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 0xaba5902cea40a34a3d653e0a7fbacd758af3a9b49a1eb5f594f2068c1a06e5a9. 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/212363b4-f534-411e-8b33-1994d661dacb.json and https://artists.proofprofile.net/proofs/artist/212363b4-f534-411e-8b33-1994d661dacb.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 0x7833e037dc031ae36b1f9771c8c1244576d4648254d0ae868ae2248f24ccb8b1. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:03:05Z), 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/US83Z2112595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2787feead1ab6b0872dadeb27952f5434a0fbc57c5586bc9b40959e9f17667e7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:28Z), 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/US83Z2112601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2787feead1ab6b0872dadeb27952f5434a0fbc57c5586bc9b40959e9f17667e7. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/US83Z2112601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5ce3c52ef2c5a9da5ca278c43a28cb8e30273348083a6cc2cc836e28c437d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2144944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b64acc7cf0cc55241b8829c12f22955043a80e90ef4b098a94a871b74eeaec3. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CH3132216711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2c516adc250f566b85cebf723294ac051bf7f59000e83d8e5148655ac0a79c. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/CH3132217047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3eadf668a3511427127d41b7030867d0244e58b3249a5820023907d2f29e22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CH3132217049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1126a6a17d5e27bd669cde95b5cd82c41ef02c014ac112ea1c88e60085ca7ce9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEBE72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748cf336f9f543b6e7588b3be66fdd8b28dd47edc449cdc87f41b0b71c02335d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBLV62316818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7845c217846a626d78ed2e4877dca4194be2491675e95addea56e4863e15dcc3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:32Z), 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/GBLV62316822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0ba68917319f11eb4e7eb6229d8d4c67c8b142e0c71ecf443eb9367fa41d46. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEBE72400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5fce3fe8783d365c0bc6cd1f2f21ae53327530130e11119837d2cbd37d5d0d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF712502546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cad9a0ce1bef68f0030b2dcf5c79788012e5cf9d3f30cb6ea39282bdce9d5b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLF712503563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2a4c823c39d865c1e0cee0120adcd2d3b5f4afa4f49ba0c90a8cfdb4edf5f4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CH3132419973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c9352a8007c7524cf245b8e0ded1137fc34eedbb24c83cb1112dc3fc0a302. 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/GBKQU2426671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef283c7554aecec6dbb025cd0d4fbca2cedb622cbb05496062af2d8ad337de. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2380357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc893c5289e120d88418a8dcbe0e4191deaf53982f1151aa87f7c24e3637e5b1c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z2120261.
Colorscapes Volume Five - Mixed by PRAANA, Estiva & Klur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c32d33f1ed284744b1f30968bdb2ff8b350d84623201c3a6d0692f3c3ac3124. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2374547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06db6fb917d9b6500aa585199547bf8c919098b590f06ddea9dc973dea53c77e. 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/GBEWA2306772.