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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2aa0a71eb8adfc8403c1cf46cf2b4c77158e2dbbb09a89ce298fb46e2961c78. 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/ca741480-4ee2-4168-a26f-86207d6bfafd.json and https://artists.proofprofile.net/proofs/artist/ca741480-4ee2-4168-a26f-86207d6bfafd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aytee vs. Winin HR VBT 2015 Achtelfinale (feat. Vocal)
Aytee vs. Winin HR VBT 2015 Achtelfinale
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cf8f85ac8b086a2efb5909eafebacc0857cb1da76d86d11d40aa0b94bd6d1e. 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/DELJ81596993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c56875e0ffddefdb64a715a2f2dc47ed48cdece9e79abbf53114de26c7fde. 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/DELJ81520101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c4733c41300bfcb4c6a7eefc608f552c64d165ef3a7cb8dc50a3ff8c0ae37b. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/DELJ81607333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fed3aedc6847a2493f1885c2dc1b196baffbc9d91c1740f4f982e22f725829. 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/DELJ81615112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977bfdf521374b3a2713c56af4c84110b2a1a72bebcdb5cc39ce168a0f2a2e38. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/SE3OH1728305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c4df445be693600cc47ffc2d03812e3847dbc0af6d0ae2f4a5050faf7dc110. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEQ121749658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd458c52b8b2248eed904299548ca1cd1d9ee623037c4a346e082508398414. 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/DEQ121749659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec63e5dd1ccc8796c41036dd1766e7b3bbfa53ba81a89cd15968f7fbb2891e. 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/DEQ121749660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608817eec58c53ebec43e6a7754fc6645319dcd4ee53a2c1a43d5566b7e94903. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DEQ121749664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a3be400fa610b72d4d92446013aeeb10fd85f4dad41d0fc831a5308c79e7fa. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEQ121749665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a724e51f7d23a41d85180ac3efdaf9443f27ebd57e47bfcaa24595a98c00c. 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/DEQ121749667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10e430168d86ceb68c905c9f70b68fdea1581ddcbef33c32a87a56e36e698fc. 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/DEQ121749668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c3ebb65fb1cbaf048f31e2d4bf62c0feed73728218c81c1802ef0fab8f1012. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DELJ82013465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cba020389d366cd64ea7c8981ec613d80a6f2906cf54ad95acaff9d10207d. 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/DELJ82023426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9915b9139cda5fecf83590b0fe930296d600cbaa531489849f3901b3430aa8. 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/NL4NL2204685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70059d2c7ee4b9b48d8c80e51828c6ec50aec2a9ccd06bbcfe633847b8bbad36. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEZC62290400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2962aaa0077be66f79c00036f1aa292392490d5a439a7f2914105dd672ed32fe. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEZC62372387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e6e6e93d93c1328fe279d6a8f17ccb2e7a3b73bc8808259d8e60428ee1f406. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEZC62376088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee2e31729a49788a3a52a275bd239ad944d7ed80f11371320c26397ccc0d2a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DELJ81618638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8828669e5be82249014eb5e2ab2a6e9ed1d693eb139c7b74216014668ae8573. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DELJ81618641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdec26c0e9697656c4c74ba33d2f811818998ffde23bdfc1369a980562980d7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DELJ81618648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d664459ac9d462d673c31dd4eeac96aa3a6bf321b9c2c7236a225163a14a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DELJ81618657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47812c2a7f9129d900eab39f273882b78faaf9425b8783b9a382ecd0799cfa33. 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/DELJ81618658.