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 0xef9535706dc2a5cf8ef0de83ec44318466e30affdb3fcafdb2943ca9df6ad71d. 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/43aa18a2-deaa-419b-876f-78841b30a152.json and https://artists.proofprofile.net/proofs/artist/43aa18a2-deaa-419b-876f-78841b30a152.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 0xe9848a9943f030b1dbb3748b538903d2244e7cc834e29758aa75b661de4922de. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/INL239024593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c422849f1e3e4be40434cbc07ac1a22bbb4fbecc47cb0fef0bbc752e8e709d2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/INL231450012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb72538f9b3e534859ec0a0221be0826b4277ecf68c11450e9488061e2da37. 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/INS181700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d158524d8797e53016c3b3bfc97e54e14f10365d7199e78220d971b217ba41d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/INS921700970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570a3360f974fad17c79ec1a45ae3931372c431e875dc886117069c77357ded. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:19:34Z), 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/INV111701374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe668bcc8a298fc9e7fb2240c953bb35acee418aa78a26e0769f40eca34d70b30. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INS921701143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cafbc1a5c2f3fe70ac162334048105839308c0442df2a0f0df84df8c80b024. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR10S1805356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94144e3db2010eef7c4bd7180b912a6d02a8c0510515cccf5fa69115bcd4fb3f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/INS921901626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21e6590bc4f294b82593731de7bf8c82cf6c7cd653bf863bf9b686ce9ebe4f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INS921901633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ac759c1e7d81b550f7d9e5abbbca339d5b00d7c3345da4de0c25c96afcd40. 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/INJ221902198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c7f39db524a1ca82e022358d37581d27eda3479817f2671ba425348ea64867. 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/FRX201929175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990e4c86236c075f96b92e058689250cb1b39039a10778478b204a075169b025. 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/GBMA22043878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8159154fb9b9c6c0261f76ace3e2ee6147b17617dfc7d9e4a76c3ad1bd214d. 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/INS921901631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4b2653ab260210d0905d4112c28356f779b479061246d303f107afa70db151. 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/FRX762007002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1514935a1854ac456397de958adcbbde74c0498debc494c5eda38b2b0e9b59d. 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/INS922100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5dc4a0c523bf935a4937284f290a949ba77bf0197650c0c7e2c4adc093de11. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INS182101069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b48fb93ca0f92e40c7e0e937cba2d49f306b741337de1217edb8beb8e96a4. 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/FRX282278191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468a0345f49d888161024767f8ad3f6a7b3137ac038fa4f785fa751da722ec9f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX282278193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63424d975b6d1c68621b74686b92a1a03a208674b285e6e5b5fb95c300c509. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX282278201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc70d7e9fed0f4f63ca108b92713fb7ad140babe29470cd75eae2cf5799dc0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/INS182203486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f4c04693fa3b3b8a8499c38e44726c979f7fd703d114c0fd0a3ecf07b3c84. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/INN612300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf5386aacf3a65a5e5a11069a4eeff68c44cf2afbbf30f34baf73eb1e77a86. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/INN612300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cd6275dae2300304363cf2141b9beb244d934a72b98817df028689c420956. 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/FR96X2435733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a085cc678401f6f8dfb4306a5caaabd4c8e970d7e65466e09297161b411a9c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR96X2435734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3241c592489ff17669c2481470b32b9f44f4aba972539c4ae836d736421a48bc. 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/FR96X2435735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed53871c8c567f4506206dcf231b12691831cb266680fccfd61b28702d1ae673. 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/FR10S2398961.