1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3ccd8868f15559efe39655ca747867a4040d2a50fa3595fa1a0bcf653459a166. 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/62c34db3-206b-4d46-89ba-5134617a4f6b.json and https://artists.proofprofile.net/proofs/artist/62c34db3-206b-4d46-89ba-5134617a4f6b.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 → block OTSBitcoinBlock must exist at that height 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 0x014a49eee9407206584b362e5d2546bf453bcb8f720fc0deef985c07ca675c28. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX282308449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6b869563351a881833e1e24b48b8889124b533563d95c394d87d52980796e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX762357021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d9abb6adf3568342844fe00011ee36be4dec17b0800c6cd0ce80931efb6880. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX872341945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8680694bcbad117cb0a541122a8bbf2a1b6df4274faafd1ab451ad64c416cc92. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:41Z), 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/DGA062479467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca40c16379a0ca09a47211047ef35fd7846bb16a81ce6437f81a8bad28141c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA012400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a322eebe26c7b47048be312d0f655f6ed8df35a081010a619d3b1c4a1cb65dc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:16Z), 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/DGA0H2434550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df1c527a3adf9bb98396745e06785de4eef3108a945fc4c42196e37067d132c. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/DGA0R2477997.
幸福是养自己的心 不是养别人的眼
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92d0a9ee466caca1b6704fac3174c340fc52fda5c55ce696fb958d416192e3. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/DGA0S2439683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f3b6d9bd4b3b11499b3e345bacdfea45119695a7fb7ff167d1227822e08ddc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA0S2488952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5791cd0b0a16a69161306d0e367f9a514e28cf41ad3abc6cf0d9de68c905d3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:13Z), 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/DGA0T2419116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e3d0c54f18428333a7473f32249b0b5d7a3a39ccc660ad3993a4aca6691a39. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA012497926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5af56194ee58c1de99af6031d61af652076ef1db4a0e5d8adc8889ca087710. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42526878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07747d7e673e2eb73742423555da0449030a37816c84386dcf760c66262c45df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA012513135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d774f4d383fe2cc857f43cff76ff8fbef4986cfb6808c879c34cce68d07b20. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX202560565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45196e9983868211c035bc284ac3386757b28525214df46ca07cd783bd820836. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:27Z), 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/FRX202585906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647ba8d58a10ba999076c5d90ba0ab5083f38848769c72ccf548c01964f2c853. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282528936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4adfc0b893f39d504f74124f3773776dbe85ed6c4152d346fe8bc25029ff6c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX452504411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7818f4c3caaf17b69e8dba3fe9ce22a03d57fa99bc17baf4994e1eb6e7f3b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX762586122.