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 0xea49f1576d9eaaecddecf1a7ca552c4043d1d04370210846e854e21422ddc198. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1e257f8-d1ef-4f55-ba4b-3730b5862308.json and https://artists.proofprofile.net/proofs/artist/f1e257f8-d1ef-4f55-ba4b-3730b5862308.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 0xe7d1e343573ad2b8936fb665eb073a81ff3dd6932cda7bc52899a9237e372dca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLA509212501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e9b041f052956a23e692dcec877abd685fd4321b2d0a4255ba0d02b861650. 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/NLA509212502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8512a842b50d15fb3ff41095b79c2814c1a3fe520bb5d1833426e5aa2b1a9cb4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLA509212503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fee5394494e5997ad7752c490f1adea987d8103317e1e27c7167c88c7c9e2b4. 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/NLA509212504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732a590f5ca4d27cfe6674617e4a3ee34fb3918f9045f26b8dee563ef567c6a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLA509212505.
Dança Sinfônica (Trilha Sonora Original do Espetáculo do Grupo Corpo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704673b8b0b19c864ca4427ffce67ada593fc854fbd653e79e91386f80d763d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BRCP41500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf4768dba16900a7c95981729575266afe645f6627c760679d0f15c837420b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:29:44Z), 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/BRCP41500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb393a97e39abc7743641f5c7e4c3032c86295955eaa1ee0b7742f110d04c3. 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/BRCP41500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b534bfdadd5b85a2b704669f23f8a819e857adc7a1de51d6d8a32100cb84b7e. 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/BRCP41500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40406a512d67a3054f261b89f45165599c1ceec8a8c457a43769b90cd30485a3. 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/BRCP41500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68c8027365e9e0b5b1fd7ac5b3aa747cac60ca766e724075f703a77a5c8178. 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/BRCP41500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fe0bee7d20180b213b50a590aaf8b97139147184ee202466bcca34493a4fe7. 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/BRCP41500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1bbccef0831961738de43fc8c0e5d113c9db73ba8ada826d052743fd439ddd. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/BRCP41500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8b48da92ed55b5aa7b487b1ab926bb091eb8c11f6f284089db1f7f0d309c8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRCP41500005.
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 0x25ce8cec60f09f16798cadabda3819c9e4a579c6fe65ea391228345d0c99bc96. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/BRCP41500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795043d9fa2ab7b78f459830d99395fb7d4c6a46ac6f9714ff815020251c0b7b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRCP41500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cabc9915d174bd26e53be655068b992e240f8d41c737e7158db43e36aa95f8. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/BRCP41500012.