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 0x9b1ae5747c492b02d7e8feba8b3725746a88ebd7744e3e6717920b4c4ccec511. 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/cbac7721-6448-4dc0-a581-61ae0c190829.json and https://artists.proofprofile.net/proofs/artist/cbac7721-6448-4dc0-a581-61ae0c190829.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cinematic Atmospheres (Original Soundtrack)
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 0x64a9506df6a16216329391be3c7b2271c18482e499698de1fc93dfbcdd6748f1. 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/GBFSF0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0951d4934e5c4213ecbcc53bd6c4bd42625af5c0214df486658e36c9df3957f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBFSF0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2374aa190fda1219942551269e884d2d41ddd3a423d5ef1f5aae18bb75479ca. 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/GBFSF0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130e5a527fdc6afaa3d3ef519423319f986d7f2adcbaaccb5517ba97f5ae91af. 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/GBFSF0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ddd8878ae6cf12e343b21cedb484a511ab32a1f1d329c5ee0d37f843bca63. 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/GBFSF0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb293578772eab79ea5ab3bf463b2bd2fb1bf3ea85fa2ca8612ccc7872ecc0238. 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/GBFSF0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25d699f3a4a6870e067adbed523a37495471e8b8941a595681b44b6402a4805. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GBFSF0600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba211e407402e8265598071b629e36541525beff59643c44ffe8c30f5248a762. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBFSF0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe3d57219f4422d4fab997b974cfe0f367bc98dc88e5131d1841ddace2240b6. 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/GBFSF0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca58fa9c1bdc453945039d9876c9a8962ec23d75fb1027fdaff621d0eeb738b. 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/GBFSF0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789417b3b45c141fb1d117841aad9fb7af269b30f076ea0f18e2101adb6d9150. 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/GBFSF0600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a31223e64ccd647677f97c6f3c173345c28fb663c4552cd4773c77335b2fa7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBFSF0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa495e20d7abf365a677fa979f4348e98a42be35e03dfc644b060035ad09c2d80. 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/GBFSF0600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103d8c52ae78d083cb1d91166062dbf08f8dda9d8b331b6628e4160079834ecc. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBFSF0600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a1e938e3547fecada89bd3106fff28a6897a9ee0b39c970b113c705ca18dfc. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBFSF0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f911acaa1c709ff99ae4aac5d3ecf1f30fb5d7b88094e79a2c8fd5267a1b79. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBFSF0600016.