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 0xdab9b564ab9ed4e0daa6ae1bf1b2c0108cd5662db8206163a8c463dca49a6538. 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/9b658d9c-a829-4ba1-98b7-255274d21fc4.json and https://artists.proofprofile.net/proofs/artist/9b658d9c-a829-4ba1-98b7-255274d21fc4.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 0xad7fead117ebf636bc4be437e444da0034eb3ea5e4e37360f1aa7be6f5eaa6d0. 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/FR54E1201368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ff004047adf9bbfb691660eb34dbf4ae8493d97555645f27b6074f8f317cdc. 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/FR54E1201372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbe6d495b7a76401b8fb580861c90cf23bc0ac8cbc983e7a34ab9d0db876d52. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR54E1201376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1c152f65cca669708fe99d37c46e69c7457a937d1c1c7d3421327bc2f3d416. 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/FR54E1201380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447ad0a88eae94c1af0b6f6b13294001d804550209bc3cfeee3732cad51c8b4c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PT0BX1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaba2b18e7cc087206ad86c0e90d78baf3894d93501ce9770568cc7d5c115656. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PT0BX1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78729270461c07ea878af5af16eba0a483ab072db384e609a48202385eff92f2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/PT0BX1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2aac92340a2ec4127a830af00c60f9ad1df0fff3e0aa2a6774262adc05ab8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TW1784245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4586cede34e89fd8e6180472744a5465de01ffc8cbbc4473db4ae1f1499e934. 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/TCAEP2046817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f5b21de272ae1a8b5e10d7fe6c43460668c049d87cb809bd858f75637c38af. 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/ESA011521700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01b9f874e9cb55672901d951daa3ad8bb966fa1b885b8bed46389b6a254dc8. 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/ESA011852251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdea82c267acb6189e128498899958b48aa13fd16ab55e0e0eb82ef6db9e4c6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRYAS1008770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39f340a727a0eb7cb5462784917a23cbd55f6b46b1599ff38ad6b740af79268. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:27Z), 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/FRYAS1008763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566a6c5002e9596f1dd13141deb24a895db96ee27d23bd73a42ff61b21fb7628. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIJ2441985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451364b6765ecf8122c1941f9abc4e6d042b9202a8f78b39eea3bd98ee0dbbac. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAIJ2442096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19836057c9b0e299f0a7bccaa6c68aa043274ea5e62409042f0a925a555fab6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:51Z), 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/TCAIJ2440797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f690fe05c0aa35ad1946e3e0d8c9200b44c7bb786f72beff2f23f22c8247b4a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:12:06Z), 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/TCAIK2441055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86510f8568482c479eb01f50531487f6dec74ed1c7141f8c30cca2c004015ec7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIJ2441074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b862d3f40d60f0fef504dff4f627917d8bfc8269ef7f2b48d2caf5b3e14b582. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIJ2441083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d81687e6c49e877bdea5be245bcf2e9df09b25dee33a5c8efc089c98735628. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAIJ2442400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3ef6a9c025f7f5d48ecf855be373297d5038e70c8d35e3058d60599fa03481. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAIJ2442385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc528e6e883569c847eae5a7c057203a146875b101f6c3a1eba649edc9fab35c. 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/TCAIJ2442464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346777a14fc9b00f6be3095166427c99a113fa02043bcf7b9e59beb1c7fa9286. 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/TCAIK2442488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009228cb245cc696f302c15f1a81bc207fefbf0f7b39114413823bfec774b3b1. 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/ESA011521704.