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 0x12821dd33166ab2e40eb7e18383c1319ce63a9ec491e479d6ccc4b1b7e040f83. 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/e50e0127-2a54-4480-b3ea-cf80ce870c56.json and https://artists.proofprofile.net/proofs/artist/e50e0127-2a54-4480-b3ea-cf80ce870c56.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 0x119ba60f7a5c165625723d743cb0f48f13e5b9dd15139c4f55b019b62941b20f. 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/DKATA1001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290cf1012f11af8b9b75b36399af74c8f3112487be47ae34bbea9d89e34cf960. 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/DKATA1000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678837e662f0738dc22ea8e320088ece6a425d86e37ea314d6918d5798fadfd4. 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/DKATA1002305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb99d27cd01413608c6ef4ba7e4a7182b5128fce9f5fe6c1c77f2bb9a11e6415. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKATA1001206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64e770579cbc3964b57110262752b1dcc045dcd43440d48a324405f2144e71c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKATA1002307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd482dea0ec26329754d08c75bdec1a905b0047992f473f37d20305f196138cb3. 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/DKATA1002309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa9a1ceb781845b197eaaba3a7effeae2bc335b46757fc4fb46104faad65c2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKATA1002311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f70f91b08ce3e8250c84aabf5c70c909a212054645afdcfe794b038d42e0b5. 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/DKATA9400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716a62775d753f8da32015f7090f3c628485c70218c53235a652118f3d430731. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKABA1300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b819178ceccc3910ab45d0db43a869b8f5b76c29b7e5f54a63d80658bd37858. 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/DKABA1300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15308c9bed24de60868a3dc28cea9ec3279bf14b016a03ccd3fc5f2cdbaf595c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DKABA1300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea3b9df3087ccbb9f65937745fce0b3656bc4a7cd16d5672ca167057d838470. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKABA1300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaef08caac5535058f4c6e3b12b07679ad1f6a002ac22c05b9aa91d590ae5bdb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKABA1300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97788cee61251feba367c34fa7ca8dab7fafd34d750761e13e405fc48ddeceb2. 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/DKATA1000811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0191c78a304a42f95b9a3607aa7e13076b4b3efba86b4e6c2282e2b7e2cf4f. 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/DKATA1000815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff91018d48109a3d0bc566b14a61fdf1e5a768a421593c9b0ced0ee44d4b227. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKATA1000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b94ecaf6a765057176189a64a9dc4774480770a37da1bc439ff172737b57c9e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKATA1000507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa9a1ceb781845b197eaaba3a7effeae2bc335b46757fc4fb46104faad65c2a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKATA1002311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec007abc2ca12e34d5c2899e86b9a6bbc3f8f376aee4a09fa15166224cae27e. 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/DKATA0802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b886800c904be62fa6d4235cbdd2f60020d0f08c2e1b7d42f0117ed7eee4e6. 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/DKATA0802002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15089af93a37915e9f5f595f602a7e94d2bd62498ba155481bc8d973922b8cfa. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DKATA0802003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5f722175540bdcc201057d711c36b5a6954d2f8ecea733320d6fef0e5a1e8c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKATA0802008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8d642e19b9f5fffc980f701c6d9895f01ecd124f5411e4f2e0510c4decf70. 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/DKATA0802009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b819178ceccc3910ab45d0db43a869b8f5b76c29b7e5f54a63d80658bd37858. 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/DKABA1300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed59885b7cd785cc3f83c4e3497f6f6d905cc61657850284b3c3032e32f9c6. 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/DKABA1400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9fb4c52b1f87bd0d24bf6cf6827f22a8a791d25e3aff6d4582862a2290da22. 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/DKABA1400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716a62775d753f8da32015f7090f3c628485c70218c53235a652118f3d430731. 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/DKABA1300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72691a85e2b319644f52f4608e9e010843788145facb1414d5157cc8c30a35ad. 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/DKABA1300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15308c9bed24de60868a3dc28cea9ec3279bf14b016a03ccd3fc5f2cdbaf595c. 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/DKABA1300434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea3b9df3087ccbb9f65937745fce0b3656bc4a7cd16d5672ca167057d838470. 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/DKABA1300436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaef08caac5535058f4c6e3b12b07679ad1f6a002ac22c05b9aa91d590ae5bdb. 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/DKABA1300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcee3dcb2895534e4151067a330eecc6d8d1030ff1df4b88f736a338c3435e5c. 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/DKABA1300439.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff34ee742572ee6aa5c24f20d49f5e2bb1ce4ea3e1c7bada0f65649b43fcc57f. 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/DKAZA1400840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5408ccebd64b7b0cdfa3a1af7f3bb4d4f38d18665c4c95e26ae1e121e951b99b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DKA9Z2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2a8676898793943ef2c8f4b002b80b67e1e3c466ff86580b24387950478c6. 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/DKA9Z2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb237b9e49bf4d4a195727681d79798fb753d49d04011c3717f887f94235c1a. 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/DKA9Z2500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28544d784104328dd2199bbeaf34fd14e431015e2a89c7f9a782f226ed5ce405. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:19:30Z), 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/DKA9Z2500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7d29ecdbc5da8f34bcf07fafe54a26eae62570f6eb2fe4b3f7ad9c9f9128f. 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/DKA9Z2500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5055fda75f6b0b9cc4e57279816ce3c6eab59f2f49dc878176265d32d421152. 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/DKA9Z2500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac741fe7c2cf6fe63761d7a629a8b2b1b3265d1d66941ad0d0fdcdf15192838. 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/DK6KA2301401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ca4496983b7a2f6cda42fb286d9ccce8044f3ae77e656ae8525f1c8071c584. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DK6KA2301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d957f294471d60e27b647f5868b8149692b7d45ca8e1d8b7e6d93c95a74c1. 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/DK6KA2301408.