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 0x6b6a2a41e74b6491b81368b2140acd821da586732589a0779cd866e2359d682d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dd0cd6c-3350-4dcd-86a0-556bdac94ed3.json and https://artists.proofprofile.net/proofs/artist/1dd0cd6c-3350-4dcd-86a0-556bdac94ed3.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 0xfeb2853519ce9531828d9df400d125c73b52fd5df5014e3cc837a3e67b1f0516. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEPI82442122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d50530890d1de3158072b6e7517b4149702ad883877d19078cf9a99987d292. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82442139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d99d80ee2e8c2e3e6690d8de3805c0c3f1907d7df594e46a6281e65aa0f4dc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82442121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c5383a5b5e6caa22daae31cd19b415759febba32914ae4163b1f2452407448. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEPI82441738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92540b778cd709fe9292dc92ca24c02a8e56209970bb1fdc3fed2a3d5da6ecee. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEPI82442137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d921a897118b426e059457487ed3a0da105a25069c6533e81f2677fec9a1aec. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:09Z), 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/DEPI82442221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bc317bcbff479c9da37e802144eeab0132d48c138977b3b5169df132fd240f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEPI82442220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74812d17712e35ca4a16f932b28624e9cad3fc8d2b5b1e1fb207417d74555c31. 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/DEPI82447535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2311c0d965c9814536502d0af954197bb4b4d600eae0a7a9f9cb34d0120162a2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEPI82447530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20a9c8ecbcea332890c735ad431eb739abe5927f4ddc8dbcebc09190e91aae. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82447529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0baabf8dde4d1eb50890aa04b57ca3a336b7ed53510ac140cb54530acfc053. 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/DEPI82447532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e29a01d6910498b57035813f80931da1fb644828e957cefd81247ba9cf1411. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEPI82447527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c39469c55f9e9d8e852eb7870bba437ca463276304147a072e40e79d9b1504. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEPI82447571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa424c15da8d5e241a64f94cad3f6ee4af58c24edbc6d8872363fd41a8697c7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEPI82447572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2febf015742d426241cf28a73623e9495a5721d75731d13fc8241e28c574af. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:18:32Z), 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/DEPI82447569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949d027609e0e69e5673a29c7381fffb2b7076d1b2d5580264381ae5f720f270. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:07Z), 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/DEPI82447573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc09ea5e1150143b5271d234cc947cc3a31b10d7dea686df6c2f5239ef5f393. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:23Z), 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/DEPI82447570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5064778b4e2036cf91d67bc0823bd3a964e3b712c44a04350154f2364a8e949a. 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/DEPI82447724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96048ceb5b9aa67990d7f5b04730b98afc551ff94097d227f70b5858d5cc778f. 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/DEPI82447721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7527b6bb92c4ee0dc9c27349e06d1d0aedac4dd5c2c9a2bbb3bf18460a691ad. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEPI82447739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe61ec0b7abd2c687b89c18ad40a87f14eea8a7c7b6ccaf6c5e7b7013393341. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEPI82447740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe524a0e8b650c3802b42e3defd0d9ac0c9071626b94578f9bfc7b646c684bb92. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82447734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d43cd0066917330a2916ff25714719f254e6287c2799953aeff042b32706ebb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEPI82447736.