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 0xd331af6cf0a5d19e2dcd212739539719ada7576196daf5e39fe3b09041801fbb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/514caf66-ae03-45c5-acd6-be19d8ae7224.json and https://artists.proofprofile.net/proofs/artist/514caf66-ae03-45c5-acd6-be19d8ae7224.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 0x7750d8365190d3903d1ee39758e4bf1a9adb96e2dd6f02915ee77cd494b0599b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAW2332892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d239c579c71d9695665d2bc36b09ea0d83162d90deb37a0b742808a8159ad. 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/QZTAW2332896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e94d8b1f24e1fcec13bc2abc9630aa63e8c237528a0ef3c6c61e2c4964ead6. 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/QZK6G2265218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bd41814bb5cf26cdf63f29c206ae00019674f9b8c27f3ec3b2a8ee89010784. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTAW2370485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb20ccbbc4dd7927e9d3e61359a20537a4f76c86ee171c4546848fcf5f1174. 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/QZES82407527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4c6c06544756f9aceef5cbe50b3d0c3a15d8b9cf0918cbaa2121b7e6db0640. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHN92437639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c155c41f33c12d3515e2df863d1e99299831bf2dbebec235ba1d0b0eb64fb03. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:40Z), 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/QZWFV2464739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36450aa312300d2854d56c36f70057a6bc57e6b4f04d6465571453db9768136e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZWFW2462701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891bee383b4b7f5da41fdcc6bc5c8d5ace53f911b5bdcb236cb591c6ee9e6813. 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/QZES52558543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd7dd6a2f26ac844a3855575a9f8d07f1369caee6eb4ead6d04182c90ecda66. 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/QZHN42534362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bb46349c2c329141b0de72e71a5ead10043359ec8fced84d1a7908f59225f5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHNC2534410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca8b4b8de0d872240fc7612fcda8bb2c153d0dfe6c64bf7134126e7630cf4e0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:16Z), 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/QZK6L2581103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030e49e331a1934317dad0b4b6960854636e2234dc878b1051a052c72e1c49e3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6H2554044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ca13a7f88cf489a68d103d0d3db4f39ca967483be88f31d07d7014dfbd31a4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6H2554046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42e10efd405bf1353acda26e66ab1681f67296ab7b09d9e305d9a2aadaee76. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:29Z), 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/QZK6H2554047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fb4ebbce2fd96bbc7d4051394be8f23eb31c823781296b5904f7819ade0d20. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:14Z), 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/QZK6H2554048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ad143ab8b8066c97e295580c1c70fee9092b2b5e97c6a14e0aa53f7937cbd8. 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/QZNWR2536053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a5e2007f6d8699742356dc51a9f271a40d360e57392b336aa51c4b1a0135ca. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTAU2501530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c77130bb7132b836106213aa4bb98ae01541e27a115938ffcf7b3cd2da108. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7W2501905.