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 0x09d2980d0c975db0747648da46fd0f47d12d2dd8446bc00dd6442067b800e0bf. 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/65bd2be9-836b-4cd9-84e7-9e5bddcb5153.json and https://artists.proofprofile.net/proofs/artist/65bd2be9-836b-4cd9-84e7-9e5bddcb5153.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 0x98eae098daad1a729833305f6c31568a80919f6bd3d758e75ff99e2db6e8c98e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:20Z), 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/HRA0I1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1144a93da365429f8ab8dc2c9973011316a7454f3440192d23901af0478742d8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:20:02Z), 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/HRA0I1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04f6dcbe3d10a3fb2ae91b5f49652876f3ba297b6f11e9c28c709c240cb45cf. 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/HRA0I0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a931668777705167cad3532ee4288a306fbdfd203505ec9d7d4966c594860b7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:05Z), 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/HRA0I1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fda18c1b0d22a9984fc73dedf7d154652e62affd478abd5f394644f4fe853e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:54:30Z), 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/HRA0I1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b39993ee611ee25923ff4765077a2414e07acaca95771a66461ba0f3514064. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:43:25Z), 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/HRA0I0400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f2c104cf17061f5e694f1eaf2edbdffd9650589d0df55854f1f683612fef9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HRA0I0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5067917c62b84bad48093486c35e1d7d7b032a7d22114a26fa179bb64520ff57. 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/HRA0I0600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae236436b7f8c1582c3238f64d9d196d766f6978259a1595dba29c7c9be4a7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/HRA0I0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb1b98229534f4fbe9c676e7a448377285555a0b086879d865281325db53c07. 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/HRA0I0900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88fcc026d6f92efe6d94657a99a60ee07ae50e333dabd2c63798aea455a8901. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/HRA0I0900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88634ee999a70263b7910d44493c42dd156a12530d0a8715b09ec8d6fb6a8211. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/HRA0I0900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb2a70819b7bdd3fd3819aa78f8189799ba17f2ebd25eb4beb7f5978d4b637. 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/HRA0I0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe380255c69cc9f1b1f9d554581d1b4fd6b401322bc6f0de3fd17c763e49c44e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HRA0I0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a0d2b03e705a39d34f3eb8c66e7021468d2bde21c74e099e591a6d616f74a. 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/HRA0I0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb1d8e16b4fc7ae99c53569bc954dcd66372187425906bc42157cd17fb2b6b2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:00Z), 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/HRA0I1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d868baa4a4499a0ea307e40a5e817efa3befcafbadc04d60465843587d2bdf. Chain 2 (Bitcoin): anchored in block 957534 (2026-07-11T07:10:38Z), 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/HRA0I1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1806a75c2e16c259efbf72544d247811ce9cda7d23e8c78794737047efac9ec. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/HRA0I1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f57b8291bb90318a8c1fcd26d686cb2a976a25390d7cd365ebd50e8baf109. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/HRA0I1700004.