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 0xb74c18f5b4858d6cfa0b4ae03b106af2145e8b9b6eabc2ce9d97042ea3e2c54d. 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/118b065e-8c41-448b-9185-8750bf78dd66.json and https://artists.proofprofile.net/proofs/artist/118b065e-8c41-448b-9185-8750bf78dd66.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 0x655eae97a0a1e32e91a782481ccbb8b90e63c0f5f03c03ebd0e26e137c5c4759. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBSMU3611180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb171b63cf92f4b2821e1a76f394056b748fc32e4572aa78d1e653d3886dd53. 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/GBSMU3611181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af9747bf9576a0b7c8a42d9feb5f96a34873111f7f9512dccafd030a6f093f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBSMU3611182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e739077c71664734d921e4b3e2edafdf434aaa74124a4af5fcd6641bc975e75. 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/GBSMU3611183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3f3504e90780270f40b072f97768fcd1adede2de2f8a9de86451c7f594d9cd. 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/GBSMU3611184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3a8fad0099d83ad49441caf6b72dcaaba138e2a6d3721e396cf2792a3d2167. 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/GBSMU3611185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbc04e6db48c313b54fe8351340aa2868609f1efb837163704758ac41b546c5. 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/GBSMU3611186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf555f8e4881fe0958cc19d011a9efc252a05f888121fab86cd445cc176451bfe. 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/GBSMU3611187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9213bfdbd2d70e5997fceaf01ea0004de82755eb170fcf53ab5edf40a81feb26. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBSMU3611188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e90f8a2adbcdde075d1ae7d829c89b15af0e77803e8e366cbf6ab5212358d74. 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/GBSMU3611189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dbecc35b7a214940392005052adc33bad207800b213d01e73766216de9a3c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBSMU3613159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268d9ee7f3ff29682b4e2c3b115d53de7aa5ff915abafa87582b60200829da5. 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/GBSMU3613160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43368693a1cda4bfaabcf0235a30b8826e3ab6f46e04cac0db69fa5474869cde. 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/TCADI1760834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efe6daba58b1fabd3127b225e7b81a8f3c2217008316a40d67ef2c62299478. 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/TCADI1760835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f97ca0db93fbf6166b45fc4841d981bbc754428cb1f497e6f74739ddbebb9. 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/TCADI1760836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf5287cafc27e86b2918d1f6fe39ce9e28f1be6d129ccf72656e940ec9fc1c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADI1760837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c2e795e0a57f4909a23b99428bb8c829e0fe956ff9c6b240a588d0004aef01. 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/TCADI1760838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6071991c601f72b229b21b361ef1989f75dfcfc71020f45d8009fc9c701d8. 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/TCADI1760839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579d1d87cdae756349ebf4b1ab91a8d8b0d9cb9da614209b275b5f46d77b15c. 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/TCADI1760840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6b2263aac2044a0683bfc6f1638c06d76da882a150344b6093a78cba18c9f. 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/TCADI1760842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab5648c1a1c1a7d68ac2bae9c791840e6b00950fcc81a8b5851f03c05d19baf. 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/TCADI1760843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779655d9268a30777a067ee374bcd38c61c1b501518ef7ab244c3fdd02fb5a8f. 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/TCADI1760844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b58639c3638afe21d2d435d9a40ad14ed2f492b2e745367f6aefa32ff733f8. 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/TCADI1760851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf9114d8d884f0045d6371794863f765fd64997e062e1999524561e33e4d24f. 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/TCADI1760846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eced9a197b635f038d1c1674d6369b80ac63eda28cb453ef0ccceac53482c8. 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/TCADI1760847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c93a012190f20f5d86ecbac2d5367baadb2faf03e55dbf27801cdd19f4dfcc. 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/TCADI1760849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b5db4a4bc49650b2c9108dc943d9e7ea48cce1ffd52f1a68cbaa471777c2c. 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/TCACW1788023.