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 0x9287626f80f7ee4b1632c3b0c69dbb7909d1c3c5a842722701e4ef219d81447c. 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/24cb1979-4673-490b-b55e-eddb1fbdf4ca.json and https://artists.proofprofile.net/proofs/artist/24cb1979-4673-490b-b55e-eddb1fbdf4ca.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 0xe96f1809317fca0b620f2276f7f74c09629c264e4b8b42d43382c4d8e1d2c38a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH5171000846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64599f32f5f2a3c77e502e981f41d3a6d65e22834055eaa7e98138fd27bd6cd5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH5171200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ffc5889b6eb3fd0acd61a58133f4596265cc4db2f7fc27ef057bb0942d62d6. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CH5171400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d786f0cb1c936d705956ab1c8f4ebacdfb0f84d10cc24490aaf49accc334d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CHA011600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54036010556ba6eeb7e62859310a0ada0fa27e1c6e2998f080011d980692f2e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CHA011900774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ea26d1e753b027ac00a52bb2c417d1eb4c5301b7f3baa7c1c5cd44c2aa613f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CHA012300965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a616115828f09ac741710d62c5e849561cd5b11c7805e0b76a301edcd7dd82e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CHA012300966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb7d0c0e4dbacdbfa679deea0cb11613865b5518e41c2207d8e8a583c1e12e4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:39Z), 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/CHA012300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b538ee525d5f66b530e7d1c0b9d65bf71cf63be0ca5db6ebded45e103f7046. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CHA012300968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320c67f0c97a253e8874847ea138e0d4b1f799d015e9751d27f292505112ede. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CHA012300956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0494078f4638db9bc096de33c207346d0e770f4a5030e4189b723a359e2b47b7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/CHA012300969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78accd6d52e3ef824d77b97a05aed7c20c00d4083a3e4ced941b9cd8c4c708fa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CHA012300970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b320e556cd555d5a8c56e93dcae1c019ac31e2b69f257221fc20917c46ef34. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CHA012300975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f913ce1816c7d4112c1e9f59998abe362de0cce3d5c1c9dc0f3b78ecce9529. 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/CH4062401742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6099ef14c1e4c838eefe822daac59a8acd239c497a2723a2cc06719a5f092d. 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/CH4062301730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6099ef14c1e4c838eefe822daac59a8acd239c497a2723a2cc06719a5f092d. 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/CH4062301730.
Electro Swing 8 by Bart&Baker: The Best Electronic Jazz Swing Music Selection (with Jazz Radio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3aa36541cd4156f6e3bbe198c7e45b84876f73737e57c757b574548406f5ab. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR6F31532290.
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