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 0xfd8d92c4c62e1a2084633e77ca6b5100f96432fac612dd6a3e6a926c8f483218. 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/38ffb9b3-701d-4317-bbc5-9f26db8280b8.json and https://artists.proofprofile.net/proofs/artist/38ffb9b3-701d-4317-bbc5-9f26db8280b8.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 0x73824564d57f8b148e99c80d72649ba77d2ed59c14a4612b8cebb5f670fe0f94. 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/QZTAS2256764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616f12c0d7a7eb494799f4eaa9c2c28a9edd2540df51828dc9f1702d24457f2. 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/KSA012315838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcd9466434de5fcfef1c119819ce7ea62a4b62f34b180f00238f30f89c9e862. 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/KSA012315839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b28c51df7ed3de2cdca9ba8ceaa85522e8d89fddcd9378017a3e8b20581f68. 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/QZTBB2360411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050e47833b42bc8b16d6f3f71dfbfa3b78a1f3ffb3bed38d39e1ef021a0cb80. 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/QZHN52340340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927e1fc9a0391cb26e0fffc4925693e75cef8706ea832d8748e8818fe63503b1. 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/QZMEP2201642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d00ca933d975d79a86108a689e5651ab081070258c16e39bc383e128e7f8310. 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/QZFZ62343004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2446acfc95ad67c03fe850a88bcbe66d781883eee5cba178d95fac0398ee5371. 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/QZK6F2216075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde77c6b12f7883f5c9651ac4147126fe70baebeb711c319279029520ac8d26. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHNA2219038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c60711cfe7f68bee9eaa204a6742258172bacc40f0e57ca5a6efa1b08731d96. 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/QZNWR2177519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f994be823cf4ec4b4339353918abd5d2c15414c1e6187cd49f82fc925c28a4a. 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/QZNWR2178567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530fde12c664a7429f0a22b90c2b57e22600ff2e11c8ef7d419ea3b14fe138c3. 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/QT3EX2418419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2694414ce3bc1dcf2d21689a9adc80c77efab47909a1c46b919cc0166f31ea. 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/QZNWQ2462869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ba774e4e20a25edf482c42a914ca222137869cc3d1a13a5c28d5b3fea0f561. 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/QT3EX2418420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70660324d6240f239eb1ed3ed3586b05deaf3a1005102641dd3487aed382bcd5. 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/QT3EX2418421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784657888aea7bcc166e17fa1a98143e0f6a8ef8a6442dd1015c10876d65214f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZWFL2472850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5f58f8408f7a05f6fb16c41975cbe4ec850b33271b4e07ba651230e7437c0c. 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/QT3EX2418422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5897d199d32903a32d901651be16904aa9c70aadefee8691de6c7c079f96d9. 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/QZNWQ2462868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5409dd849aba1fc3b7a17dfd2c5c5621d324c44dd900a3d9e40c8644f7d1ace2. 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/QT3EX2418423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95e15c5b2322d45279b5a96c274f663cbd38cf8e5baf3c561f059a84d718005. 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/QZZ7P2477159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a0013acde94623f4f36a6b3ed3ab91fc6cb8ddd47a6f23928e50cc77b1d7cd. 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/QT3EX2418424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1740e97fa353a1e0862993e9cab89d2e1643273090a68e9faa62526cf72c5e0. 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/QT3EX2418425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa564225a82a5eb283ee37bdea854c96267dfc9061d1c3b8abe92a383af48d5. 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/QZZ7S2499490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc303b4022185af312ed47f34e7f37ac7e5526562697c668dfc880e5fbc0e91a4. 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/QT3EX2418426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12a945db84cbc54eab02331ccea493ce0c8295e356bf6d200180780f60fb369. 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/QT3EX2418427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb520784020476ff3a4fb2637a54612322986ad5645e205d176db8cddaebb29a2. 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/QZWFQ2321496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd819a204342af7f8a977d0fb403cade6380395a567c332a6bc375d38825b2d. 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/QT3EX2418428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6828a82bef9e43036cc694780ecd0309f376c5e848bddc6f2da64758b852b8a5. 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/QZNWQ2186113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30120437c1f7a04501a81c2a892245aa9b61eb92a05b32d4eee23f2144c7503. 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/QZNWU2197500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3275a56db3bf95122fcad3f6ec92a14085584df0dcb5694605f6e15b3bf7996. 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/QZK6Q2470419.