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 0x49fd43f9bffeb7c179943457aa125d91a828fde11bdb052d74cfd6169395356d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/464830a6-f2cc-4376-b1fe-863e0210cd22.json and https://artists.proofprofile.net/proofs/artist/464830a6-f2cc-4376-b1fe-863e0210cd22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic Jazz Piano for a Gentle Background
Classic Jazz Songs for Relaxing Morning Coffee Vibes
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 0x7ddb37a48083d65a792d5b660e675f3792e47a6c4486a425b15323457c93cc9c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:54Z), 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/BGA472341733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67a3af48063dc85d8c5a1a0e79763a374cff073cbda373000d92e3cf5e714f. 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/BGA472341735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f048e5a366ea1d8d2761fcd503ac7e58af91f772ad0e394a0b712b872bceea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BGA472341736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ef9ad4c1ea6d31ef6371db2cd61cf74eca48d29ed0248a112e5503651e196. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BGA472341737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bcd3ab892526d881d3318d5b4ba9923035174027ea7f99e068cc1236e6bd3c. 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/BGA472341738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fae62372cd1871adf0870a16afcad93d3ced6179e7a17ed5ee8ba9dd13bb7d. 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/BGA472341739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec99f9dfde59b153131cc3bae62b3bbd9570c67b553f59a09a763cce9fa31f1d. 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/BGA472341741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bb8fbda380637c9ff68bc6ecff812fc2d6c9bc1db183f7765cb06ac22fe007. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/BGA472341744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa772fed1997d82badc6f72dea7956ce8f91adf79e5657f7a0cf82be4691e51d7. 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/BGA472341745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc326ce1822980c92adfd50e10f78cfcffc9a612468b1c6e0b6b9b80037f9c926. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGA472341746.