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 0x95c80b76e5b796871e539e6e0ff6dc552881c2a924bdf3cb18febf4506abf440. 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/7d6f99dd-957c-48ed-85a8-d5be013c3847.json and https://artists.proofprofile.net/proofs/artist/7d6f99dd-957c-48ed-85a8-d5be013c3847.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 0x6c2003919f4f4e68873379bd5eea22f644d4b1ca74d9668ab9e7670e879f2421. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPB452005555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76751123731a3299fef37118c9dad8d9668610eeb4964e1aaf240a1cb8b629d8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/JPB452005559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455b2901d7c1723e66df6da458357845b94a56a88689237602086d997746b921. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPB452105691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd50bb358df5f48d18acc748a409420c0bf57e438df30ee18b5b5a7a29d290d9. 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/JPB452105756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52218e495244b964705274f72a512b8c52ff1bf90cae4d3895cb85c293477fd5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPB452005556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1545846f6fbd7b55c109e70cebca2e0c2250c115ab3f04b8fb3e0418334f3301. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPB452005557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e335e015925fc68cb77d693cba5092b365161e16560d72624462e3b015a1ad. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPB452205922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa665f270af7cbfd0d34b711b79e3fde1b867bc94a5cb3f21c10cdf4af24e9efa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPB452205923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0676db90786d1c0bf4e46bc279a51b0e59e145e3dd970f0652715dfc2af490fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:40:55Z), 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/JPB452205995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a1754eada8a2cac2baf25e35ec8979b097e72b5304d974525029c6d493e08. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:08:13Z), 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/JPB452205996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8581c9e3a95737d79497660a13e413fc77a8d2377a36968d34c2afdfb7b17aa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPB452206116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e0ddf3e559db188a51b967a98184079c74e2132f5cb52343c7765aa5ea55b0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPB452306222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0676db90786d1c0bf4e46bc279a51b0e59e145e3dd970f0652715dfc2af490fc. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPB452205995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172e07de6b8da6ee3a54431c719cf50b372fc0b3ccdc887600e600431d6f730. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPB452206113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dde77b949c3ccf8c149559c952bf8a10f5fecb5c7e3d641a1338e39ccf6873. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/JPB452306293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b100d2c7357984f9d0e6ec30fe2c3f74e796de180c6614ad3bf07ef2fc4d468. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPB452205994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d40e4345948996c80288b741bcd32f6d9bc5155364a1a9e507c6fbb367227. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPB452205993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9123a4d1cd80264c3ae5b46782a06363b3da869870a1bf51b774773c0bb7def. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPB452306294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524acacb6b76b7a4b0d1f0910d1aa6298b3108c007dc07739df8b3e96b468668. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPB452306295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f41118495db48bc15d8f86f2efc70ebc04a934944960db42b0df2f5b6afc4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPB452406415.