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 0x4e11edf050a121ccdca08ccaccf682e8006af845fea4c0acafbbb98b7ee7f25c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/061b8535-5a22-4ac1-966e-9f507f61d8fb.json and https://artists.proofprofile.net/proofs/artist/061b8535-5a22-4ac1-966e-9f507f61d8fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Little Lullabies for Little People Vol. 1
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 0x9241ea905969513ca138c4ba88c23e0f543f86221fcf53cb139ccb005251f566. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:35Z), 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/QM4DW1564457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22e5a4f85682c90ec2d79b2dad2b83d40b568c8be5641fd160eea1575f24c67. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QM4DW1564458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c587af4eb71881b65967247b7b7731a80c815c6fa63ba49aabb5cbe701900f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM4DW1564459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d2b240f87e7a1165408e66bcd3beccac272d6db848a58440ec1f9938584b49. 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/QM4DW1564470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3ad967ca159c8b5fbc1c5f9dcbf7730f3092a010e940f13dc18058a5f72aad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4DW1564474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb31bd8f931531c0883b45b591be8f6be00ada3324513bf812f28452348a7482. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4DW1564478.
Little Lullabies for Little People, (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83a2054d496942bb5d1cdbcd904610df425aae6173c28599e38f6c42088ff49. 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/QM2PV1521898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2348d571478be36f8273f092ebffcf279e9ede4633d2bdb9f0e0bd24ba4514f. 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/QM2PV1521899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e018336d670965b92c20139b7dd72d9f4f041e9e5f4863ae76db36530aeb1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM2PV1521912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d929cff62f5aef416e362bcc6b12fedf59a4e728eddc75216e7321655434d3b. 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/QM2PV1521915.
Little Lullabies for Little People Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd1760abf159f37b0cf4f7c666ec9d97ce8773da54080c8c9a2747eefaf7af2. 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/GB4GW1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969e05db272d3cfc686c22b8f230c4f0e2ed247e3774bba2539c3e1d023ae7ab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB4GW1900023.
Sweet Dreams (Little Lullabies for Little Angels)