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 0x4483bb4441d8c5b1549a3b095e994b209eab14594acc6b897e8aecea66957bc1. 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/102e4a46-19cd-48cd-9f47-58a3bc90982e.json and https://artists.proofprofile.net/proofs/artist/102e4a46-19cd-48cd-9f47-58a3bc90982e.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 0xd64b84daef6a2a8339142205b1e712737d5e6710d360def46d54d3e6e1f19183. 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/QM4TX2018382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6294cfd2c2037482be72b5ef784b9802f1db52c921964370fad25e50a8370992. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6MZ2081133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f013e8af0caaa3973945c13dec4a458aecfd66bf95a44f187c0692bf728e3c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM6N22049468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe749ecaac53a6a380291683868be81c79b95b62f191c412c804f8bec8668666a. 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/QM6P42001552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3dbb119622edcda4697ab6e7ef907f6f20237d7ebedf99c03636570dd6ee59. 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/QM7282022211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb869667c60f03d8bbce2f069ea333e0fc853bbeeb19815895c21cf7c3cbe03. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMBZ92086082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f5ccd4f3c312b375b40609d9a42bbdef0f19531677ca434d5038f150424ac. 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/QMFME2031168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06342a0bd56d98512a4fe7cf09d78c39e18e547477f27538658ff1a1cca2e133. 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/QM4TW2143263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a73d7d6a567acafbf1db73a94dbcb92e91b3d81f76efb49082fd258d1c02bb. 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/QMFME2171548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7708f9b4d3b73de4ac35289c865075e6f9e7ad1a66af1e13ba182815a258f38. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA72124869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7546468d0358bd7415ffae4d55cf15b963747b08ba7b072230780b692971d51e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:43Z), 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/QM4TW2232188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5b439b118c83a9905889f498f695e004ee70edec1e78547b4d4effe5c53db. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX452236477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8103b8239e3f948f7a74e52543764702ef6071c8cce7ccb47e92c20ccd09b8e0. 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/FRX762220934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb685d5aec6ae4cf0174d57958307ae3c66e416d5960c28c88ef6222b98937383. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FRX452236475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb177a3ee7e2f223012ff6b56c738dd4b5fed9543ae76b6c384bb543467537c49. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX452236476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a5b439b118c83a9905889f498f695e004ee70edec1e78547b4d4effe5c53db. 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/FRX452236477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d368cbed4494422dced554efad4adcfd7b1b7e98c7b45125ef94eef6d9e97b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX452236478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8419343180598f61d0bc52a0460666058b0a4dafa90b0c7670c599ab6092df. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/FRX452236479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8103b8239e3f948f7a74e52543764702ef6071c8cce7ccb47e92c20ccd09b8e0. 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/FRX762220934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf845618147b78506f222c4eac02055f5bf53fac1214da428b864d23f4bf08fc9. 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/FRX762220939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cce28c8328ed7dc93a1b5baf7a583792185d6f88d7eadd651c9e86eddeb3f8. 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/RUAGW2300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661441718cd9e0ab956330000130ee8067aaf30960e430ee45bf8ceceb51d040. 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/RUAGW2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeaa66b7d5df536fae0b0364130b4816734ab4bc514aad52b0296b90f8229fd. 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/RUAGW2400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe288b8b97996a861ccd08fb17aaad4f41a135a1e3532642b00c35c7112274ee9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGW2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68388944b6b612f241602d249dc5a840d97b99455dcd7922345329ebf5deba61. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUAGW2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803fe21740e0a88517c62ec80b2ba17b345fd74fc5193aa6cfe514a50a6fd7c. 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/RUAGW2502101.