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 0x587509aa9fc6c8f8d7d12bfbdfc3ab5599795ef23ef3a24491f75680da70dccf. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4214f2f2-a2b8-4941-8969-eb575ebc56fa.json and https://artists.proofprofile.net/proofs/artist/4214f2f2-a2b8-4941-8969-eb575ebc56fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Persistence of Memory - Berni Turletti Remix
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 0x348c63dbc023d6bb8ee40fc69cafce911276e740933e520fb691b87c4cea7eac. 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/US83Z2142061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccba885ce5b6c8a3b716d671e86ea4126a957c2bd792a536aaa7c56584fad6b. 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/US83Z2043907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e56fe1b9aef23e77a3b13c1f3025aa84fe0971db22db90ce24c849d8fcff7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2043908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf17d85778e6d781d3990d8b91bdf519a1e5a81cae3cf5a750ee34aff5af96f. 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/US83Z1918970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ef7ac245011b4578dd92b1b944e08e1738a7b153e27b79696c93c30f9174b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US83Z1918968.
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 0x472ca3e400c6238a08a953c5dc8f22ed0fc4cc7234bb384389b73cd10a6f3972. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z1918969.
Synchronicity (Compiled and Mixed by Gustin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe579c991772a00d0e24362fafea711f77106cef8742bc1dff1965020e5259c23. 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/DEY032202445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6325cf15baf7fb666fa76706528e88f2320e2418da9c74ee858614bf27e3b06. 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/DEY032202446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8131203749b00fd538b198958bdc8f2d651a1d7c2efd621afcf26e63bfd2e8d1. 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/US83Z2320200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec5b40288ae21e7c3f5ce9d37c85936464ab54f47041991c2a9d1ec593e9e3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2320199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d34afa6fff543a497ac2179d987c400d46d9ec050e732182f584a82abd0e4e. 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/US83Z2220156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389202cedcd9813082fe027c50cef3cec63d3484fb7cfeddd2cb3fcd2e30f780. 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/US83Z2142649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75b7f387a6cee4d283de2eed63b8ce725008f1a9050c8174d1e703b386d4138. 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/US83Z2142652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a098990dac9534763256c7e6a2a3586555261f956ae6ea491de96d79371e02. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US83Z2142650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364d5d45c63df8ba05f56f00db13ada983f98d19ad522a9e3ce21b79b364605. 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/US83Z2109844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0493cc875fc83aad4371942cd597f0ee28f4a7982430ddf1c99439363b732c24. 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/US83Z2027090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4359fcca277ceefe2c14f5fa608b1d6b6fa116fb95fcbb0855ac9881677caf5d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:34:32Z), 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/US83Z2027087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94fe16293eb4487c4b5577dc9404cb97c4b05f5bf7716b03d909e36270489e0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z2027088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f626ca95c8045274ea2c4d596c224fcc1e15eb84e5964fa5b42eec7bf7d0141. 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/GBSCL1968006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3e95c71e7793fa9978ee6642008bcacd67d18b9f096afb00979dbcfdc71f9. 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/GBDRF1700772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad960781d4afc685fe8cf93a36db62adad14f7c155b03b41e8bebca018b68e2. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBDRF1700771.