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 0xc770051f96d09fc98e841f3b0c9857c02bf37e2408a967703a173cf478b2c2c9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e79a0669-deec-4639-815a-eb5805387d6c.json and https://artists.proofprofile.net/proofs/artist/e79a0669-deec-4639-815a-eb5805387d6c.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 0x2e41bff4208c2fb2a9edb01412b64283bd034a6604577d43bbaf372ff8df38a9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:14:46Z), 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/GB8HK1302542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6487179898cde4fd594d7a5400c282b688d791477f25df6cfc3baeb0f0361c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GB8HK1302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca95a321af21b79d31bd28c1a12a5cab478d4c5058918d5a499a35e122bebd1e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GB8HK1302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d57fe79287368fce37efcefe2bbd5e59e39cf963a7aace237535c4584b66222. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:25:50Z), 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/GB8HK1405001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5a22fba94ac87924ee2c4845dbadfe9597055cc4236b1c04d78c373c7e87d7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:39Z), 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/GB8HK1405002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c09a18d5d1b7d2fea1e37f4f6ed7a4521278039da46bd42b8e8b78c1bb107a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:04:00Z), 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/GB8HK1405003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d14c0e0933d324dd21adef75279069cfb900859a0641a4480c865034fa46e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:53:15Z), 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/GB8HK1405004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33397c38585b84b82a959ca423c95b4942d11758c7703fd95d17f2b279df84d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8HK1405005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c97bb1bdc80618502bed39de2d696ef1041ccb24e6df8c0f85d5ffd9760ae44. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GB8HK1405010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2bba09896eef427a145bb354bcf3ae2c956f9d964953f0153cba122ad8c024. 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/GB8HK1607141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0769edcfe3220fefaeaaf6ab6dd3c2341558ed5288a2608e46ac5f8ab6cf2cc0. 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/GB8HK1607142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db8322e767e5ae286005f0614b2e4bbd4f465b2a85e7bd2f3b397562936f646. 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/GB8HK1607143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a37fa192b1eda4a62a20213ac312802e3d294cf4d4acdb140f81936772d748e. 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/GB8HK1607144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3c7b7db5f0f431cfad94b8f0d33ab002dc86c7d937ab66130f8d14b5951022. 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/GB8HK1607145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86909ed1fc8a05cacee03e55291692b2355a1b9e96e7f118086d388a7763124e. 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/GB8HK1607146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0927946b1fa288a85b9a6ee4e230ba05bedd600dd931d665a0c5c54492f36f. 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/GB8HK1607147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e3368d9924faf8cfd23db3266ac93a8df64475c48db166a2e7511b1e5db74. 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/GB8HK1607148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dfb152480ac0ae56486efa281bd78435c62d3a02efd6663ab7add17e2250ad. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:41Z), 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/ES35G1200462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7f827dfca4dfdd0cf11fd1a7a0c8709a906557561f18fdde31c8babd9f84c0. 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/ES09S1900440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be1a3e87cfaa53e7385e1f221a3ab5114a2bf6cb70c111d2a41af633e1119ff. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES09S1900443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188926d158bc2b4bbd3b8255cb18357fc8b0efc342c4fa95888f50cc8c5b6574. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:53:48Z), 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/ES09S1900444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f7964714382f069d24b014a6fda357a72d148ba4f9850373aae9906e77fd3c. 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/CH6542044760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7802174b0257dd6fe570405ed743763f7cd220b3ef3e6b2e1011c965266dc. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:03Z), 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/CH6542072707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b41f0e1e99ceb4ed2714e331639d97931365675c709863d745b5d84acac16f7. 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/ES17D1700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb09a3a53d719f85cb7ec60edeafa864e9de1b6f4c36ff406b6d9b51420fcbae. 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/ESA012557371.