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 0x41d0c9a7115411ba618a5071a4401312b3eac180d5a488612e221435ee645dc8. 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/e8cac3bc-f0fe-4d19-bb7f-0ac90315ad3b.json and https://artists.proofprofile.net/proofs/artist/e8cac3bc-f0fe-4d19-bb7f-0ac90315ad3b.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 0x7b40c1b87d43ad8bb91cd9f207bbb2345aa1e072e006fe42dac1d07a568199ec. 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/GBEWA2101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb29dd2713f285814a88ae8bc8a276faa2f43115b66abd2fb4906d5dc5adf6c. 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/GBEWA2101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb29dd2713f285814a88ae8bc8a276faa2f43115b66abd2fb4906d5dc5adf6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEWA2101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a39725bfd9e3d5167f0e3838e24d2fe47f685feaa87fb94b29ab6a47032ce7. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBEWA2101281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0b5a85a81fb4fd4b4fcde73009c1e9efc39300d45ed742e28207636438eb7c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEWA2100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c1355155113e79b781cdcd1f545efe3b6000ace319ae9588125ab9936d3eb. 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/GBEWA1910770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516c01c0cb2191aa930dffe01d8bd5d368b1c8a2c296cce0ee703d647426ba57. 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/GBEWA1909240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb29dd2713f285814a88ae8bc8a276faa2f43115b66abd2fb4906d5dc5adf6c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA2101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bbe3fd144e9d1050364831e06e383052924a20848c51e7224ba55834a839ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEWA2101374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a39725bfd9e3d5167f0e3838e24d2fe47f685feaa87fb94b29ab6a47032ce7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:36:36Z), 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/GBEWA2101281.
Group Therapy 300 Live from Hong Kong - ilan Bluestone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3dee38fb8fb150c6b3642d71b32606ef49cdad0c35fc68b87513622f1fbd92. 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/GBEWA1803123.
Stranger To Your Love - Pretty Pink Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6d0e89f86ca7c7c4f02c3e640f9364922d46b9545fadd7354594b2b30f61ac. 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/GBEWA2201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b40c1b87d43ad8bb91cd9f207bbb2345aa1e072e006fe42dac1d07a568199ec. 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/GBEWA2101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5153e619a99cc843e91bcf0c8349c903488eedee89c666bf2483ffe8ac917b9. 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/GBEWA1803363.