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 0xb32467e84db1bc27bb640d5ab58a6f552fab4631c9757d61bf132cae6b45c736. 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/77caacd0-f1bf-4504-b9cc-a16faf769abd.json and https://artists.proofprofile.net/proofs/artist/77caacd0-f1bf-4504-b9cc-a16faf769abd.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 0xf9af23b3e65cd8a64e2a74a6dccf93e272c1e37d7db418e25578e3d5fcd649d9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEZC62107431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528529801ce17805c41379e14407f36168046ad18edc7a11e727bc329397467a. 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/DEZC62107432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544ed73b49df8be442b95b5ac589526840319cb98dd037791176efa5b5de7404. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEZC62107433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6a3e91d877ec988f9cad54e21babf23577c1fe63802fd6558bffbfbf8e05c4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:23Z), 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/DEZC62258635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a6073f8a57819a091b2ba21f9f1ef9b5ce14aca387e1c962ee6ea545d30307. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:38Z), 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/DEZC62262944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41740ae33e1efc89cbead9fec4fbf8b93ef6be543f538b7964f52eb51ee9117. 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/DEZC62281645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c105c25f677c8dd84c62a22bf442f1629241b8d5a70f91610049f90b8f337a. 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/DEZC62210425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84069560b87adf6aac72ad8df336c55d7f5162332abc4610e32d6b018d77b717. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEZC62210427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aff4fc23cae24073eb0f110409ded1ead070f220b49f36a0708b2d5ba0cb1d9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEZC62210428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f41377399894a545866d8be3ce7d1363d99046408c16dc76d0bff0fe75784b. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEZC62334003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa79c61026d0918b630a778b3e67ccb02d9264c989c83c736e94c2697aeffd4. 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/DEZC62338501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097b67054ea067e2388145557b71e38b2f80426c9c10fa8e4262f4284cf337c6. 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/DEZC62340480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59231691a0d2e4909eb22c9bef8ddeb7ed91286e1ecf58b04b1c8bc831720831. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:57:27Z), 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/DEZC62340484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fbe17e44bf118c6f42498102d283bbf33f5c0a0859a42cf57ae5e587da71fc. 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/DEZC62354525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a6c565829cd38a6ed8dcc39368ffd779ea97a50b8f36cc1c01a69bef5af1f1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZC62357945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0906cd8ae59e7809943773c87cbf94fde89a8814564c8e367075746f8bb9a3. 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/DEZC62357947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5df266f8405cd090fc7fde727782faa0493fecd62ad844c5687809e9c1bb8b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62357948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9737e6e6911f4e4f0107a40723a4602f3c8bf13b99b634075884e42ababc0. 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/DEZC62385963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90cf79fbed18b5e7026e4093f1b2b8bf8f55b81863941c1f99c999763b13558. 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/DEZC62415566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57775db0bd2b17ed7b8bb113c0ca908b7002310957b551301dc5db1ea52c08ba. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:40Z), 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/DEZC62415567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e5d3f63594ce45f5cc5fcf757a9cc2189148c06b0f6d99d2a40a8ba84eaba9. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEZC62415568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9a8291a90f6e7e9c17a70684ef4039a603a862cfa94a661a499a0346ef43a2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62415569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefd8046d70b3575c2f3ec8c4392cc8fdcc67b1fbfe4f423b23a588d6f5e354d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DEZC62415571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4ffccbbc4d076ca8a5e6d3af97b220153c4db20dbd2a847ebc8e4a57e2060. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEZC62446598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69022277d25f353a7a05476ddfbc429c96ecf698f6871fa20376248f1ff0221c. 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/DEZC62453332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861caaf047b5f4d6aac1b94947ad9a31075f2b9f6751af9e71ed4d10fb940d8. 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/DEZC62457211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0608eef1bd4d7b16d919cf50e164ac7305dd3d954e0f169a9540c0ad52c373. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZC62460779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9331421508a1d7838cd508f4e8f9a7f27da8ba38736161a5f03060632c110ece. 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/DEZC62463673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb591836a6190300d8cff6d916eb858090c1aaea8a331a1efb0fb9f9c9487be. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZC62463675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d1252b400dcdc9cace94ee82fd1ab82362f18d491b5abb5dee01db63d2abb1. 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/DEZC62463679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba2bd1ff0bfc34628a6b5a9ab4a40fa0180019d4b37a38f3528adcad83bbc1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEZC62504728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e71fc0ae064f62c5fab9539d347b326235bb3f9f50846de4853f2e32d8f372. 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/DEZC62513142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ac41758aac5da48849cbb83904397582c2fdadd6d3927d9a16f2c4cbe35a60. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZC62513143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b293ce5498b4fc6180570d0acf11b06a45b4a82671be4fd4aea7a0365c6578d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZC62513144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba2bd1ff0bfc34628a6b5a9ab4a40fa0180019d4b37a38f3528adcad83bbc1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZC62504728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2e6de2baf16ea78dfc3127e8404504f990d70dbb66047d9ec5267400dff3ce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZC62513145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc462b9132a579e31767b14f5b38060f150b3f73f99be0b0d4475d64d1882f28. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZC62510936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45613d8f80e14fe3c3ed22f138722cdeeddc6da62f3c70668a6fbbd3ba97f011. 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/DEZC62513146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5265568a3c8000ec1fbfd4084caf6fe43cda30cbf45bc9ca0d7590d62607f847. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEZC62508542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca0aec66e9c1a370a811c8e49c7aba4964faf20e7f74a57e1f74089feb24c8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:22:42Z), 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/DEZC62513147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fec64a04801d3a58aa29988bccff077ec48aa7b8f80b7cd96bbb37f10186fa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZC62513148.