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 0x12d72f467c1d3715061d4d6e1a3066031b499a3f163cab1fd446bdafd0d062bb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b97d0af-daf0-443e-bc2f-46be1f88ff92.json and https://artists.proofprofile.net/proofs/artist/7b97d0af-daf0-443e-bc2f-46be1f88ff92.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 0xb29ba3b3d93a592610d380bbe48d8f0ebfae0966b8c04603a2132c60b04d8c7e. 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/QZFYW2198705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c541ac14190a3200b760853605074c3f3199f555cea4fe8d3b1071442ccf41d. 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/QZFYW2198711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ae1de1018462f54542e6f75a36b9ff4ee4bcadb87016039917cc7bf99de6d. 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/QZNWU2017880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe562e11cb0a1471d0c75d0a664b73cbe9df36228339f06832374af25b547c276. 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/QZFYW2198712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d2bdd449909496aeb0bf00981f27f023955538251e50e622ca92d930142b64. 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/QZFYW2198715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0fe307c707a3243425747b9a47d37f00190a791455d1117762ef3103bbbfee. 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/QZNWT2031142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082d4fea0e2f407121b3df21ff216196869477091ff8f5e09fdeb67684042fb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZFYW2198716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf809262515800be926e2614276f7957577db95c1f766b60a089054b7887a4c8a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:51:37Z), 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/QZFYW2198708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3416e5227f90129d505b1de307f934e24a41676c9d55474165ce31a129cefd2e. 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/QZNWR2187670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f6c9bd0b683bfdaabe182247f2725a244d2c35ab399172edb466c60a19df4. 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/QZNWR2187671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ae1de1018462f54542e6f75a36b9ff4ee4bcadb87016039917cc7bf99de6d. 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/QZNWU2017880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d55a57e02abcb40d8c94deb9e72e5445c49b41e15af30ef2c8620e034bda7e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN92273837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5166e976f600d2e6204c86c5369e839df4991e3e800e9b519616d09e841eb049. 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/QZHN92273838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ed67af921f2a947e4ebca2317945d9e56bcf00b7c08130c7000ea15858652. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN92273839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4513118f2c82a8d3152696f03bf03d2604c115fbe140fb69853fb2da9640fc13. 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/QZHN92273840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da52a7824af209db907005765f7a733211b1dbb19779ec7b6606ebc283a5aca. 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/QZHN92273841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b461223b628cbbe92eeaa6c37d732f75a5a6e0383551cb46853c1077944f39. 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/QZHN92273842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc66cbe3f2291e127458f14dd58af73dded8bdbaa5f1c402f50946d3b6332d. 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/QZHN92273843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1817e9ecdd7b88b41b052f216f2b35a0cdfc3a8e1be377fba426c01156d27b9a. 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/QZHN92273844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac8b7f3da87fd57f65e8a68c28b7f9ee2a37db37332cb02b9e17f8ed680eba4. 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/QZHN92273845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32c5ffbacf6ba59fad399f883e65ec74742757c9c5be154a43964700ddd72fb. 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/QZHN92273846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d18bb3b31705e70b8ba29875745a8f6839530be97f488889af96ed904a676f2. 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/QZHN92273847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b99020c90e70ba2569911632c7fdbd66116aa05685873d841bd3eba07ade3e. 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/QZHN92273848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdf246f7a7de06d00eb39f300aa2386ffdd555d965daf9901c3652da850e152. 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/QZHN92273849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207bfd419df293ae663f54e0b3a78346a9495cc52dd78a8f83b38f4e72f9571. 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/QZDA42260788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cd48f3627fa0b409af3ef6167ed18ebf89a9dd3441c59a7febc06b12c0ca23. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN92273850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97c30f95c846e449bb1a580ec07ed7fad794b77a151e15d8573917aa6a7b00a. 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/QZHN92273851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec4bb00ddab478bdd1cc2157563daa7fe7953211ade15dc4c32a1e89fa491cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN92273852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74faddd7f1fb0615ecd52906b7f6f8dc3720422fe874e0a6cc0c307d377a98ce. 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/QZHN92273853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f961a05ab826a4ad879b1f2af6e14e3770b5800f511402147c5fb18bdfc471. 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/QZNN32110238.