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 0x9bcd96f8eb59511765d541333781eb35ea7e8641aacccfdb10d18a62c75df5cf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb5db4b6-7ae3-4ecb-b324-f2fe24ff29a8.json and https://artists.proofprofile.net/proofs/artist/fb5db4b6-7ae3-4ecb-b324-f2fe24ff29a8.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 0xa35a1dc0274d25d7c13500e5b9794a4bc627a652dc2f8e144ac3230add4149b3. 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/DEEN41609401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db2857fffabab86796c713b767489ab31f8cdc8876ea509d16073912e8be56. 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/NLRI52100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8d140b445c1f5460ca5ad0a84077a52da7b5e2cc253218ed3515c92dcacc6f. 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/NLRI42200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4bd81cf8c465ff9626e5e62afb1aea31cdbe65c5af7bbd504d75a58de2e53d. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:37:33Z), 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/NLRI42200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f8d96d8e077e04a5268bb97da6d808da55e08a28f0ab752deaace4b31d327. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/NLRI42200010.
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 0x05fde60abb3c872f3762019972bc7cdfe42810dd01e27350b672e82b8f1d0851. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLRI42200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00f16669a687440df52d6ec0ee55030e7f3bbe8a9da4821cca5fb4ae13e0779. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NLRI42200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49caf37757846556ad065ae3d6f70bc7c413ec405a900fc51502bcc7de4ccf65. 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/FRDQT2400020.
I Wish I Knew No Astronomy When Stars Appear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d6658b7e9744bf027161ad24d7021c21cedecdf3dde01be443bff6894f0321. 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/NLRI42300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322990829deedca8bc4357436d021566ae2e4d9da7a22f876a89f95f46b836d5. 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/NLRI42300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31234e5967cb100f41fb16d47f44d9b0694348e086b39de193672cc587f0b565. 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/NLRI42300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce64f157f9ffc0281546d780a0aa6ec25e7e679f71a30e7c41cdb231831bd8. 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/NLRI42300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e5ba7ccd917250eeb4d62dbec6f36edf98fd6e70ed01030a507a947dc7ff3. 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/NLRI42300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f961a9ebc0e72a8687987cbab18f94c58e55aa7b9c71e074966476268c102. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLRI42300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca72386442c186d7e6632f45fc4631b2bb6d5c6d647d66e7e7281f6ab7e3d1bb. 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/DEY141700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2362c4c04e1cc1db526c8dd491a1956dc94ddd2c1a51b7de8725a39ad6ea1f7a. 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/DEEN41106004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bb92aa68fecd136b31b28cf3f0bd262ffb01a874018e4e75c5712abb039092. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEEN41106001.