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 0x4606f732c30ea82158789e6f6f7fc5a041b42940b6af63f5a1c3b10e96395a74. 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/b6224957-8442-4dc9-95a8-65fd5a60a51b.json and https://artists.proofprofile.net/proofs/artist/b6224957-8442-4dc9-95a8-65fd5a60a51b.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 0x01970273cbdac8820c2038bc5e30040212725049ec2e4d28042b832b106964ba. 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/SEYOK1755409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebbc3664f3491df9c312a6d55bd90b1dfe2b036c42d065aa8d600020d6e5f0. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:41:12Z), 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/SEYOK1812922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eba9d5ed1ceff1de6a7d0d43800d62468a90cf8818fac6a6a9912dadadd72ee. 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/SEYOK1812924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf0cec37a1beed967a8ceaaf7457b7c8543737e2754f0b21342ee7708e77445. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:27:58Z), 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/QZFZ22278533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c97a2cf207bb0e1da96129ba9d1ffb66885c06dfb201c1b228cbc817682cf37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB42294008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22ec809b48856383fa56465176a63ad58eeddd1602200f02753cb0c6c2f46e3. 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/QZTBB2256609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a759244e7b95948fc699a2c0295613bff168d8de3ce8efd24076a3672d420c8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:15Z), 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/QZPLR2455676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41083067dc0ec24256a246e11ab9b59ce5e954171e4445b2a09f6b081cd564. 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/QZFYY2532772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2321b5ade70d7dd5ea68f460f7cd4eb143da829304f57dd35152b480a8fb27df. 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/QZRP52379476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823e4f20601cdd15b686ecec041d39244b7be25657120df435e3b0a92e6d2ef6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZDA42538192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c70285b26c676af3eb6e5b671ca87134160620a9fc5d7085ef76e649e63499. 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/QZDA42538193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97fa0ca85511274563fa97c6518cfd9441cafe74cdaf72975b53820feabadb. 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/QZWFM2355982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ae0200560cec3aefdf47d43781eefcb0f00138ee935983946d9904f1f09d4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:10:31Z), 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/QZDA42538195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1355717f64bb63da18e71cd23cb4235f476fc0e10f82c3c41d55b0048ac7a85f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:55:09Z), 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/QZDA42538196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c35a1240ad8f06a5470fc05dc0293e40d903091c29de3c26850602962e1757f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA42538197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4143950317e926505fd41afc662e13051bab89b38ad8684b1efc4b67cef66d9. 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/QZMER2376102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b605c6d011962d36245ded8312b64e2796dacdc8bfa54b6eb0e67c9ea4da4c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2479379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc819c5f1468750fecdb8c5f04a284d4874e4c942a2606149abc0273c4b1b5c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:50:30Z), 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/QZTBD2450255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41083067dc0ec24256a246e11ab9b59ce5e954171e4445b2a09f6b081cd564. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFYY2532772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd604ab43fe3bb1629e577ba3e34beabe39532dc42cd4cb71c42f00dcd780de2e. 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/QZDA42538199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b7c9c384b368efea9b4d614c2f3973649e4315c1e1eb1f36d74327529efd32. 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/QZDA42538200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a759244e7b95948fc699a2c0295613bff168d8de3ce8efd24076a3672d420c8. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:40:11Z), 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/QZPLR2455676.