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 0xd7661938d27cc74dfa061ed768c35d5aa8953223ab583bf1f09559c042bd41aa. 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/db00959b-b606-4226-86ac-717a4d85ff98.json and https://artists.proofprofile.net/proofs/artist/db00959b-b606-4226-86ac-717a4d85ff98.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 0x028158d8b81fab6e8011d84d671d67c487d44fcb80fac3255ae0d8a85c98e0b0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADQ1834241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6172cdf7a75bf05616bb2e536d3cdb4faea499d55037f6d39b2a6981bcf40a. 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/TCAEH1971808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33454e3fca61a5aa13ca09030153e502508b320d23395cb36d907078cb4312b5. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/TCADZ1827168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c69bc08c0a65f14014f2d726e89b31bb18b03989b0108b3132c8dd4465650e. 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/TCAFZ2292552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605352ab2deb6d0a68dde5ed261043818da1a0dc77d718a976fe03364f8f4aa1. 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/TCAGA2258206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc264915d7c7f66d761ddf42803a6f8b2aaf1a050305d20a741f38772230f3. 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/TCAGA2258227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9297872f6e6c8b7ae4c9d727965b112d87ecf8e2f9c114540b361d21922e76b. 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/TCAGA2258280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9297872f6e6c8b7ae4c9d727965b112d87ecf8e2f9c114540b361d21922e76b. 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/TCAGA2258280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84b2e0a35b68e5b6ffb802732efef4a25d34f34689a39bb4a4b635fcee32010. 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/TCAGA2258308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9ae752e6f0ab757e8c25c160850c050f962af68740bf176ca9036bff786276. 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/TCAGA2258407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083b9a5707df93a4230a23c3e89c6356ea0d90d86d002a4e1d15dd13cca7eeaf. 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/QZMHK2241314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205abeb28ef8d469969038e573b0050822dae1734b136e2fa8a710e085ea3ff. 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/QZMHM2231412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236494e0b62ffc9f11a9d571bc37716015bd711707f5aa1c8714160fb9c41626. 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/QZS672258333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb418846f333477aa9d5e1d4322036a7eb85dedb3693fa63ac064af702b712de. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAGM2270080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58297dcaced617805dc19ebd1739bd3b08e8378f08e81b03c7af83dacef79be. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:15Z), 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/QZES62354484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b49ba3a1d30f7413853184661987c06cda1cf8e1a67f3261b5b16bb8117171. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES92369867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1f0ac10607a49f7420f2c25254a366f5f69bf90c3c99c304fac247f5e6fb15. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:28:42Z), 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/QZES72386254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053a88ba4ed3d3809b3a35db71deafa4b39a6cb9e874debaf14497ba02463fa. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZHN42391510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a190540689acaf7d697fe71cc602e44f14374c9efe4044e1663bd183dee0f37. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:43:57Z), 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/QZTAY2361365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6674da2e22a2b42f202a0c600f328847ab15fcbf114ce0a133c1bfb6479e89. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTAZ2385551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bda5d22b034063521b7d1a07f6182c3d630b9fa7137f45710af0c0888d5a634. 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/QZTB32366062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352a10a592f3f328f89070d03cc6fa6c8152a822517a0800b2549bfb2b6707f0. 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/QZFZ42464580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c817f07821511671cc054eb574fe0f976fe3955587b4d98c356e6385205f6. 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/QZFZ42464583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de681271cf82071d0103ebdfac3322f9892a16fd45a4e17abbe62f51b3de9b. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZFZ42464584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae2f48af29b00a6fcb3a54c50cf79390d364eaff12438e58e144d50bbf66a35. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZPLR2435653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d33389a216cb7c1e8505a2410572a5807702be068a70c54346954da20a122f7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:01Z), 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/QZTB22407529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c24e12f907d9274e7d095e1ada42b2674b7d0b4eee91ab8e08be9e44469e0a0. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:58:14Z), 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/QZTAX2482055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd1e01c434d6825620ed0d247002dc3488ff392c89e6e0ec296129b580daa20. 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/QZTB42442068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d11900055ad8c9e75f472dae8c8ab3cffefe47da402680cba01eddb0981b9f. 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/SE6A92362175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd1e01c434d6825620ed0d247002dc3488ff392c89e6e0ec296129b580daa20. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB42442068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce015838eb84bc57d91544b5dd2b5f09a42ca6148674ff40ffc922beb889f35. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZWFQ2472068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704213339a8248b01037356bbd0305f7da0224311b77e2a6b5da71510bf8f978. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFM2459558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f77859fc4c42bff49ede03a2729cf0067c8f1cad2e10c286f80318ec8ee95c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7U2450503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbac8733d09fb0e54ffd528d249f2d187413baf63f404f216692250f23a9462f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:23Z), 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/QZZ7U2450504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933900a6de35a151734ebedceda2ed60624855c26a96a123495493ebead0ed38. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZES92593397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5ec51fef40bdef3f124af56bd693ba7d970f28e4fc4483d357fea00d06b6b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZDA82594373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b04ba96bd954f9cd41b4bf1ff0c7162374274c14e460e70052c9c8a673944d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:08:41Z), 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/QZTBA2576933.