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 0x91be19ae84e0e00505f1d9f5c4d7a43d0fc2a8f87e55fdab837ad08e7a8658c4. Chain 2 (Bitcoin): anchored in block 954081 (2026-06-17T10:15:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ae5977b-1ed9-4c9b-8bdc-d8c019ffa079.json and https://artists.proofprofile.net/proofs/artist/7ae5977b-1ed9-4c9b-8bdc-d8c019ffa079.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 0x01942c586dd3978dcbe15589fe422fb6b35a74ea28b2362ed93f54298043ebdb. 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/MYMT20700045.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452c4bf543320821a57cf42520f889b0d655c2a802a8aa88fa36fd00505e867c. 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/MYMT20700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13938a5b7df7ab073ec1be9d73e255d8c835e0303bf44fe822c7286fa22a64. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/MYMT11000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebbbc6165a050235e07ac519d1b69a89c51171c91b491985c54a176c1ce83d2. 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/MYMT11000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c512661518b9a920120210ee75e472aef645393e96ecb5843cda72f6d60182. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/MYMT17702702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73036f82aab9d9c921bf1a9264838f630980b6b7500d9c59f36aa34f83169e1. 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/MYMT17702703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe121bd693ac069159224ff6ff581857f88653fa2a1a0ec5a6e60c7bce755b7d3. 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/MYMT17702706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4669e93012842bc9815107132271853eedfb2eb78b8a346909a0bf093847a20e. 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/MYMT17702708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb452ceac8924b21673d3504ee71cb0a134cab16ae94d0dc16628dcc0ce5af16d. 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/MYMT17702711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8410c4e82b0698c965ec8da2b48fb8eb273baece5908f7488074add6e28df9a6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYMT17702715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4272b6a4f60e4f3f4dcd03540388b21d7a06abb584b87aec1b9975aa9b11bd57. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/MYMT17702705.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d720310142cf26d9694c7add04aeed4b016515f99570beff04d7c0e271bfd8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/MYMT17702707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1ca29559e363e0dd510d4fd39c8b5036a330c51b8b1843475fbdd3a05e89cb. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/MYMT17702710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92642bb1a088d23ce2a2a40681373cfe1abfa32bbd3c6ad600f9cef82425be65. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MYMT17702714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c24ce6f48fffe709ccd2c8ba2893e14b7506a4fe833e44f4a96cb57d98ce9ea. 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/MYMT22700220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200dc27ff1d97d6be17b096fe66fcc8466225fe5cf332fc61a4d5001d5fe2ac5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:22:24Z), 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/MYMT17702591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66e53fe20658fcf073d22408edcda7b9d4825e279826941c0bd35b3585fefe4. 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/MYMT17702592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4c53574dda25b2c677e5b3097efc0dc7da523532160b9542d886c1efafa60. 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/MYMT17702594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3aa1683c1f533ac2fad0c606f7ed816216e7333d8ff297ec8ef42f4f68f15. 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/MYMT17702595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e050c442c13ba1df795794dbef53a08a9c7b01900adc72a734eb5c0b52b75bb. 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/MYMT17702597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11fadf5be1dea7020ba9de9af47c04969ffa7859b5edeecebdb638a4a2fdd35. 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/MYMT17702598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15b24c45cf979002bf6706f1bddf9f57cec1b071c40b581b7f2b47f53e71300. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/MYMT17702585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a795b45a72e5dff2fed36663d8b89667ace6b9e127c4fc0b770375733029e5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/MYMT17702586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9469026d74eb08f24b8a45bb953f02824e60ce6e33d8a8dbd813b5f4cf918b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/MYMT17702588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb17bbb7def5a73cb20e26d70ffc289c6f34bf0768e363479a028f2f45110f8a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MYMT17702589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d38427b1e0c1cecef16d03bc6eb1eebb3a9e0bbf843cf9f3c5a3f101d9b5518. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/MYMT17702590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e7aac5accdece975656bdf5257060e5ebda73a5c77eeb438745808750f4dc3. 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/MYCC11611040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dd049ef22710b40044c548f0190f268de997fdfacbb9bdc55980a898e29217. 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/MYMT20700076.