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 0x0d3adddad8ff9bea55b8b9f7c7ca0d04a781a25526ef8443c16002b0cbaa1d57. 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/de7b397d-a26d-480c-9f9e-b03537e300ff.json and https://artists.proofprofile.net/proofs/artist/de7b397d-a26d-480c-9f9e-b03537e300ff.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 0x8578d1471c991afd3f55a3d49878a4098f4a651aa23681a1d9a5d5b123ef9265. 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/FR96X2151076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b72db26e77003f82540ed619b8199db198241e602240c4eb63513f2bcd1fdf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR96X2151070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559dba82865f6725da8667d6b4a2549d21bdcd7a712420f92b189a7d12c5f961. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1925707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f794b62ae17762be9a717df9e7ae52a9c80c5a1a77626bccd3d733818abcc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0M1912006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f794b62ae17762be9a717df9e7ae52a9c80c5a1a77626bccd3d733818abcc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA0M1912006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d588d81d961e66ee148c063451a0d7fcdaa2a9d29a4921a328154a7cbe104dd. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR96X2150648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7659ea32067e79ab392472eaec10c64884a57af83aae8c2f0444e4c10a832b1b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:14:04Z), 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/FR96X2150651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559dba82865f6725da8667d6b4a2549d21bdcd7a712420f92b189a7d12c5f961. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VNA0M1925707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33353a92c888e987ce06f51e64102c6bfc814c1973da930d0477e752eb4ee96e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA052244939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5e5dc929a13c63e042205d08fd2b0e2079bc281566a5f5ec3af1431194ce9. 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/DGA052244941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d7aa236fd97fd7996a7df4bff58aa65a509ea4282db31f8c0a7a854de9529. 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/DGA052244946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6467429e5a9ff8dd5dbef836a14c138d3452b4b9976cd2a752154c5ba1f6ffec. 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/DGA052244949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fdd068da9e3a46af81367e11ff47e3ba59a9e2cab6e9a0150c7be01dd3f499. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:54Z), 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/FRX282395525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd480a9b3d4c1f6277870f62022afd17f6e888e31e33efd4cfd558e5291b24bbb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X42476793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a1e01a3c2b3bb673959ea38b25f2a5d5ecbf535fb6cd28fb8aeaf63168170b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA0M1907516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77cbd37ff04bfec228cf481ee84caee8c19afca192908b85ee09838d4e8083. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S2243857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f383af3af1f33375f64553b4c5cbf3d8fb7bd0685dfb70e65c0a49d18a0f3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VNA0M1924975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa548ff694e4c0c93c5c6997d9d12fe6eea09bba63f9776d4a6d3931c3bb338. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA0M1907494.
Tháng 7 Của Anh - Live At Drunk On Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6f29f1c9bc962411adb964dbc7510a60d61ac60b2f2164675a80ee8c822877. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452219173.
Buồn Không Em / Nếu Em Ở Lại - Live At Drunk On Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bf1177092f1da7b1c5b548a9d23bd64107384175aa5009700aa3923eca12ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452219174.