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 0xb3cd1bcd300beace2c6d0d40ccf5442cfca84bf174f29f4ea33744f34ab9fab7. 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/3ebf928e-a39a-4514-ba67-df841c0230c6.json and https://artists.proofprofile.net/proofs/artist/3ebf928e-a39a-4514-ba67-df841c0230c6.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 0x160a0ed3b4c161f77f547a8dd6a37f0ca1d1ebb54670778035f6a88836eaa7b0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/BCCN42200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b948fdff6f07e30c17b011a53c22ade6e5a763d61fd990cf932dca3bfee9c8. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZGLS2338592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2590c2c9ade280965dd3fd2e5290cc3602699405bff3057c3dedb96d890202. 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/QZNJY2342274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e8d3cec972b272e5e20dbad428944eb11e0ac6a4a0117982d84f92ee57e695. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNJY2342268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c4e31c191343211cd83ccb6c3772c116ad1838e0d841f64f440f328bfba916. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZNJY2342269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88df853a41a76f142495b68dd6241f390a44bdd08f1c57e024a8247eeaa57424. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZNJY2342271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3183534fc33ce99a16bf4145ad804d8997e2b3f60aac692a62b1c24d03350204. 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/QZNJY2342267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dce8acda76501ccdb8bc57ab0b4a44a2e290219405b09be42dd4a8e67fcd91. 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/PT7YQ2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a62849d4f7058507e27b8ddf74ee9bae5d4bfacf55a59d95433b6f765a87ce. 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/PT7YQ2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e72fe11a2605439c0b2305508432113f92d39ca3fab0de4603d986f808e1bd. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/PT7YQ2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf102a3cd84a6919c17c59b1f3c610f61b9c75a0dd34c96beefc2631a890f7d2. 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/PT7YQ2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06b510b80268e2b34240835ce5d433388aef42de02f3c8ab0a903d26901fabc. 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/QZMZ92335108.
Ghetto Love (feat. Chelsea Dinorath & Teo No Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2a035173289280d5bfbc7aaf88247582fd7f25d2721229bd9f216e12a934c. 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/QZEQU2108135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b58b556d5d2765ef3525700a980ad1014b9319c5640595d765402addefd1acf. 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/QZEQU2108140.