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 0xdbb1bd5f7460970900dfb7453859ea7a25ed000a1b5f091f834dde74e2567e0b. 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/7ec9077b-fa7a-420b-a6a3-b39d8d911fee.json and https://artists.proofprofile.net/proofs/artist/7ec9077b-fa7a-420b-a6a3-b39d8d911fee.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 0xbc72bba3124ce1062d3611e91ae2978b66c813969edfe660990a5e7e77f31d10. 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/JPA651703965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f557fcb8ae14040913ae4cee516f3ab47ace51eefda13e022bcca046129069d. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPA651703970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95292b5b7315b096829f7010a8c66ac6b010840ceb8b0236ebc7eb8df88bf93. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:41Z), 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/JPA651703971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f244eae67c21316f18d66105dcc15d26e158ac43e7d35e773d0d767fe7161a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPA651703974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0edf33879b25e15a0e3cf503437a59335dc6bb2059f978df751523ca0f5c51f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPWP01871646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048af53ff4218e752af6828fe379d4304a7f4d2ab92f9aaed6b915245d0219bf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPWP02000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3057d831e8044fd160d5292664b860f8cd47125779a30343707ea2fa654ce4d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:51Z), 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/JPWP02071236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f852408690845c9067c992debd878c2bd5bcf2e287e5d8cc361fb5068b0cc9. 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/JPWP02071237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37135c1ac6cbacbc70dd20d825cf40223da6afe8946f6d5856813a05f7ecabc. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPWP02071235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82073f359a3440840a304661f83304f8c353fe9939af3989614f3c76c4d8a0ae. 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/JPWP02000425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c3a42bdcbd67d8bbc075a3081dd32a52419a25bb01b0a6d6fd5fbb6b44f273. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPWP02071241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048af53ff4218e752af6828fe379d4304a7f4d2ab92f9aaed6b915245d0219bf. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPWP02000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e00d5a409630bf03c448af806f5e03c97e26c723f377ab00e7447074e8e18b5. 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/JPWP02071243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82244126b59d252caef992fa3160587398eae5c5e7825d5bdc8ace466970dc5f. 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/JPWP02000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1cb06c9973e92faead89d142b6f0cf57cdc42fc0fe735cdb62d66d4ccd4a44. 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/JPWP02071238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a6b62d5afcfb51af048c60abd3442d5b07acba00b77d3570dd5ec58151b75. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/JPWP02071240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e958bd3fe2e64cf22f587402b2ab557cdbaf087955bf47640c318fd7a398258. 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/JPWP02071239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf49ba3a016615fcb64a0eccfc05d694a5d45322125949da4e0c5ad358e12b4. 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/JPWP02300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7159b0243f59c24926a0c81806d3769cae3d90d7b1f7c4620518fe13527affb6. 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/JPWP02370143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1075b2fedb51aa07e4e85e8de923b8abd99902007bf1992f8a04386137e5bf76. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPWP02370145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae9428885b74a1d9e8ce344da646a73522f6fe3474b37fddff361b0639fb78f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPWP02370148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644b5182c64f24e72241e3427bc388c45b6aa931955feec39b70d3a36ec152e7. 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/JPWP01901308.