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 0x3c46386c25c5649e1a1bcf9df99419809a23bdd5f74fb69ad10e7ec59d804f8a. 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/ffaa7574-61c5-446f-a8e3-77308628d17c.json and https://artists.proofprofile.net/proofs/artist/ffaa7574-61c5-446f-a8e3-77308628d17c.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 0x66a84c94e28505261ae1506f79d8801fa0066abbd87a5e72104e4eb2fc3fda90. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITD000400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81a7ad9d896b7628eaa16bbee6413f859cd7499b3c00164fa6ad41b43c2c0f0. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:44:00Z), 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/ITD000500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c56fa09aee131a0f6edbe1c2bd9f90470dc7c8d2752a8c06a2662d4257d6ce. 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/ITD000500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fde7d1cfa514b73ea39b958d1c66471da3c306e6792e06c9d96d8a2707853b. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ITD000500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e11063e52b6c26479bc17f69612b2e4603f972ae94bdba2d038d493391370e4. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:38Z), 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/ITPOO0100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3089506dd2fa5e5d64f7c37ff2380926c4374837e4ca1e396bec73606e88f9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITP120900041.
Allagrande (Praticamente in mutande) - Small
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2261f44ff2c218107d424ae1cdfed87f2ba7af5cd2ec2b7bbfa0125f0f2857a1. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:44Z), 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/ITBQ61300147.
Allagrande (Praticamente in mutande) [Ringtone]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ed83b9412d859e90d4a28c27e19a795353856f4982917f867d182fe1a17a8b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:45Z), 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/ITUM72301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca4159c16329034dcdc040558c6428e43dbe81e25d415230d5897799ff7f30. 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/ITXPI2500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388fd64b028ec9116a03d9acc543bb909c59d94932d783915b748d6897e9ed21. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITXPI2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a0370e767430ae372e5645617f9a72dde9f6ba9f95a4c51426740f83274fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITXPI2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a4d73eb0e5e1bbe4719f41fee7484d15c40221781760fdb21153bc0310dde5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITXPI2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287eea2758fcb48299912be3e390ffe0672881dd25e8f52146c9bedf0372fd27. 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/ITXPI2500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad4aec6c19a48bff622611117d7054a5a1607a268398cecd5cb3c49e79df80f. 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/ITXPI2500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40912f0f8679ce136c3a68aaf7f2fc860dcfc2acf93874fa692e845be9b55abc. 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/ITXPI2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dad4002a16c5040903852c6ed4c7a01ccc0a8d0fefdf7094e5624ed0b7522a3. 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/ITXPI2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6b0edba5f123ba4759b9fb69f5039a2e3952991ec7793278007e1377839137. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:13:17Z), 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/ITJ792000051.