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 0x6209dbf15e72379e657bfb5a7ee204ababa228087c79984c92720c68864e0779. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a84a568-1981-4b6d-a099-84ea2bb7d3ab.json and https://artists.proofprofile.net/proofs/artist/0a84a568-1981-4b6d-a099-84ea2bb7d3ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Disney Junior Music: Nursery Rhymes Vol. 3
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 0xaf7659085d6b1a3cc8bb316acfae9a3032a2a5cc5c26b436efb3cbae61c06eed. 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/USWD11889285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf452dea753f74a17b282587671a5d7b51a6abdf96097cd3779504460e126470c. 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/USWD11889286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53e4680aecc6a1a537cc7021fda0a57bb37afdd2cd6374c46ea13c39d3f4d13. 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/USWD11889287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d3323ac1fa71474df48ba39e12eca261b18d4246c8c03aba4f9e289dc4e8be. 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/USWD11889288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb168ba72327bbda323506d803be0aeb4e46d5bc697744c88cfc50656ffd6b75f. 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/USWD11889289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11045ba29fd10d4aaa48bd40155fbc36489fdbf21aabaa3f8bd97bd51de0213a. 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/USWD11889290.
Disney Junior Music: Nursery Rhymes Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec2c3c01d4d686eea17fe4c0b9480995811ac55564caef2382f3a143a9e6eae. 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/USWD11889214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9b6e94723c064201551cb83af06eb8ec000f57556717a5a1ed74ff90bc71db. 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/USWD11889215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535f7918dd230cf8eefde6b6f3a81f44bb23da803a572d87f40f21b217bc0faa. 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/USWD11889216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c90da08410ce59d709662cb9f319bf600c0abecc591d13bd034296fb0cbeb8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11889217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53104f833f859d6b386a436af28a6c1280ccb2d3bd8f81e54aa0aeb779c3da8e. 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/USWD11889218.
Disney Junior Music: Ready for Preschool Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7fe2e9295832b3d072c18b4f6749008f701cc9965f6a516432c7835f4f0b1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USWD12010232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a227b1d82df4387333bbc5cdefc388167b846d22e15e136883ddf4b9ad6d7c. 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/USWD12010234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8dc3bfa3e604066aca854aa06e7e7d34384ad761996f7911a542271efae6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USWD12010236.
Disney Junior Music: Ready for Preschool Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee755aa1450b74872d52aad133e4870dc4510d76e55a0bbc72aa79a4ef4eaa2. 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/USWD11995104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69e4d6e5335523c51c071f3721d801795066f14949bf2ea85440774d09a846. 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/USWD11995107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3659d8d7329dc780bd2f8e77a4a8f5585f41c7bee819c5112ac9c1cb95736e. 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/USWD11995109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4408afc6982052d8d4281d8d9f561762adbe6e6be5f5fe8ec81214c0d4317b6e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:59:05Z), 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/USWD11995422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad59b51307a06d6ccc47c0b53ecfedba31e63c59b91b4247f830ba2f777613c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11995424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ce70f63438a2d33b66e437977e6715fc03bc27b2a1eb5ff5bc9b43f2c88426. 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/USWD11995425.
Disney Junior Music Nursery Rhymes Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c6cea05559087a3a26b30f716f98bc4503270beb18598cff9aca87321de418. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11782882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100230e15a4854beb7066ce7fa43aced411fe5d4d0c06468eea82ee6c44f9b0c. 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/USWD11782883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e8b3d63247e1174d4711be95e2b53d67eef67d45f3d3943ccad7f70efdc8b9. 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/USWD11782884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3989df000358fc69e96f47f426e31f6e51b038a95b27fed24231f8423199a5f9. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USWD12010231.
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