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 0x96a39340e8b432d16e883d41bc8d6810fe65a4ee2faecf73085ca5026e41f71c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb68ec0e-ad84-4e6b-ad4e-77003dd63661.json and https://artists.proofprofile.net/proofs/artist/bb68ec0e-ad84-4e6b-ad4e-77003dd63661.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 0x527ade8e03bb95d5f56a3508940a9fd386de293763d485b9d54752b7147f35ec. 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/GB2LD2210090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4449c52cfd42d3843fec595932d3a09fb1e0e0216f3ebcfa823cdcd3764c51f4. 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/FR2X41941500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2806a7db6e62c92506a51b029aa85571ebbd9a2944ac550f03cb8cdec19fbf. 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/FR96X2299806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feec5f3f77969fd044833eee49420b4f54a9e34a295c6095bf933b1de2e56c0. 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/US39N2302444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba77d9d4f4c790666d96ecfcfd58009cb1457c025da48f7d5526060039d951. 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/US39N2302445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725825faa39845b4b3460fa025f7f7fc4534d1877351373921ac5eefd59d3165. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM24S2301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bce42c2869da306f3897f5a58d500770d60555dd468f162c6af3f198cb7e6. 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/FRX282224516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527ade8e03bb95d5f56a3508940a9fd386de293763d485b9d54752b7147f35ec. 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/GB2LD2210090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba93a567c6ace3a9f0337aa96fa36c620e50e08e50d367f5bad09802da15c3. 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/GB2LD2210104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985abb560fdb9a5b9b72db74115ad67db118ae7d6615e85da48e6acf81c36ccd. 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/GB2LD2210105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c0cad5451556c6d22d88ce3d8a8003793235ea2bbb49bec8b15d39ab5faa44. 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/GB2LD2210103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c0cad5451556c6d22d88ce3d8a8003793235ea2bbb49bec8b15d39ab5faa44. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GB2LD2210103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6db6ce7e8a2f17f1dfac9501e01b36d38c44eb3e6fb1920c9abf974ae76871. 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/AUNV02200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc66a189c459fe316d49c9814327a216fe8232aebd3333e3c6360812716f5ac. 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/FR10S2239035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499751c2e10af71814ffb0a1c02f5431160cffb2e2e1a8ed8dc8dd81d65ec902. 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/FRX452135707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a01762aefe6a7d8e9b417159dbd1263b4c5c482d58ad22fa0f31e8edb4c077. 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/GBKQU2134331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbbab72807fb08590f6a978eaf4ddfa2351ecf3c917ebf8e5101df97234b581. 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/FR2X42112196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b71e7fa7962acd6eb4459d464f8982cd6287794f6953ee58f0ebd0ebe99af1. 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/FRX762013659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd308054e742b004f27b47de91b6ac874f4d8b3e68fb3798dba125d0b5e3f1bb7. 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/QZKDK2025357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93421d5eed255fa3bcbd87ea54cd0d5b550169360ae3f5a3aca5fccced4c4f57. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S2062435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c5da955ab94d0291cec66b81de62b90ba507630878313fff94244acdd03873. 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/QM42K1964317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1754c2a5d6964b80208a00dd5cc619618961f3c5dbcaae77710028c5f86ad. 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/FR2X41988824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c5a8e4af3951f9017e3e7b4d024ad075ee362cfbd1629d37535d33ef9c7c83. 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/FR96X1842910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99592c4a67029a2fbbc88cd5281d3e2a7fa6fbf054866d6494ce2ef26c1f4a93. 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/FR96X1842912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0953ed693a4235d2019c9d9b7d4ae70e70c791acb5ed4f6b102540c477bf1b. 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/FR96X1842913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c22bcdb6931668617d1ed8e947b4312b8c4219b1e0a94fe3c75df6739f1c361. 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/QM42K1786708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690af62d08cd110c8a5c8af01ac80d74d76fcf9d24306550c2f854c4dca8e6c3. 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/GBSMU4171758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c19d06e6e03244d58568803ac26a2139a5aaf61254128f93d21552b591521a. 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/GBSMU4171896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bce42c2869da306f3897f5a58d500770d60555dd468f162c6af3f198cb7e6. 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/FRX282224516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a54540ed4574c0847d69164cc2623be5a08889582614816b6979eed630e7c. 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/FR59R1803539.