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 0x4a49e6435c14f5873d2ee92af4d3e238ddaa80c4cb91c0c88f931967673c8eea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15435c06-a5b1-49d3-8d16-5a1c262f3d20.json and https://artists.proofprofile.net/proofs/artist/15435c06-a5b1-49d3-8d16-5a1c262f3d20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carpenters Gold (35th Anniversary Edition)
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 0x4e83cc1f574a6d8d9c9af95fdb235abeaf9025d95c15a73ee1a69a1c140c984b. 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/USAM19100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fcdc0bd81cab6145fe3181dc2363b21a536f9c2cb797b353017fa6e0bcdaa2. 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/USAM19100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5169aaeb569444da19fa9639129e0ed198983148e6baab392f6c46f38a49db. 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/USAM10200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df46dc7ebd459f6d1b4756e2aeeb32c7e75b68be54da9361921a95c14866b0. 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/USAM10200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d91c9a79584d676e914aae27c43e78d3bfdfa2d9c19665bba8f5c993331f438. 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/USAM10200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43892981aa47461a62f86b3d48ca627b734a1105b16ed5c962f0251705fccb. 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/USAM10200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b9c9c7faa5e470c7c4569e9928a78461df274b47dbfe668bca78999206f7c. 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/USAM10200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f1f9ec7d4f2156687eef93489e2153f40f25ab2c7894de43c4cb5e18ee841a. 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/USAM10200561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561260320e5d2b8cde1ca64e76d3cad28afe4d593ded0fd09ce3b3dd6d5595d5. 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/USAM10200560.
I Won't Last A Day Without You - 1991 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c47230d2a5762eed872460daabfe56e573ec29b3ff7e4ef46f0c4bffd427a. 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/USAM10200392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fcdc0bd81cab6145fe3181dc2363b21a536f9c2cb797b353017fa6e0bcdaa2. 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/USAM19100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7c47230d2a5762eed872460daabfe56e573ec29b3ff7e4ef46f0c4bffd427a. 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/USAM10200392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dd08fef2abb51fa808cb350f7134d19138ebed3488db86a3dc9ecdc8342417. 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/USAM10200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df46dc7ebd459f6d1b4756e2aeeb32c7e75b68be54da9361921a95c14866b0. 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/USAM10200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43892981aa47461a62f86b3d48ca627b734a1105b16ed5c962f0251705fccb. 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/USAM10200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561260320e5d2b8cde1ca64e76d3cad28afe4d593ded0fd09ce3b3dd6d5595d5. 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/USAM10200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e83cc1f574a6d8d9c9af95fdb235abeaf9025d95c15a73ee1a69a1c140c984b. 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/USAM19100471.