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 0x5aeae800f30ae6b90d1ffced41626b2250427d95dd98eba659ff00548af77d05. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9240e2ec-22ee-4565-a09b-fbaafadf938d.json and https://artists.proofprofile.net/proofs/artist/9240e2ec-22ee-4565-a09b-fbaafadf938d.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 0xa42252082dc730936325422f2440d9f55b6e7a77e343c121b0b702a9ccd2b9d4. 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/SEUHA1601501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf65c5999201ab66fe52ff019e3fe719ca37be1ac07538f196e9fb55c7a04773. 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/SEWFR2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e96416baa6c05de0baf32e63bb9c4d8d59ccc67a4f817b5ece6964d903a32e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEUHA2100801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ae60a333f12ccb99f4cb659c10c3628a54264316c8988e6f3995e7605ffb84. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5M51900103.
Guitar Stories (Sally Wiola Sessions, Vol. III)
Reason to Believe (Feat. Jakob Algesten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4559da040c06476fc927e0479c34c4b24daa242500e8ed48b21915fcf6b7b12. 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/SE5M51900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c4f703f6079cf1423c379575c1a4bee75eaf5f10b6ed4f27d1fe24f0156405. 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/SE5M51900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa7bb153c5143e0b19924f991bbe4b7a84b419e31bd61b9991fe60ac4bb464. 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/SE5M51900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4957fdc0a43e2437dddd035499094fdbc6eb162f4f9f05ed906230f9a98a148. 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/SE5M51900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2818f93f4111883842e3c526b4dc98f4553d01df1ca52228b875422fc096f4. 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/SEYOK1723039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5476fb58ef8e7d11a72e7548be7201161ce451c62f26903d4a0f8a469ef5e3. 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/SEYOK1723040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20ab6090959ffd748cee135b698f582c14bde45e26585d582a77320134a0f83. 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/SEYOK1723041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73021417d8f433951861ae5a3f750eb69a47d32750467d99b9eb06c4661d5ebb. 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/SEYOK1723042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2564b3c6700afd52d99aa3f4ba06dd3b7d6d469fd265cb775c111c2310a86e9. 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/SEYOK1723044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefae51e2d3e492d045a135b9909ad60bdb735d1632969c18bfe41b6b91f6bfb. 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/SEYOK1723047.