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 0x9d8239fafcb6011e975670d334cb9cdecf26d0a49b4048e03c8d6949de7e287d. 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/d757b8fc-b51d-4646-8bed-9009e2ba8f98.json and https://artists.proofprofile.net/proofs/artist/d757b8fc-b51d-4646-8bed-9009e2ba8f98.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 0xfeddacb3bf5fa42d8d2f3a75dc830abfb93d19370f2be65c02468ddaac521d84. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:05:05Z), 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/QZHN72206072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f478f9a71c87de857639af06fe37800e2c2feed1ac3722cfa7d25190a98bc62. 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/QZHN72206074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f5ba76e0d66f1051a4322b7189b66c7252321d82be72066054a568b6520ff8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:16:44Z), 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/QZHN72206075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c964317b383ed1135351d5009b6aec5fccf7dcaeada2cfd4c892eb2d41cfd4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:38Z), 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/QZHN72206076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b51cad5f874d718592fcc26c4ee94461403bf0835fe2b71ed0ea927e1c9b37. 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/QZHN72206078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c9c85dc5a960844edae1dd5f08ce56e8b7495171615e1ed809671f0786f42. 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/QZHN72212666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e0707448902b60c89d6e579f247588d12f65fac7f4b5d9109a7f2efdbedd3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZHN82222576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78a351d6d95d42f50789f324a7421a1b374e45afcba591110df3ae700e6cbd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:44Z), 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/QZHN82222577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b187ce0ca8f332209d4c0e8c52a9a277fb4a50dcc0eabfbb7779427e7fe49ff. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:04Z), 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/QZHN82222580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99e0707448902b60c89d6e579f247588d12f65fac7f4b5d9109a7f2efdbedd3. 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/QZHN82222576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b78a351d6d95d42f50789f324a7421a1b374e45afcba591110df3ae700e6cbd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN82222577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b187ce0ca8f332209d4c0e8c52a9a277fb4a50dcc0eabfbb7779427e7fe49ff. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:08:08Z), 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/QZHN82222580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729a6af39ba3293f38e8a1266c6acf811f532e787b30a4bc49c1bba10e5f12cb. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZHN82222585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4189dcb37039a4eeadf6e86f434d38c8f192e0e07a5a191eb55dc9def6234b. 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/QZHN82263799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45a94b3128ff9bd199a1591e6323884f6661f182541d787f8da4c7c0b81aa84. 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/QZHN82263802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f69bef69c1d3e8d9da86939ec2fdacb4ec9a488f32890961118fc5a246d407. 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/QZHN82263803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8cb1c1e696882deba792ef0c327dee147d47b9de07dc6cf0d62fe943919021. 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/QZHN82263806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02d578bc98f5979ed4876fd8c7f1f8bdb9300e6890df8e2a9cc6e99b99c3896. 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/QZHN82263807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c25ba90361ebba4f38cb9a43ac1d6741b63a5f6b53f16220c70253e5040ce27. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZHN82263810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86652e835caaf39070b66d7db7150ef3558a5ebfe4593f8dd24b680e3fcc0565. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN72203182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1417fa19fe9e2875b188966374b798f3278f3a2132643a3c6340cf7c73f257e4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:07Z), 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/QZTB22278760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb1e2460cb4059954af0c74b69326279327bdaec65bc3cc9758f40371c8efcd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTB22278761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc288df2c2b4e9e9be4dbdd6d97684c87483c590a38592fb0a5a48440e5fcfa69. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:28:21Z), 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/QZTB22278766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dff1214d925a7710e39de3f5c14ef7465c15eb0b02f1d354c9c9eef621769fe. 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/QZTB22278768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245495630e1cb0dd5b99dd7faa432165737c3f98f3a70b2299fad3596da55075. 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/QZDA52361786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76b0f076305860de6b234e0c3e5dea228258a18f9121a90a47c044a4de4069. 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/QZES92374734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e907d02af3fe07ac8db8a0843d2504d9a4bb90204de22b1334a1406bea481c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6K2427487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5458acbd1a7e58ef73045282229616f39c4421d725e8e51c2c6e66685f84c0. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6K2427491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627be74bf47257bc48e1bbccbb26c054b742824976c9fefac7b745708884fa0a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:18Z), 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/QZK6K2427492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25c340f497375ea9bc0d70f7192fbdf7402f012673add06468414de11ea022. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZK6K2427493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f710e7f7042b2ddb23e4dfa6b35e655871dce03655ef5be39516aacf07b28. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZK6K2427496.
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