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 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 0x0278bcf4ab02114fba1be7f1af73ed0ea71bf611a05a49bd3e204ed1a563a8ec. 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/8bee27ee-8acf-47f9-b0d3-84d619136878.json and https://artists.proofprofile.net/proofs/artist/8bee27ee-8acf-47f9-b0d3-84d619136878.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 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 0x030cc461b82f019289ba385205d4246fa90b069fa52140dbecbcd71b50e5449f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBMJG1806698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06bba62afcc3c2a53a99fd92364950a1e4a0cd0e1b1373280b0ba437d3378e8. 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/GBMJG1809871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8017476188cb51842f5a69349788b5096af1d59ac76fe68029d9013ebdb7092. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMJG1809872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537d20435680ebf8d50d990ec91ab26f2cfaa61c69f909746d0e124f737a278. 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/GBMJG1809876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdf1497bc692723470dc1a8e39322844fc7a35d1af9840b683ef357484f3597. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GBMJG1818640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab847953852b3b1cb3b07f9ccf9b4fcbc1a9bf79f616301089643b6bd421b3e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/GBMJG1818641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b32ecf8dcf53a6dc3b870cc42ba6f2dd2d510efe25b0a7f288b0b2c4850e24e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBMJG1818642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64f8f2e2864d243be13a30bd7377c4826e2821f84a77f07664eea7f765bc1e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBMJG1818643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b704e2b930827b8ab1be6aae55ec8a544aade83e48f5320c9a3b37b75e555. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBMJG1818644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b10190ef807a90ff43941c0dda2bdd9991040b1dd1019dbd284060067b3d1a5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBMJG1819751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccc597b4e34449731ae3a4e470ac09fd385f8d3740bfea948e86fec4f1b2e79. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GBMJG1819752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328421440df5c793ca67c32969ab11e38fb4e78d074bfdec1a259905c6c42fd7. 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/GBMJG1819754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6394a3e5a763cdd402dd32a16535ccafc1bc09e8de705ecd7129b7cecc85685. 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/GBMJG1910531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053d568185c8c37192316012c314085c607307ffa3645ee7daa7f651525f51b. 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/GBMJG1910535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37344d96f46c8037a352c42b536d6c8e90352ed616445c6a1afa1958b7fe0f66. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBMJG1910536.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b83459a451b1937394bbfda347a6eb0dd087118f77f9afc3577daf4bb0be4a. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/GBMJG1910537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b7eb126eba40f2ff3083d92c00990c9a11321f5c105fde46896e3f6df8fb99. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBMJG1922671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027d4cf256bfbda957173672b318b1365deea7211bc2c995a25b1dcbc26c14d5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GBMJG2005101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982666658233102c3c379876404293473c44973015c626d8ef1857e8f5844df. 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/GBMJG2005103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963ed401871c4c60cc50b89cf98b3a50d0ddd5e3512703b2b9c9462ceac8054f. 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/GBMJG2005106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c39a37da937b965572c575af8253fd18b5a091efd5becb17124ec6d524096. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBMJG2005107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecbbf7182f7141186a6bb7381a88b652dc5c0013931d5c4f11a54df26ceb9ad. 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/GBMJG2005108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942350d3f223f180a7b57cd154ea71dc7fa67c50596004861e66614bd135abeb. 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/GBMJG2118361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af3ef462ea6cf649bac1a23cc06bb506b36447f4d4922f2b05e7bc177a8249c. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZMEQ2222110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493e3025aa25c1acdaba4d541dc0341526d5d82c6e78c6baf58af17b94927a2. 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/QZMEQ2222111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8415ba43c8fbe00e8d580c74a047b7ac2020760d8708ac1ec377706a22d7fd. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZMEQ2222115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca41a6b015d7d04080d0f00bfecfd80114f1fd8ee561c7b553cb04ec3e505781. 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/QZMEQ2222116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f89615ef25d68b9eaeca1ce353fa6b17d9861d3f717e33c2e4103cb6fdf59d. 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/QZMEQ2222117.