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 0x95caec0a9b07bd9c1ce1018b02659a4fed72000e997a8e787b791eea5eb56e5e. 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/32da3f2a-75d8-4810-985b-68ea7d5bd0a6.json and https://artists.proofprofile.net/proofs/artist/32da3f2a-75d8-4810-985b-68ea7d5bd0a6.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 0xcefd5132b3d28da55059c634d677319a3c58a70e72dd81c0a7b3ebdc7683e30d. 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/SE6QE2395384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31260ccc8f06e02ef7f7dbc54763863d4fd8898e465331d3eda888ed90b07db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWQ2165779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50073f15ac312914de1cde23ef05b02ed9cd76f080e1483343fd53320aaa2c8. 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/QZHN82021895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9d8be664dbb850e5c0c214abd7dd6114996a28e5758fd9d372f306d16e00a6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES52011884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f0cff42c6f31e87383bd41634cb6b59220448aa33dfa904fde4e67d0d96cf4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN42004669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d7102a096eb034d7ce2188257e811fdfe3b0107a073f70205bf586b041d48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN82021896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acb3e5c03f766492b56ce95c5e889c12c278e80d74c64dce280d3983a31d37b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN82021897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aaa9a3e15bd93b8a259b203588fe38264f12aac5280c849578c577551922ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADU1826310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96f76b2bc706611f0e9dd232ebab7407e0b92613406748bbac50d15151d9a44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAID2403918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264078106ca46cf598d27dcf1e315a63b089a84d4784af0de91c51d80bad5bc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:25:29Z), 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/TCAID2479164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdc48735fc8ce68044da032e9bdc4977bfda1da79915f1ef5078f5379ea6ae8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUGBT2360748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22163bdba224f238171e5149ad9cb26665b015d21d7a94eb03b98bf8ff5ae94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2322253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97a1b3522ed4d81de38c0a73af2598054d1241e45eab8d5af47279d3fc0015. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEQ2397702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeb8c753b4e70f24e111d1f6d07668a51ca1d18c1bd9fbbabc618c60936520e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES82372333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d17eb64c685195fcbf08ae81606807fd899c88a3429e745bd1a7b5c764c5315. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGJ2210298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12a48aecdf1062cfb565a1d90cc44ca0198bfedfc42f1c065c507eb6f5ba877. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZES82242397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b35ae777865778ff71049fcff04e8164b41d2b2418b2ab7c447d7016d25bea5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX53U2093702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc781bcf11d549473b99fc41930c1ebccce26c55c09699a1f6e59dc7b542eb4dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMER2167756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e2d5fe9c435dfd62d273876bb4d4ed31e7d1dbc1a6c3224ed25a347484c74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2137872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f0cff42c6f31e87383bd41634cb6b59220448aa33dfa904fde4e67d0d96cf4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN42004669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9d8be664dbb850e5c0c214abd7dd6114996a28e5758fd9d372f306d16e00a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES52011884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f881f30dfac859122a287a74c68f3ae6c1327c798c364f07a190bca6685bf1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2080834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328bac7706f209fc3c57bcf973c61e60b49ce8a4be1494c68d4d8c0b979ef283. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEM1919077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f166b04f4844ffdaab7f2bcd98263ff6427c574310dee22655cc3d0056ae75. 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/TCAEH1999373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7030d82e1cfe76934d7d9accefaeb8f3d77000ce44b5881def51f2c4bd8acf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAED1963238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6ac31d9bf459c3329da6401e659ddbb8b2364c2feaf0e988dd420a7e455a61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEB1910644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aaa9a3e15bd93b8a259b203588fe38264f12aac5280c849578c577551922ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADU1826310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc59275c67d3cf7ebd2d73c5c9d245c3166edca29d79bbb6e7477bcabadd5fbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADS1859076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7575a0bda4e64e4c154f834c178d84903ecdcc669447f318f19c57201eb2a010. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUMEV2432211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87e877e3f4abea92b545bf441427ee7a0de5cdbd390ad375846009f3b461344. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6I32388997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31260ccc8f06e02ef7f7dbc54763863d4fd8898e465331d3eda888ed90b07db. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWQ2165779.