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 0xa0abe884f020646f8ff400e040518f5e93cea51203832b3e69164f27526a6caa. 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/458a91f1-a5ba-4a8f-8461-5d3c98cc2cf2.json and https://artists.proofprofile.net/proofs/artist/458a91f1-a5ba-4a8f-8461-5d3c98cc2cf2.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 0x231834940aa4bcc15237f80fa49be7a5b8d5330144fb1455d8ebc68a8dc078d7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IDA191301353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c7993ed0cda4bdc6f882966c55bec81cccd09a2bbb44b63b5431a454a6692. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:05Z), 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/IDA191301354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2919730a0ad5d5e03edf7aebc1a864578615a9f1d851d5f1d0ca889ead5b7856. 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/IDA191301352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf0fea3aac543dfe9d9529bcce27dd169ae6debad957b3a320b0dc3b055bd5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/IDA191402388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510dbf850ac4986461bc5757878d21900434f941f232df9d64304f2aae02f866. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/IDA191402389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0692c45a9312fbfb9a8e2c8519f26505bcb0bf2785a78e47a7de87c4192e5d1. 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/IDA191402392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8f6b53e36f0b05a1de6aadd81450c7729d84adff2809f5ee550087ea27d72. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/IDA191402393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd18e57a699bf07289971f61d0ac8ef0511116b5118466594cced1defd4e28. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IDA191903406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1918cd92a874eecaf48676b821e2e751cf6687a5a2233862eb8ab57695c99cb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:24Z), 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/IDA191903408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638839f695e9947c3a9062cc52fcf3d886a313bfbe706daa1986327a8574d49c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/IDA192003558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2102cd3a7f176a5d96dbfee2421faf7a335f55f38c09e1e36f656de46febc83d. 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/IDA192103699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7be2572de4a457a5707ca337f4e41888658f07b768afa8cd4233f48a6d2acd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:24:20Z), 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/IDA192303855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279537177bc4474fb1a255ed67a905dd2959daf3133fe6cb4c3ca6a8fc9f1ea9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDA192403876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce78ec34c625efca1602cac640d975242804365dddb58bdac7d006c7a377c2a9. 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/IDA192403906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1918cd92a874eecaf48676b821e2e751cf6687a5a2233862eb8ab57695c99cb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/IDA191903408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cdcdf0e7b5950f057bf897d93abbc1a3436157fc02c71ea95466d2bec29206. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/IDA192403907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd18e57a699bf07289971f61d0ac8ef0511116b5118466594cced1defd4e28. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IDA191903406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8518243afd69c22ef792bf66a4286e7a5f4052bcff88efc418a73b44be668d66. 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/IDA102300587.