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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc707448a339db68e05237c6cdbea5e599e7f6c300794e33f85af75ee3c73113. 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/DKNA22105205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc8c3c2d117ac84b6f9f2ff7a8de474640416910773a40912c2ef2dd49821e. 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/DKNA22105207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd76be5f9f3b80845a395ec6f84aa765cad9a18463dc1769724bd9f2f12cfc4. 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/DKNA22200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a26d65a29a12884c5e7efd6301b4d7e7a249b26cb6674bd00ab6ea07373648. 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/DKNA21705703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d44f43cf5769e6edbf038e21d352011bd2253eb7cd7f004b96d2bca5525f1. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DKNA21705704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc955ae47cad51acf549449bea476fd76b32ea2afbe91a12f13dda571dac1b41. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DKNA21705707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80064d1cfadd7dbe5299c80a4ceb9c03bc512beab8f802c122b1f5a353304c2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKNA21705708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3997c3903a367cc809fd8f28eae91d5b5255c0a46271f04f3482b1bc098532c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DKNA21705711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e868864017ec6580cc1a4bcc8d692cfc94d933c87fe1db4fb79318c0dc7d50. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DKNA21705716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bce004e7149b39ba89997424236e3d26a0c9a6f89667cfdfecd06565213adb. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DKNA21705723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5c08fe767a7e7838fb58233402f91755458f649c8752a41354cf0dd084544. 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/DKNA21909301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb5192232918d8ed7c7fac0eecbd5ab501459deebd71d8b971ea2017d6e531. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DKNA22206213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0ed619847891b2dbd9b7d8169b70d72e1ab777fa1cd465e76d471b79a9136e. 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/DKC991700702.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eb01b3921c421869d7ed40f2c104723c976b5b779d5586ccf38f632afa6a0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKC991700703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd53351d65dfb258a60f7751ea2040744e30253047944a0be0f95dbe95c99063. 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/DKC991700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6259f42808e2aed95ea0dcd9690996bad8c39dbc4bdb932722406123029ce6c4. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DKC991700706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c766d89a9124e465ed186c5588201c159c44ae059f8e1e8c71b5328663d0f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKC991700707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abc1344c2e6775482da63686d7fe3b8d36e88daeb422b4853904f2db330ac7a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DKNA22005507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e424ce86a86a967a1e5a9395d77e76a43185f6f97764a75a2633baaad1b019e. 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/DKNA22402608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b0f946326a50e635812fc2ea38b0b57f00d7723b864d3873e17aec8d24ee4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKNA21007409.