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 0xeba8a209cf8dba1bab00fbf89b569edc357bc956520ac8afda2d66cf628eb4a8. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/884cc8a2-4d76-46eb-a4fb-79974bb83766.json and https://artists.proofprofile.net/proofs/artist/884cc8a2-4d76-46eb-a4fb-79974bb83766.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Texas Takeover Dallas Edition Part 4
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 0x9b86172c1bcc26d657f249cc3ca6e3e33d434f95580978839a15b032062d47fd. 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/USAE81134683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e00d2e46100cf47f5b3e3823b5210189898fd626768e070fa4c50c2c1046a1. 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/USAE81134686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b84c90828223a88759977d07cffbd781a89633e27dd4687d276b0acfc442a6. 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/USAE81134687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e33b378b5ea4b6a64c8068ad245131e5dad5752b569b8a326a08dc3ef3c4f6. 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/USAE81134690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52b0f8c9a30b45f940e845c9cf46ff38e5ba27c04388f2564ee79f468b22bdb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USAE81134679.
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 0x710156d7e6ecf2f40d6ad7be0cb47194ece38a8427d9b24b462724e51bee4527. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USAE81134689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67147b9af535338c8422bbb2c66b9c36c2700195407ee882710165f8f32802c2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USAE81134859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3a304d06a4b02151450a9d9aca4ddab91c2bc0814db99ec412b61af8cec59f. 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/USAE81143072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf2627ba798641a4835f49dfb39396dbf52d12929f6ce11df2dea85bebfec8. 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/USAE81143074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1105f3227135d17e81398aa635790a9b01c5972dbcbd6b0230933c74f7bb220. 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/USAE81143077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef047426bde2335eaa6c2b38de71b059ff51dfa19d755cd20c00b2fb3030383a. 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/USAE81143079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f7259a39a25fee8099b57be2f58c088205c6905e2d8195ffb8fa7fe8b763e6. 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/USAE81143081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383516a9d2d74b548851dec926bb9d424cb81c241d8a19f835981b00a3baa7be. 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/USAE81143082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf9f3ca8df16cc86492fcca16ddab50b06d32ea539b11a723e820253465a2b6. 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/USAE81143083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439a31496c273ee917423fcaf83925733dd8dea589a864402a36b3c2dac9904d. 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/USAE81143090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59824736610ac4682de576de26b5e5784a35829932529128eca4bc619f9063b4. 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/USAE81143071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaa5fb097e0cf97a48fbf83c8edb54d99b9ac08a37e9fac90d80bf2fe2d2806. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USAE81143073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c6433e51e70e75b71f8309b79b6b67c01ba30934c5876e6d67ac72fc388c5. 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/USAE81500526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6653282d9a031b57ac290397d97484651e610daa3985d1480070ae90c77292. 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/USAE81500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82465f85d7cb6bc94d3be94c4f8c2341db7c1edf92e0697012dfc5aa3e753227. 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/USAE81500533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0197e184b6713d82326cc44035d0c1256f728743e6b0e237106a548e9a1c7ecb. 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/USAE81500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5138d74351c39a08c93b06c2e2d4cb43cd38abbd0bf4995b04ef1bfca318b. 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/USAE81500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ea87f0881cfef1b4999735e239f4104f1b3fc370f229e2800a6218c5d48f4d. 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/USAE81500542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4fb509971be3ec50301861a030258800d178167f615fb1bd86c754bbe0d16f. 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/USAE81500545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ee905a65b6cddb42787169adbf25ff4f127a99debb14bfe2325a989764f93b. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USAE81500523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6087190bd3e4a64e1f51dccae0b85f2ffffd27484bd75325223089fd59e281ba. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAE81500525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40c1606f504ede5d9827e6ad523d7132a4098713d6701b48dc2cf5d8de32431. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USAE81500527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05840362ebf9f0d9dca2d3d1a4d93fd0d8db613bf0db7b68931b1afcdb5b271d. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USAE81500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8c345660809bb79a20828a9ada6df0c5150e221c7ccac0a9f51f15ddc34970. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USAE81500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d037495c7bc3e1494aec967c4fc464a5d0e9f86b622129eb628a558ca3a1648. 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/USAE81029353.