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 0xfc561ff17aeed3be1eadc9da3b9e0eeecec5244cb01912976d257f413eaf2ec1. 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/6041376f-08a4-4fd4-b623-2f89e71a2b3c.json and https://artists.proofprofile.net/proofs/artist/6041376f-08a4-4fd4-b623-2f89e71a2b3c.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 0x49c07dcd5896466d710f678ae9166bee1e68c65c7ea6fd185a1ab81577e39ae3. 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/DKEBA0704301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aadafc3d0d6ef3a086ecafc2c5b413aff069f540795f6a305048833b27200c9. 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/DKTF71200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef834e37c9c9cbe56e17ef6a2633fe6670d765783a3d44e2db3b87caf7a08f. 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/DKTF71300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341aeaa55ac257a43c36fd6694112ae385c8466587a8813e386bae4c00898003. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DKTF71300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75441ba007c452b1c0e1ee8f3c8bfe54e4ee79f57b75e603d66a313d8affd8c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/DKTF71600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f6e4fc810a5282d3b3aeb9ac1bf8440c9a4330561699763a97b0f330f1a103. 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/DKTF71600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf909a86da440e726a0beb6baeebdd3f489771e98ae3de8838404d0811f75acda. 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/DKTF71600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dd24ed7e7ef5c9696cbf22ea71a5bf8f9d5632a1a5bbc0c3ab2366c8b691f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DKTF71600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd230b1ae191b53e112e9e472f2ff070233e7b03c1a17410b59125721d2f25e3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:24Z), 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/DKTF71600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe6e4aa0bd9ca00ce36acd8c8487116744e99c44dfb8fb29f9105629372ce47. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DKTF71600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117956a990c448f57dbf7ef9c9a79eb58f056a3f6ddb94eae4fc1c7276233525. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DKTF71900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39657c074a40b8a8a48062a04c3b59338a5e089889fd304594f31a90bfc1b86f. 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/DKTF71900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47189fbfd9435e9c323d10410218d483529910a47f2adddf7bdf34a7e00c5827. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:33Z), 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/DKTF71900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffe37c8be6358ca144e96636b5f3783116f649450f1ca6e8b8ec187cefc0458. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DKTF71900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5898f2c8070433b0013783364aa637e92fa7e80db72ea1efecc5799fef6587c8. 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/DKTF72302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948cd280051ce2a7937106a326834a342859c62512d1fcdbfcfbd43e24c71142. 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/DKTF72302903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb2bb4c58044f7ec3733db697eb5780a8cea79a5c3d3fc65ae9d015bcd3347. 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/DKTF72302904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95dcf152e89e174467e9ac0a6a290b259e1c86407791aadc41f4e7b8c9fffb. 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/DKTF72302905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c584e33d7810bfdce6f09022c7486c9cd7ba2f17f1a2fae96a8661ec6246443. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DKTF72302906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78a87549916ed986bc23d4620a391b4e8c1658c18694df9146610f1517f2ba. 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/DKTF72302907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bc7dfabaa22189e16d3838e98fdb896287770377da02ebd8521924e75d861d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:11:34Z), 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/DKTF72302909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb96607d4c1678384e9b84547b0be36337a037f6deca7f395fa95e6b8491044. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:10:53Z), 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/DKTF71704201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c023ddc2ad9ad7b1a714c99ba63bb6d579caf1a0af900c12f05f2851e7adee. 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/DKTF71900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79648431331b6ec5fc0574abee87ab70a1dfcff23f64e33b03993c16914659a5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DKTF71900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a211a3f643ecc9082e261c48236e0b6aeb3557552cbbc6d056b7ce5d29bc35. 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/DKTF72303003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fecee2d7aaa88d966b71de9c38e39e8a3a4006c83c0244b657d235a8ce20b7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DKTF71900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89234215fe7ef7d87f945e9c0e1a6410a710ab0e889c024a127b3e1126093b5. 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/DKTF72500507.