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 0x02b18c989d60ca9dfe4ce6e9e4f462fabf0404c3766d14fdfac153b28fc06ce8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50f2fedc-5555-46b9-a313-6858b2381fe2.json and https://artists.proofprofile.net/proofs/artist/50f2fedc-5555-46b9-a313-6858b2381fe2.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 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 0x811b8bb7b03c1f8f0bc14586722a9b7578b28573abe3ad2e56ded14466783917. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/HKD012413901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c5821106922d58cbb2b9472a0fae8d1361e2eab7cf404509592ef2eb87a32. 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/HKD012425580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807a144af0f70b280307b497698f735c1b909d5953a8d628183a562c8f205be0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/HKD012445436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50e0d24d6c2d4dcf5eef2d984c788bd20e7078fd9b4271762fd5fcca7d67a56. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKD012445128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0844bb6a9a6243f493310fdc5a6932e8d02bb9bdbe694882e2e498b4e1f2ae. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/HKD012491197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d1ba0d33541e4ebe1225ba5e97506e01396e1951b83746f02ad21c7175a30. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/HKD012498765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab6082d6dffe111871951b89ba71c6489987262d772e3f0b3d11328d3373443. 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/HKD012511265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ade7240bff32003f3cef9b4b197c153e971f5cf508ff4e29dad66a72e807911. 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/KJ7TG3859713.
忘了情忘了爱 (不如就戒了情戒了爱) [Live合唱版]
忘了情忘了爱(不如就戒了情戒了爱) - Live合唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8136ac034b4a6550501c194bcd29cb159cd7a1f5cc547c3dd0435ad17cf33443. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/KJUCZ3547789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897c965c61721f932b0e87b45fcab572d56d33b181ce9cccc0aa4ec720e1bab. 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/HKD012518366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b95f978c92a1800fa50e86f6fba0828e98aee0f0bf2638559713361b9e041. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/HKD012531757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7a4f4f4f25bc80492016cd26cb9583084305618d3ff3ad2b1b30039b3a3dcc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKD012531935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df8f6b6c955618f671a4af5e159f830f523b7b2230362ccb785d5ec0daa464. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/HKD012565789.