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 0xc87d27db9a40aa2a0cab46671032f7572c77dbc6b282254421899cfa942b0e9a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5dda831-b41a-49b8-974e-837eb2275e2c.json and https://artists.proofprofile.net/proofs/artist/d5dda831-b41a-49b8-974e-837eb2275e2c.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 0x9ceb085061fedb40a4fc5bdbc7918a097427493270abeff89e7b44ca68ef028e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:58Z), 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/TCJPI1961432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281e96f1d692be809c253d95f8e2a92eb9e9289e5841d63782b39a6f98713fe. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCJPI1961438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afe9c1afed395022ceb63f355d85f4bb57130e94ec8459e349955b079044084. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:01:22Z), 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/QZ8LD1750274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3709811d47509b88742bbfbb3885524c52f20ee9259cc6c857af165db8b134. 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/TCJPI1961113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe249159ffeaa4a2c65f444dc1914518a254e703c93c1eb01daacd0e71f8ea80a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCJPI1961110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c314364da73386a3d6a42df35745eba24da0f3987fc5739d77a830a2e2e8a7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCJPI1961112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1fae3bff5c7789a95117091e0e2e68abce4a116144f7598cc243047eb4acad. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPI1961114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db2a666bf8a810703330881627f24abbf7d433be3d5f76078a0cd818ce5af3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPI1961115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60174abb40cf3e7157ff66f2a68c902bcd295c767a943adff4c4f60d2da48e2a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:32:26Z), 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/TCJPQ2125069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ae8972eefe41852cdf3e1c4f5831e3e40e4a41552f6c4ed3fe9afbc2cd023d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:54:14Z), 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/TCJPQ2125068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce071afbbf94ae3647c230672e39f04d05f0c4d50c73ac25cb86a649b2c06e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:47Z), 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/TCJPC2487156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53ea50d9cb04e5017b12819b94124f246e0557d5ef04142b8717500a69ef46a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPI2547071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfeac249547ff7664c03d1ab1cba6f74c594b4489c40aec65a491aa12d939c7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:58:42Z), 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/TCJPI2547075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45621b1a55e7f4105d55b095781c0172fa72e0c5b292d88b94abb8133fbc52. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:58:26Z), 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/TCJPI2538399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f24ae7849fa0443595f69fbabe6025135cdca87cd9dfbdec68c8d4d2bb7d73. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPI2547078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5615ec78da1f6f076b0b1c39cd9adb833f6a7338e578e698feb2bf8c5bc935a2. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:09:23Z), 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/TCJPI2547082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53ea50d9cb04e5017b12819b94124f246e0557d5ef04142b8717500a69ef46a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:11Z), 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/TCJPI2547071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce071afbbf94ae3647c230672e39f04d05f0c4d50c73ac25cb86a649b2c06e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPC2487156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f4503aa1a0c022bdebbca6c1ce7d01c5d2078fc02898ca37eab8886596701. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPB2486958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfeac249547ff7664c03d1ab1cba6f74c594b4489c40aec65a491aa12d939c7. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCJPI2547075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45621b1a55e7f4105d55b095781c0172fa72e0c5b292d88b94abb8133fbc52. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCJPI2538399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f24ae7849fa0443595f69fbabe6025135cdca87cd9dfbdec68c8d4d2bb7d73. 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/TCJPI2547078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e1a3f65080756127e72b8275252c8840009aa432fc37814288ac6173d4846c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPI2547080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5615ec78da1f6f076b0b1c39cd9adb833f6a7338e578e698feb2bf8c5bc935a2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPI2547082.