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 0x3b99946ed59d4b665f7969ea890848ac794557f0d832db81448f2cbdbf4d8107. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e361e15b-761b-47b1-9f76-95a0b2ab6a6a.json and https://artists.proofprofile.net/proofs/artist/e361e15b-761b-47b1-9f76-95a0b2ab6a6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soothing Bedtime Music : Harp Lullabies for Babies
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 0x7f25b13f5e00858e62daf96ab91a10b818694286cc6f8bffdec3e2127c4934a2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6H2292220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d194797e928e6b1a9f3a6e70b69b3d6584e92a0d6de048ddb5e402e715293. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6H2292221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73820c946760f2d62e63cb935aa116109431ae7e90bcf9c60ae1da2ffdbe17da. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZK6H2292222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843ef64fa84b50242f547a8bee37eb914bbb5b5d307250cce3e28fe240a7461e. 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/QZK6H2292224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b5021906a9b33a4c4845ca65904aca160568d50cbbb6454b5149f968d06437. 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/QZK6H2292225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846260bb3ed7f1f14e385fbf794913d9503ead9a110e85633b31ed1c3cbc59b5. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:54:55Z), 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/QZK6H2292226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4400d95272bf7b558685094983e0483853f5fb67083b2d211985386d7e858b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:00:57Z), 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/QZK6H2292234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b4d25b92ef7b2598d81112e303b613dbd4e6bc2022296f02be2a1e6b6634aa. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZK6H2292241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b647a22f09f82393d51ccc27da4ece104fe4cd9bbcdfba3f98eb82d9c22c49b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:11Z), 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/QZK6H2292247.
Soothing Bedtime Music : Harp Lullabies For Babies Vol (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72db346d5b48776ad5f263939ae1f1d1ffa3e6c14e36de71de7a9c68ffad295. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNWZ2294441.