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 0xc1fc0b82229935e79610535cfd4d86fd024f6fc759b244acc2eaa9eea11d896d. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dba2f8f2-a1d3-4a1b-8331-1fe93bbb0ce3.json and https://artists.proofprofile.net/proofs/artist/dba2f8f2-a1d3-4a1b-8331-1fe93bbb0ce3.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 0xe8844eb5e2635e86ee3f1e56d5ff0e005b9b3169d652b9b50ae7f195bf05cfb9. 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/QZHNB2187796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feedcba73b1e7e4a9dc9fd20ff13d0f0d311053b101186381e9f84627217981. 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/BEUM72200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a6e93706a1cde7146bbfaa8c23258faad58f5fce88d97b5e186df6490f70fe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEUM72100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77d0dd0a5d7cd0b2cf51d1676db2c6af604e04a3e25e7a8af35a9b04b33ce0c. 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/BEUM72300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ca6949e7cc68aadc7a948cac8961eb552edf2c9250901d005c450889a9febb. 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/FRUM71900643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5401aac86d322ca17fadc0f163a975648a15af3072ddca1d4002ddd170e809. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEEJ11900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f713cf2f3530dbe8c2ff5d744ccb710b636c7fc5b208dabf4440d34d97ff473. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEEO72200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a632701aafb22e40de0132c3c81774f4c8053ab961b146e9833d12925e218e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEEJ12100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10229b60433accf94f3786e1000b028fda50c3527b2aa789bf6c037f0f5f5b94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BE5EO1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c626d6311e92b215580ca94c93e6f4f3a82370cbd9a7bbc7e6e3f852e58c7a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRUM72100804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad1925148301ae2b2f572b3a439e1ba0fc8f4d519434e4813764b7d43993c3e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEEO71800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee71bbd4e8508633fd56a67d4f53f1d4c3728898e26e932e7e19f107180268. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLG661500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4214e65eba88a7ef2b337081fe75dfb57988f964bab921edce32e66aaf8e1. 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/BEUM72200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e31e70598939c323ef2f2a5b9f239073989b82a9df05686dd29f83466b5e72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLG661700613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df515c529ecd99eec19faa5745e524a5cab40b3c628c777480505d7c67c1ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6N2161786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11e6b23f8f9eed462180de6799a4ad4b82538d689be10dd9f8c9764f4cfa391. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2115285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a388c46f5b196ebc0fce70fdb6e630576a336d6ba62c8776650a75a1500dc88. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6M2115286.