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 0xfc981e61eb10b21de8462d417830b59c8d488f969ca27093ad0917856d28508f. 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/52c9055f-e4f5-4d56-bc75-a5583b471c80.json and https://artists.proofprofile.net/proofs/artist/52c9055f-e4f5-4d56-bc75-a5583b471c80.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 0x18303496082a5fab7492f170628c442e90eaab40349442f21850d14bc28ede49. 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/FRX282109610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c0946a475ea02de5e235b344b661c2b971191ae9744cc015a9f6e157226045. 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/FRX282109612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0738abd9d1787b8acf456629aa517a57c71cc90c14886ea15471854b0990d9ed. 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/FRX282109614.
玦恋 - 电视剧《千古玦尘》主题曲深情版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ed1b6590a4679c2bc5e12f266cce5316e6a004bb3f15b0973c608ecc7937f. 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/FRX282109615.
玦恋 - 电视剧《千古玦尘》主题曲哼唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb053f6634cae355adaa2c939ef98a00cc6e59f2e3e4b05257c6d1d028cb600. 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/FRX282109616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e843014b6ae8c0c76ef372c1993ccd842fc6d09ffb136b0b35cdb637c592763. 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/FRX282109617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a67a71d84dd3a46a8623d2ad3efc269aaf4aa92b36af1f6bc4275b3d9c8db. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX282109618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34ab23e65371c6ecabf273e4a363415fbb332c8cb7acf8f26e3f4b6974d24c4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX282109619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5fc0bf12186c4ad82d55f6d3c380b3e2e826642a616ec657d970b39290e21d. 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/FRX282109620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8373471d9d786aa274d014025fe5033cd8dde2d8e60f91f5d4c1232a87490. 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/FRX282109621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c5de0383668404e6dd3fe96ee7edfb034081e8894badb004ecd7e42e115ae6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282109622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20a7770be9adf07085d002d04b74bf89cbd0999718ca44d0cddf6bfba9740df. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX282109623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274b5081d5d52f0656e0bc19f56e0dab597a6fa01b6034db1e8042a721de5f43. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX282109624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cdc40a4b714fca18202c3a74b137fcfd589486c3087789136d77bf027b1b92. 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/FRX282109627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f10e53256e62a4221d5b5651a4f67e545b6270ffbe27a1c35817d5a9a85099. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FRX282109628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5b6d746ab02ffcccb72496aef4cbf9d57a3210821c5a8a597a6f4d5fedbac4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX282109630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15328aa024b175112ec287d8edba1114612934af5c5809ad54735f57bb95c0a. 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/FRX282109631.