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 0xeefa84f5339bf04cd39d4169cc04bb268bc181ad34dd07d7f3354a2b787a6130. 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/fd6a85de-d816-4a99-8e55-ab332f2af6d5.json and https://artists.proofprofile.net/proofs/artist/fd6a85de-d816-4a99-8e55-ab332f2af6d5.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 0xf1974846cfc86e3e29c19a7f3f9d252f30f6ad213af478f58c4d6506acbeeec7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRM2F1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0ef489d67956706e8d7215530f2ee0bcc4c9fb9504978a6424b8e5e9c738ca. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRM2F1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344e83cf32a0bf4734951634b79b0d6226fe25854a49ef6c9249ac123fb8c0db. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRM2F1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adbad4e8b788196265f3e8459e4b98f6847d807389310de0cba48955e63e816. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/BRM2F1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd25716e58e5886e4ca5c5d209ce0a0dfbf6e3649e28255ed12b88cab7dfd74. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BRM2F1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e16306194f597f2b70000d4635ed5172ba82c58e91c001d3b61e1d83b12258. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRM2F1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48b125e940effba841aa43d1a99c54135e1dd0a91316ec7ef1cfa3ee3fcf23. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRM2F1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd48227cb0e54c38c1f8690bb79af898c9a48a31bb2f09382520c46d7aea895. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BCP6L2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e5e02b35417a32dec1b5b0e061922a443223c2baf6b59423463ad1008a1d1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BCP6L2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbf0fe4e8634c94fad4eb5de1eb0f78bee363d350196d961ae7279b8e94c591. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BCP6L2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776b4d9f7298fba22da9ee94e9a5c52df513892e9cd888142674d87d1c629fd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BCP6L2100005.
Cérebro de Galinha (Ao Vivo no T'rextúdio)
Válvula de Escape / Rascismo - Ao Vivo no T'rextúdio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbce9a1372b66a9aaaef78c80c589258571fea3eef8795ba26e583165d4946d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJZ2292977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a5cbfa66b80123a3bfbc225c1bac63766a35a4d5760d2e8805d12b4237134. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJZ2292978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0da9a3ee75a1342da494b8f136aa4bfc07a4c4402eab538db0ab674f086ae2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZNJZ2292979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b052e1e74fa594d78a75baf3cefe1c821c2810dd4a274b91aca88391db4d4d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCP6L2500002.