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 0x83e57c4254b0e1b7c9305e540d8d032845fe4ed09e393536f89f1185508e8174. 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/fc8cbcbb-14ab-49aa-8654-c3148e4d860d.json and https://artists.proofprofile.net/proofs/artist/fc8cbcbb-14ab-49aa-8654-c3148e4d860d.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 0xaba84664c628d524059b66913a30f0324f7eed6ce545d7be80a2443bcbab05b7. 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/PL0H82500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be74aa3f7d53d9adf43a98e470816a23b0da7339066bf2da4e1049c99590443. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLH342500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fe484b7ea0bf0e81c31e7e2e00d6f0cd5bb63a9478da2ba2fa980cea327cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI365655960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f706cf38f1117edd69c3908262309881cdbddc8d680dd480452d6113201da6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI361892250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c558e8815496ee91d06647f706ec8d24d67010c454727d58d0dae97146095b1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLI360411020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a867c215a29c78f065bdb73d5651668223ba41645448eb30dddf69e759a69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI361892270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03e564396bc571cdbb4a28e9c6beb0a4266d860f8abac4b17157718e06aa31b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI361892280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094fe484b7ea0bf0e81c31e7e2e00d6f0cd5bb63a9478da2ba2fa980cea327cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLI365655960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5ea9c314fd37d915eb4f73d228f07a391bcfba852edc7803d260b01ae669b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLI365658240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9743a6169cb8d8dc7734e8727062b487a9aed620faea7554bd2791c8656202a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLI361892311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79499c5723aea79ffc96c574e839501c11c9f4f2f609fa2bbcee433df7f2f3b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLI361892341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd96dc4ef8ecdb81773bda98bbf8d9d4507e812acedc624e542776540f23d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLI361892321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df65d4dae0ca1effd486699be701b077122e43c86084e7d9131cdf9f3f252ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLB382500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f257cd09e3d1191162ccfa2a2773f4bb0d56e9605b3d5fea4c1709f83d9f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLB382400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db6dbaeb65c83aef6a6383cf73cf579bc20f9713d094b8cb4e278d9c2a8d780. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLB382400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1576fb5e89c5e037cbd06a3212eef74f0bfda689ce90c04e239d2a91e8d3377. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLB382500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1576fb5e89c5e037cbd06a3212eef74f0bfda689ce90c04e239d2a91e8d3377. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB382500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db6dbaeb65c83aef6a6383cf73cf579bc20f9713d094b8cb4e278d9c2a8d780. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLB382400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f257cd09e3d1191162ccfa2a2773f4bb0d56e9605b3d5fea4c1709f83d9f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLB382400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db6dbaeb65c83aef6a6383cf73cf579bc20f9713d094b8cb4e278d9c2a8d780. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLB382400968.