1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x36a60771c5438316b2f3bf59cd79e4180f22d9a4ea095ee51fad5b08ae3f4c00. 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/5bda09be-4b52-4bf5-b1a2-c9ba8a0fb94d.json and https://artists.proofprofile.net/proofs/artist/5bda09be-4b52-4bf5-b1a2-c9ba8a0fb94d.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 → block OTSBitcoinBlock must exist at that height 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 0xcc93d2ba11ac0f72dbd4890553c9f4e95e2d29201686711d485eeee5911807a3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:29:37Z), 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/ES51I1100792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e86d7a9251d47097b872594f4d6e82c024b3c3678d308444a5deaeaeff194c. 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/ES51I1100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8f8f62ffb192fb03fe798161b9c7aa94df7b6e1b82e85f59c8ce33944aa8b. 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/ES51I1100797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf614898fbfa79f43a9f121b978c64e9323b423144cd90b27fa2e6168bf54c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES51I1101216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f9bde877383556d99dee7d409ca498873d26c98094a3e88da5cc0438b5aa7b. 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/ES51I1101217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7814f967396c82d3c287e867d97730d5e6604e3a10dca715e5924c40d57640b9. 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/ES51I1101218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd914de1a8f3379f23cfbb18c3e37f6169a3ff86a9f5b6d95586185d283bd74a. 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/ES51I1101222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d715afc0ab2dcb9a1acce39d95e577cd5bd493eb1d8b167bcc5b92be11ecf94. 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/ES51I1101229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28da9b33214ca63939e23581fbe8fdb46127fa397d0ceae008f9593cd90dce3. 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/ES51I1101239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d50b9d9a5dec0793cd4811f5028ca92f9506fdd4f4d3d192508cf973ffaf63. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES51I1101242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc45470afb816b827784d833b1251aefaf529c5ae4ff8838334f628c7d9b5d. 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/ES51I1102389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c0e9c0409d80a22ddf0d0e447dc1f38a8b5be9ce8331b1efc2c6060133e92c. 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/ES51I1102392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e555060502387b96c95b4122fab7233821b7428e6a76c9a7ba9f6dae79461d1. 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/ES51I1102394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea610ee36c46199e9779146e23277f86045a7c505cf5885d379851645d1bb67. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES51I1102432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568c632dd163d3ddf8ab156223577f866675cf6b062402be2a88ec6c12831f67. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES51I1102427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac440b86f2219889f80d46d8326a40976458f1f606d88e3a1f7a3e1b20d9c02. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ES51I1102431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71832655eb58bb5641491eac0e05c7c19b05929a56f0b76edda7bbb7b3d82d2a. 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/ES51I1100648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87e50b8b4a2a388fde74b59da36f93c0e065febaef4eafccd4018099b1d12e0. 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/ES51I1100653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945cbb42d9100600014b96712cb894788958549a936a750eda3fc5df8f057c5. 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/ES51I1100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f86556fa13f5052e5a4c6082ce68767fdfa36a12d41d5a4c42a24ee49d77b4. 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/ES51I1100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecb051c0cf92821891d50c90789b4ae87058a537cc97060e65629be536fe82f. 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/ES51I1100593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00b113a75fd91af9a09241e60f9e8971b9c8bcd201797674ebb75c0878282b. 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/ES51I1100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc5b9a28d0f081ac06db4022ed92440fbe55b850c319ccd53f1bbe9a6f1e2e. 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/ES51I1100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda34bd1494717e96370732294c017795e145280841d2dbf26650a9af2df034f1. 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/ES51I1100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b0160897675402cbfb6b3c6d50bfc4fdd0e2977199516052658d6e1cf1b1bc. 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/ES51I1100613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70cf4a679b075181a4c7e5e4d5e683ac2b80efeec5588ca6f1fe121c2ccd97c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES51I1100533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f570100d937e8971551003679b2cc561de8857f7a7f7d05c4c37060b32dbf7. 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/ES51I1100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa827eb1fdca5fecba8c157a085034fb18aa571822ff5812bf77f828a2fcf5b8f. 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/ES51I1100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb4d43305ec0de3e0ff27b3aba6d3ab0aff9a34e2e6eaa88fe06a0c8f8416e8. 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/ES51I1100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9796d40116e7ab504c929c0c683419dd285af5f2e2f00874acd8811b8382a6c7. 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/ES51I1100563.