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 0x4a20ccbd1c9f3575a20d0092922048288ac74739e1e5bbd65725bc66599dccab. 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/00f35c16-e5e6-47f9-9856-4165635d133e.json and https://artists.proofprofile.net/proofs/artist/00f35c16-e5e6-47f9-9856-4165635d133e.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 0x67998148017a5dc6de5a432fd23ace5bb284555704eb1180de8f6afb46a2cafd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MMA031903493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccd84770cb66deaaf95b62fac9b44714ab785d58341ab9d828f5bbbbb0b3077. 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/MMA031903495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8460346b3abb33f78e66a395b24c742a5f1e0c5c7f73c9c614012c329f7358. 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/MMA031903503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e74bb788882c1e5bddf6bd22ffa88d5d2e334336a9d65f53789606596271b9. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:53:30Z), 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/MMA031903505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a77475c4b7b13dcdd535a7551a1476477aab4957f657e8580a707494912be1. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/MMA031903506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66493998679804c4670ec8d4920969d2c21bcd5a0f0502583e4b87971c8fbd87. 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/MMA031903459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f5c6d778ad94f7727d67237d81dd93f9208fad682d28d9119fcb7afba51d10. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MMA031903460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c864de9ef566ff9665a42f26a1e111ebe1c4543ba65865e66d3969a635a73c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MMA031903462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd915b294333609a1c121cdf4c56a7de0f6b782c8dd0c86271b3833136c016d1. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/MMA031903479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e68887142e63665be9a89c0ab0204923cba2fdcadaac01cf9487b8b2f918f4. 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/MMA031903354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741c88f6fc150bbffbc0590bb63151ab4b029a720386879e6a050d5185e8ff12. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:19Z), 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/MMA031903357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b0a264148c044382bd7c9a9a16985a9684c30c2a88b9a5365a660fd9056a70. 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/MMA031903361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa2bbd84ea233472cdca02043eac11bca6fab76834f3be089edbba1bb0b9dca. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:00Z), 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/MMA031903334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b992e464c975a9d5632eb6922a942be832f02621c70a4e976e5895e60e1e218. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MMA031903384.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5065358e572abef3926fa02cb75ab83ed64a53578ad6392b958df2246c1f2618. 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/MMA031903429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12941ad87b03f5826b2ac3a0f45e2ebb768617c016c939a9d322a1488698fc2c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:49Z), 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/MMA031903430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabddf8384ef10d8acf69b860595ff1aadbc21d512cd1b36b8d16a5d2e481ae9a. 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/MMA031903436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa374100505747d1a42e907d72820d994d167c2a1870b49b0421e611a4f8bfd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/MMA031903437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d13c296cb0cd881f20e70072f99744f6ef78838c824ba5ab049d81e09ec1807. 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/MMA031903438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4197f2648bbaecd91451eb65c45f44ed36e05fbe212a2a6d82586a270e6e247. 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/MMA031903439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46d55cb536e7cbaf1f90b700008b6f91cfb26ccfaa6e31e8a6adfac10adfb6. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/MMA031903448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55c4f2aca943b66d5f14ac2b91748861a78588bb0721ad73ac65daa862fd2fb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:02Z), 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/MMA031903377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522841600e53def00d1b8fc9f1982d4b2e20fccfeaaa690c098519dd71bda174. 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/MMA031903378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe334015176ceddf3400d8cc115f4ee80379fd2854d608d9b855b6f50d07224c9. 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/MMA031903346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeb97a1b28d13f3e69dd481be5e84d5e799138f4dde9d47ff064ca532256a36. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:24:43Z), 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/MMA031903349.