24170f3d3c0f07d014. 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/TCAIO2479310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25381aa8b35a70beebe7c0a164ded2bcf0443eb7c08e1d1a0a9eda63d53a9a6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIO2479382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68af4d8259d51bcf0d9089339dc10c9ad35475cc34bc246e8d98a35f097e4253. 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/TCAIO2479389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257128fc0fcf79b59436f681551b4f2575caa3f4548b702ef097294af13e9afe. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIP2446619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1e1061dd804dfe7f8135e17aa4eac1da6fd2052c58a22aa2e5883dd8dfdde. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIQ2446667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1489e368a135da1ef43a4debd254b7a039b885a3205f1fb4a2416a3132a9cdab. 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/TCAIQ2446633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f83e5fc6edfd36cf3b058efda2117de3e55fbaa6db11180108a825fc9ca5e0. 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/TCAIP2446643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccf0050994926092994f1c2d3f55eb2205ce24da7c6d5881af8ad8f05432931. 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/TCAIP2474168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad4ea6ee995ce1d9f4716f143b6eabd518a3de670c93acaa8f5afbb85cc74e4. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAIQ2474223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b907354dd9a2dd2625fd6fdd34c1239f8b0bc4a7ce2a36a9b2197051edb80. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIR2447426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ade7a9d0d2a141d68efe4b689e61a5c2bc20d6ac2fab9a25e37e45e1dde4132. 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/TCAIR2447407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89273a35aee22c95dbbf36966b70d2ac0670e96362cea738d64b73a209876ac9. 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/TCAJF2584329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6579661bf7da4b1ac28cde8c1252eb78c24a11d2446031e73c78b5e25c7774. 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/TCAJF2584355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd5a40f58d39bbd72b33d7043504d3663b1f395a0a6a1ecc44ebefb953f64c3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:52Z), 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/TCAJF2596492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44c75682e608304eaf92a906d40a334b7d5f7004ff2751cf3278842791576b4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:51Z), 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/TCAJF2596501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cc1cab7f4059028753044ea09e00ced2c30757b334feb4b788c912646e6d2a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:19Z), 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/TCAJF2596488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85721d5a72dad62fd8d37af5d7d5f9a4baf729864cce96f5039705076e7d79cc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:55:23Z), 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/TCAJG2509070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf520bfbd206662ceb90ba2f12a27bc8237a9a43ac8767c4f7235e9459c00c6d. 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/TCAJG2509061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c1e47ff13b51f0ed7b280c6b4de716b4b8794db2e3715c3c32a2040f4514c4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAJG2509046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b77552999b72cde4148eb5f0e041d8652a1afa78b28d4af72114204fb9bc84. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:21Z), 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/TCAJG2518294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba8e56f5f3a12777d0df01c78a83ac6d6f5b42377a6074ef16a12af80f9638. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/TCAJG2519434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80da2ae6431b9f4a5a5658650db9431c7956faa15fd460dba412c8c4767d3619. 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/TCAJU2511255.