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 0x4b660b30b3ee026917ea36695237aacf940aa24a4741c9f7c5186edc06ecf386. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/badcb025-e240-4a51-a844-e39361d3f1c1.json and https://artists.proofprofile.net/proofs/artist/badcb025-e240-4a51-a844-e39361d3f1c1.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 0xe75262bfe17a5749e0bc43c98897cb07deda0a2c6c57c2d8c4820739f4e8a091. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:50:45Z), 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/QZGLS2371478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65020cf5d5aa834bae3166e62d535af03478d617a4e519f7efc9d2186ff6b441. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:35Z), 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/QZGLS2371479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98d692cfcafac6d7b944de9011d9adf749a24cd0995697dd2c2d8c4b1177a46. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZGLS2371480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc6f900d78ef3e967814cd3780596c5bbf6f56a835c29c67d7f56c55db287d9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZGLS2371481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dea85941e2eed6c92b17220e5cb74531a6c7c33a9551d373e35f8ad2a8d41e8. 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/QZGLS2371482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec73421025a01c507abedb59c2dfc7c10ab09802f8180b3f5cb2e720a01e0d5. 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/QZGLS2371483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35032867c76033744c9ffbe3610e27811fe6c9db4bcda5cefefeee60c119ad5a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:09:12Z), 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/QZGLS2371484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17de8c12a68267c3a2789b88039e929a869227a25fea94d107b1352d8a723e4. 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/QZGLS2371485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ef705e8edc451dcc9dc1b28abd7c733c1cb714dab4388a3d0d4c4412f2fa65. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:52:47Z), 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/QZGLS2371486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e90c7cf6b45a1327b3ac221bf80253dbdbbb9ef83ac678d3ad9ff4badf4cdb. 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/QZGLS2371487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5b7e8edfb9b01150f2d2475d7d0760ed122d59016fac2bc45b3a9ff6ac9e3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:44:29Z), 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/QZGLS2371488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15496dad1ad364c34dd179390fc969537c2a154b40a6aa4d1d3e86f1aa9d9271. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:39:05Z), 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/QZGLS2371489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa3c0eff738beb3608618bfc8eb2a3d5f7ea6f9ac78f2eded86194c8250287. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZGLS2371490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb4237a8a5e2ecf2b7f5c47a54a16a42d03483c6bf62fc4c79016d1e488f5db. 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/QZGLS2371491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6e781a037ad5458306b1dce8e627aa0cf5f4ee961f262146622a74631aee36. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGLS2371492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93baa876498466a46f2cc9991c15874fd765d643c615fe8c339fc7c907fd163. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZGLS2371493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eb7358592184b53bdc0b48a10ebdb0cc4ae765d9bc170433fa3c32f00f2ddc. 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/QZGLS2371494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603eac829cecebc8726add2628e17e9770b3f62e1466a70180f6bdb96042d3fe. 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/QZGLS2371495.