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 0xef04da684b148247c20062b6c13881920b227917f78e0e9edf376a3cfe35cce7. 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/be18987e-977c-4ee2-84dd-10894ca69a1c.json and https://artists.proofprofile.net/proofs/artist/be18987e-977c-4ee2-84dd-10894ca69a1c.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 0xac20c17f608ef5d4e63971e3763df3c6cf55e2d281e6b3f32f9f6bf180e65697. 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/INS182401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562caa91022ed9292418b7957ebc4fdd44798229909bebf885be1e165bb9c9b. 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/INS182303013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e77db3d5a9de8a771d1eda018abdb344ea4162248ad8e753ee4a898d2d53a9. 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/INS182302973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de53cb283848c76e6532fc155b219838180cb4a079514ac12effa8949fbef61. 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/INS182302957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25afdd663f8ffa7c5b0426554c9e3b5a2038601ce1de2bdb721706583731991. 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/INS182302848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c68b116c441ddb42f951a4140c9dbfa2021adea286169823ec2570fe3eedc7. 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/INS182302426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af0cea77be0630596aecdf1e59acffaa7e785cd89b4b3342b00696a92bc1cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS182301107.
Rang Barse Bash - The Ultimate Holi Mashup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55422cb92edb20a5b1a583ecc8e6f6456fa94a42e874ff1cc13d055a1ef23e65. 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/INS182401004.
Aap Jaisa Koi (Film Version) - Chill Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a0ddf1117a7cf3cf44a6d1bbb3f6f7a3a5bc18b23e9ea97e1993ab9e85697. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/INS182303371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1f0f161c53d338b166dc8ea30ad85df884bd0fa54383b1a367c4a3b09ddf7d. 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/INS182303776.
Best Indian Lofi (All Time Hits: Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c375f843721e047f575602d7956bfdd6b37a11df81ca736c48f36bdea5787. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS172201689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97bf9009f17a49aaf0a5af01671290f5204aadfa1b5a1c5999816bb125c2d11. 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/INS181602124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d6e3d040d3979715c85d386911b0e3550bce99976d197da0494f5a23ae9c3. 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/INS182201761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387ad7ef2a63b34d1a46d5363a0f8feec54222f9f2c88e2fb22468e45c10350. 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/INS182203842.
Hearts On Fire Valentine's Day Love Melodies Mashup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dc9adc2ed57d320c37e6f3f45f24f5466cd2e0e486930e5e9ac165a612af84. 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/INS182400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5acd1b202fb1294f25457e4f37507c4a806dc63dd5529ca231f2e769de1c7ed. 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/INH562300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1731e3deedb66b13ead5318967b4bc7c84059fa5d4d28b589751d8d828447b09. 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/INS182300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8d1c7ed3ad4db549485e295fe56c43f13564c869d204cdd4bf55d546bfe358. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/INS182300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5347d37446eefc2f25342229f65c06fadfb9ea170c917e8c447acdc6ef39683. 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/INS182300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd988020c0211a4c60ddb359666a9e8205dc8e3e565922edb6cbe179c34446dc8. 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/INS182500158.