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 0xf26e8f6b2b8d1905c477b50a7269a3c567c9e438beec5d61a04ee00815d467e2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fbc11fc-7348-444f-9524-37d2f759f969.json and https://artists.proofprofile.net/proofs/artist/0fbc11fc-7348-444f-9524-37d2f759f969.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 0xaca0e2a8abadb74a392a769ca178e7b2b40fc143a75e6a040afd57e9ef041aae. 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/TCAEN1970702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ce139537f3b71d903030d7405048e7296cbf2dbed27cf54601170f2358475. 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/TCAEN1970706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409236555ade5ea3a4e750d7d9c47b2aea391551e37953db9103d9aabfa954f7. 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/TCAEN1970709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45cbd85ec3d5583c22cd507e9f935a37bd29a776fc3cea431ac267ecb202a26. 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/TCAEN1970718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498d7046637dea4745f62a62a4dbc76cb12c4bb543bb42c29ef0952eb7caa5c5. 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/TCAEN1970724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28cc3348afb7597590cf57674e539005eab7e2ee64da0fe60ac992fb5253bac. 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/TCAEN1970725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c69330a99fe6e4b84219b0391ab312d77be34fd2e737202aa79b5b2aa67ca24. 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/TCAEN1970729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db7ddd6b0f1ecd662a4ac8af17437dcdf5a64cad20ed36b33808d216c35dfa. 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/TCAEN1970748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7812b078bcb9046015f1fca33ee81889269d3cce4f87ec193228cefad287329d. 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/TCAEN1970751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0dd6fa53b0d1154a362e77dafb3cdaba5f8ef0830c2fe7adb03c86b49aaee2. 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/TCAEN1970768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025fdec88db1c6da5ffa3a707e45a1f3420e34cb3b67b78d2f9d314183f3e57. 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/TCAEN1970770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f19232da0b5df1fbe5b60b7f14da13d06891cc9889424525aacb13ad4986b5. 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/TCAEN1970777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db5949b1115f726d6c849a8cab75771b8c2e026d78fff5f795308147ddaa06f. 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/TCAEN1970787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3deba567c3aeb5a01e767175af3ebaf31fb47069918fb00a59216af0f2bd42b. 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/TCAEN1970801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6950f8dbde9386040af545f975ede75e70db5cb9ea6e0214ab4dafc6848e9e1. 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/TCAEN1970803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ae179665f3079747e95b6e99ac0a4fb9b0fd54e0cc9f8c626caeb47499d37b. 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/TCAEN1970806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f88693d306a450d240a6c13db9a3ce124b1b079eb9f9b0eaeb42c5e91e3f997. 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/TCAEN1970809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41713da4c2a8197a22f4f9bb21e12565cb1874bc119c9724f6e565b7f961362a. 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/TCAEN1970817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085de12f79c22b253c4d4eee7898fa25b96a5afceef12d6cbc9d219a6e3bddaa. 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/TCAEN1970820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d5d81e8e3d0d7d800473b396412d573abec07fa9bfb0328229ea60ccb9e56. 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/TCAEN1970825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae81504f78c965ecb18b5a7d16a2b7e1fa4027a71acf9071cd7ffd7fdaef1c. 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/TCAEN1970826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd13d4c64deae1acaa65fdb4008ec4769f0c0609012f98446091a9d7a26bbc5. 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/TCAEN1970827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc19f8d492372ec42c59eb2f911fe0e9aaab84832c6488909ac3216815a2b65. 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/TCAEN1970831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f1045273e8332cb6a9963248ff52ed159de923903ab7474c2f28caa5186456. 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/TCAEN1970832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3d1337e87434d7dec92eb9cabae6a82e15d53b28ce05ad90b89b09bde3d83. 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/TCAEN1970840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124acd5b9555a93d9e2b1f3415afa1a88696e0863aafcd8f798f72de3e2e5a1. 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/TCAEN1970849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a3217efc8b9c9ff8300d770a871004836b52f2f461e37922067c17da1a675. 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/TCAEN1970858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f7d3ca49325613db4b8f2a4b69aa0065dbc2004a0c6a328adcfae78346dbb4. 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/NL1LE2001692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe005bc97adb3e6aaf2b1a1e33cb4559ed570365fc5734fae539acc2a21caa184. 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/NL1LE2001693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01449c2089e138f272c2b476cc9239c6bd34a46a37c905284b72a4f8ddf3ac91. 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/NL1LE2001694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462f19206403818f1d95a8fa61f9b030d859808f68b110cfef0b77d8fea893ae. 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/NL1LE2001695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a0fbc9df51b04c2aa47ae51cb9c59165f10f4639e4f1274c8b6dd38f4811d9. 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/NL1LE2001696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ba75b0cb2d1ea36ebe98d75f4b65e65e1299f9130f45e1576c89269aab439b. 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/NL1LE2001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623a8381ae90c205184741f39c43a108c8350f0f4afff486b6ab7221b4e6db07. 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/NL1LE2001698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c4656115235fca8916dbad9b50572a0c861037a5079569fcfa761810772e7a. 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/NL1LE2001699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b6f8a60c2ac2f992f2e0c3d46310e136f9842c22e4ebc04663254fb32b718. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CBC6H2046767.