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 0x3eff6e37c2f910e0443f9d91dec1ead444db97b4cd6b47254ca6e94b43444d1c. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/975d2b4c-3c3b-43a9-aa22-96873036f6b7.json and https://artists.proofprofile.net/proofs/artist/975d2b4c-3c3b-43a9-aa22-96873036f6b7.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 0x82cd770b9cc878e39625ac9f829043d7f12ecd9d4898e27ba55b1a074972c101. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAW2203067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf99c6bc363c34ee5294365c770277facb616a9eff450fcd92d2f2c48b03d63. 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/QZTAW2203070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73398d43b21ecea8fe16d33e5cd691d509d311b2d58162f269f9cae6e25732ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6F2024574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda74bd7e5b06e5edf4a5db36aee05e9ae6e4a6e16c0d03aa9c4b9fae7e750954. 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/ITRWL2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a1b00b9dba1d0748d70a41ee05b357aee5ebfd6a512420ae62a5ef236dba2. 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/ITNTP2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59468014caade71b97326474c9c6b18c7e3f67a5aeba62daf4737e4f98979c1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITNTP2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5d3c31dca9ef35bc606dfa49856cb384216c55efc39076c2a869b5adae5b40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITNTP2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d27727f73415344f862ead2dc08e5d6871a69be45cf0562669cef8c397928cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITNTP2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4d1d64bdc576ec4d20bd02652dbc395b23ff2e69730b989215922998dcce57. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITNTP2000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b27bfebf93033203a4bbf8f0df975588eeaa2997a22a4ed7ca1327b3f181ea2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITNTP2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5363f6b00572eb06d3e235e60b83ce58866fe540db258e231f50b7c2b17c57ce. 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/ITNTP2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d119d1b9566b6682f43734fe92933d46e1f8b0798563000d09ce2639aa5570. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITNTP2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d346ae1799d27db6a18910c3cc9abb4b20836b93f935a552a6b7ccb97e48e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEN2437757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c26cb94a5ba7b54d1a91e553f58cad2770673916d417ea88983278ae349c5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2437759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9023cb4b5a066dad05cfd80780e4ed872136193e693386d9d267ba1d2ae521. 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/QZES52482476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd186df12f4e8c602a19510705de23340c9c33f04fabb10ccb10cefee2255d33. 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/ITRWL2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff941d5a7856f51192e134179b046dde04e8cb0217523e0a722300c4dc30e9c. 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/ITO4J2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0324c7530f31049fac1a957811de1e24a637f9028831198a4d55b2c292c0185. 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/ITO4J2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306f2ba128a29cdcad09f9b03948b1524d871e81dbdfee2d954c99fc68f3d74. 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/ITO4J2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30691f28f9cf1774f7e51012b3d63a0b6bbad9b2239542e3ca8b8d39db340d1b. 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/ITO4J2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3345296e66cbaef044de46b2f75074c825f249dacea8f4c82bee4b7fd00e3ecb. 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/ITO4J2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876182d453d1acf5d58f83531ebd2e2fb18c7a92453d80c2f632c5cf27dbb329. 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/ITO4J2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c848c4599026082ddf3d09a86fd985461d4a76514174608bb2550bd70e2f0fa. 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/ITO4J2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b3c07494f01f0bb566536cd588f852d770fd664429a5ba74b005bf8826e23b. 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/ITO4J2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ca012af39b44587d26a56dd176106942df9818423273a8ae5ecbf4243385f6. 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/ITO4J2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a682ee7209359de661d5d7a05df554263efa8606ab1ca2010f0c90f2456f24d. 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/ITO4J2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f54fb8e151bb02e288688f162cf74d16bd897ef5450b2d2ce25ab4e7f06849c. 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/ITO4J2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1412e0e27943048557e7b4fecacd6d62c9707447e47f148f81b2e53c7ee2d7f3. 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/ITO4J2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe708c429965eb6c174550361890600e964cb3a62df15e47d2690912e7b875618. 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/ITO4J2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fdac20a310b98339c530885a834c05c0abc2ec462d053fd2f8c8779fa6e1a6. 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/ITO4J2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac6bd25d7008a1b486dee59e75638e4c4f9592d740ea80188b8f1c6d50d264a. 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/ITO4J2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f41916b4321cc3f2a94380e82ce70264b320dbd963f0d59c311627a5cdfa4b. 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/ITO4J2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a950d7429f5406cd3d2b2ec3d00f9ac20ccb82351f4a26edd2b69f966a8ad6e. 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/ITRWL2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa99f4e3df05f79d7cb93f6ede2cea65de1d0369ef92cfdd22e64695aa1052. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITRWL2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758df398766369055dc432d3942dad211b34d2485cb848e04deca875d9b02023. 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/ITRWL2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd186df12f4e8c602a19510705de23340c9c33f04fabb10ccb10cefee2255d33. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITRWL2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f69a5691dfae914d1f3c1788c36ff42e080058936c5b325b733e54391d0a7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITRWL2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978f06566d3b2602563bde9e56e4624a39d292fee2e6016f24a6c3359193f37. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITRWL2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f0022538d53669f046a5017932607a2ff90d9245a76f25334119072400db90. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITRWL2000078.