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 0x7bbd799e69f813eb873f559bcf7b6d3f839538ddbe0795bb53c1ce339f3a9d8d. 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/77ececa4-1547-43ce-ae31-31ab61720ee9.json and https://artists.proofprofile.net/proofs/artist/77ececa4-1547-43ce-ae31-31ab61720ee9.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 0x1a63e19705c61a866f022da8d04c84928ae71df677ba5e4e750b1c95661bb454. 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/QZTAT2248715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63e19705c61a866f022da8d04c84928ae71df677ba5e4e750b1c95661bb454. 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/QZTAT2248715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768af05a68d83f97abee368d97d62f90ae33095bf63e736c7d66fbc136fab386. 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/QZDA82397879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e4716b58408af0665e586c7e8146383127b1f971c001b6767b22794443b8f. 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/QZNWQ2359169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370691ba81fdd46f4999d789f4cdd7f811bb9630e18365ae1a8cc98e3af9e49c. 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/QZTAZ2396726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e7bb5b555cffa7f55d37ce6cd08e75a8068aab54b12dca60c0d195a20adba. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAZ2396727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01356ee9e3ba471f4e464157dd3223d2a97b8be57e49bf0b01336227c88f6d77. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRP42379160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1136581b08930da7b0d321850540f7b71b0b077414a06b1f8d88e3f7ded55d86. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTAZ2396728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d1ac701331b49c52445ca0ef9ed3cbca5b2f771cdf92231d0de2da861b7e88. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:08Z), 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/QZRP42379161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c384a4e2ae5370ce0fde320d55a82a4b4241366f077e46d5b082f691ed7560d. 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/QZK6N2350043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6dcb71f6c7d0517c808f326632df4b194addbde73a4b1b23c3d35a5e4018e7. 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/QZTAZ2396723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71039fbf56b3b33d244e379dbe1b60150741579725544ba5cacc3355292cd0fc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAZ2396724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c384a4e2ae5370ce0fde320d55a82a4b4241366f077e46d5b082f691ed7560d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6N2350043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb562fed123a7bd8f20a461e4a6d592a9fcc927654981929012dd770f60ac3ef5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:52Z), 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/QZFZ32494932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb562fed123a7bd8f20a461e4a6d592a9fcc927654981929012dd770f60ac3ef5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFZ32494932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8998db20a53be220d9521ecba4d06714f651954908fe3421c385909112d11. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:42Z), 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/QZMEQ2477009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc912bc09684dd871df699d1d03a9e0ed8a0232ebddda7f3c686b34479fc727. 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/QZRP52424655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8998db20a53be220d9521ecba4d06714f651954908fe3421c385909112d11. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZMEQ2477009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc912bc09684dd871df699d1d03a9e0ed8a0232ebddda7f3c686b34479fc727. 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/QZRP52424655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d5369da72bdfa24ff9b6769d8f89a4e0eef7c439717f2b225ecf52ed86146f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:48Z), 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/QZWFS2457159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd49df7f3b12f7dad40881324b8b5a715af6aac9a55c62503b770cb5be08f44. 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/QZWFS2457163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1beeca919eba031ed4d3c7cc6f5e056a750d86d43e3e3b74dee6db237cc6638. 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/QZWFS2457165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0cb297c18e65016ad6932982eb0fdf41706495b01a0ebcb29c27235265a16b. 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/QZWFS2457166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5652ab34bcc3d731921a68280a5fbeb10cbe84ac11e81b65d91580558fd7a1. 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/QZZ7V2428865.