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 0x48db68b753eba9cba5a13a8552cf37680d587fbfdefaf2efb0d835b1a2d7e609. 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/aace3cbd-208f-4fb4-95c3-be32d518a999.json and https://artists.proofprofile.net/proofs/artist/aace3cbd-208f-4fb4-95c3-be32d518a999.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 0xf84b1e472c0567ffeb7883438102227a3c8095a6015e9d33a3b46275b5b80846. 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/CZJ721700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f738cc563d210c8049cfefb5ade732fc0ac29d2d8d9fdccec60d5ffe98eec9. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/CZJ721900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048318a1125508bdc4b533ee92cec9494189911b350b1297a96d9bd80255527e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CZJ721900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0099449f5df6aba56cc4d289ffe796616a18a2c1062b0a986e6c575061dd637f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:38:08Z), 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/CZJ722200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59687a21397f544793a06ae4925f85a552ce5f71a22955d1d724483f2bd45461. 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/CZJ722200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58548bdb9ac9d923813b7d441e579f8a0763dfd9c2cae1fdf786e64435d370. 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/CZJ722200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc45b842910f88e1e7fde4350bfea13e6d6846fa968bb6d5d15f00f3425b2c7. 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/CZJ722200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2642534ceaaf480073218267c1fa73f382e8999e8394ef15ffc444916c6c7f. 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/CZJ722400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda559793b7f4abbfdbee19d1f2e9440279a41be31f36bd2c65d13a209605baf. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CZJ722400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a4215863ba25b8b1cae613a619a0113f71d63d41a298c594bbba757b35c70. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CZJ722400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154df13cbf2d5eda8840a3aff1512b2661536ac0cbf2022602d5c63f2567e52f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CZJ722400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb673464d1102b64bebf754ffc85583be29bd0be39ab29cd9bfc8d816d35ed79c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CZJ722400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c6fe24c44fa5e24010b1d88f672a50c2bd78e0111cc696951b869449e79f3. 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/CZJ722400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03248fb044a7356f0e26cc903033a1ccb6acc8ecbcf757d1d5748d6fe566513. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZJ722400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a6d7a289ae360010f8f9eb4570b0256d3c6ebaeb11a6504d73275a2d3d18d8. 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/CZJ722400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6355b28524fe744cbeea6f1ff4fb5dada1bce4aeae341ea1b203efc54114ca89. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/CZJ722400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e3e82c91b207d8996bbc7a7e2c55bba90e2309c28e612323c45bd233c2a2fc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZJ722400012.