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 0xac5733611abcf6086d748c4cbf94f31fe4f1709b4a60fc6685e1996419a505b2. 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/a08b7ba8-5844-42f6-82c4-0db0e33ec80a.json and https://artists.proofprofile.net/proofs/artist/a08b7ba8-5844-42f6-82c4-0db0e33ec80a.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 0x13ba6b2480eef66dc0164adb2c46b28631c616aed56fbd92cea45de7f99d82de. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QMBZ92036304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06f339071d3dee836e1231a27ae9865393dfc207f809ee06a6006d3da98b3fa. 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/QMBZ92036305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19adb0e953c2a5e4441f1c1a0916e4c7113fb69b6c7f82b2d4364271690aeac. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:33:47Z), 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/QMBZ92036308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3109cec1ac9b61439f8b968d4942d6583c0adeae6529d6364f77de2896ab3e0a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:02Z), 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/QMBZ92036310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd43962731c81307d02b3ca46ea9ee281cbf437cecf0247f895eba092cca8214. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:35:17Z), 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/QM6N22196284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1d3f74cad43379d68a2cea7aad300571f8d795faf0ac258c8ea3039bdf465. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:35:50Z), 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/QMDA72256745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58ca442a47e0084f2ffa1bff36e37fe0b8ac501bb042f3656dbbe32160e4519. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA71594472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb0580764b5578c262ef332fdcd6ed3f15c8861e83da8983de93c37310a31c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA71594473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c00dce6678d7b7d4714e6cf244a08fbe4047c332b79e3ead1e3d66ad9845c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMDA71594475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ab0d6fe286b01efaa92bb041aab843d93788596a3c940dc26cd72bfa47200. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:31Z), 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/QMDA71594476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f7c677fa7f0a22f4bc3a23eb64d392e03ec6689a836a0bc57333fcb8dc7db. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:12Z), 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/QMDA71594477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6434e43a38d23a348eae92732308b54bea935e322edcee881f6ebf4ccccadcc2. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/QMDA71594478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db19074c11de9ed18692269c73e28248617caf99bf171d1d745a0b2006b90bf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA71594482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ec3c0957bddd7a42a9b61b979abb5a6d1a0a6eeb53b8baadd9f5bb97ebbd9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMDA71594483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2f5df1a7a8418c27359cd219301974d2d8482dc01133920dc54ca0faa7b034. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMDA71594490.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab7009490c467d8d587ebb810a374e5a5e66cb42d7fb3a1f0a0c0b99de3b67a. 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/QMDA71594497.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d0a7377bc58868e76aaaf2cfc7b32faf9f8a15c3ee9d7b6da73511206a8bab. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:13Z), 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/QMDA71594498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfdde2a08e6452bd408de53a19304a35b63e13d00c1873a179a25ec477f1ae7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:07:56Z), 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/QMDA71594503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41b70fc9589481d19c4574651237219b332807d1b9e6a7cfc7e3adfba880ba. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:28Z), 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/US6R21521655.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899c4d40b637fc50665b5fc238d58076185cfd00eb65dcfe1bf4a6ad9f682a8. 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/QMDA71567127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ccdccac04d6e2610b75a4831d1e00f0d1eaf2c7487d44d1f6d85d80af4b451. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMDA71567143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc3c98111b26d4ddc9a4b07aa57cd4cfc08529885095b1dd68cd049c68cd05. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA71567144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e268085cceebfbd26ea70924f4264cae62f43068a9808f65dfc6399f7040b8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA71567145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf12980988dc551f1f0a8900f35b7b7152b27a611cc89bb942acff76eed2cb. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:21:19Z), 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/QMDA71567129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3660b3e0478f1dd3806cfc81f5d280f91916ccc2f914a3c28d0c2c066bd829ed. 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/QMDA71567131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c5366a95ce657a88aa433c71a28c631576b7f2cb0c1bea504efab924a8094a. 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/QMDA71567149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7d7151c1d5660178726280fce09a13509f2dd49c31cd3a30123f725825325. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA71567133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc65773d0ce6dc9dfa55cf354dbab2d614b1c64192987ca8bee5718406cd5b1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:41:51Z), 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/QMDA71567134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6829f32c0d6b2f903069ca52977a26e1a0fca07e37e8caf908022cc97364b5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:52Z), 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/QMDA71567135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ca209eb53813bf732d13ea32b52e15f2781bc70d97d265c48e4900a77947ba. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA71567136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa230a623edbd1e1835e33798b342f6792482ba56500bb5cb01ae381f9adce775. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QMDA71567139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10a5037f5e3ed03456d9a9ba9705949168e0c45e5c7031e4105350aca25636. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMDA71567142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537bc4aa1bcf98133ce7d954c0d375eb53e3cbf8029f6da437ef34d9dd41f8af. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM4TW1601939.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81cd00216146db041cb67773eaa0fa411364e03ed8f1fcc7d2d12d42db136f4. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:15Z), 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/QMDA71594208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e09412789f80d91f91a75f96d5a81a8a9aaa4cf9413d8f9fd2eb66734c949. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:25Z), 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/QMDA71594212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7065ae3c137120a31764913fc3ab8817144bda704fa4654b77a860968772855. 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/GRLE10802682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf334cb3cf7dd97bdf380396514f7197f57704b08900ff650eac6389e139a2e80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRM011100283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26698911155c3685b7212da62149260e342babbd1116c3b4a63c7a25f1ea8222. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA062343063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8320d006ef4b76d4163cfd0840ffff3e4901ae76d438ac960bde88c0174564. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRMEM2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b313be8b024f3e0d6d45113f410b4673ebf9617b29b9f56f4251baa2a35c6. 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/GRMEM2102003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bfb8fc1b91b76a1f91d4baaf1311fa5ba27db59f6db14a39a556434b77208b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GRMEM2101971.