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 0x64689aabbbfd39971d1e5b61c9a7e4b6f5d17a55797433fdab26555f6355cb81. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3460b11-3f9e-4f80-a1c9-083ba407dc2c.json and https://artists.proofprofile.net/proofs/artist/c3460b11-3f9e-4f80-a1c9-083ba407dc2c.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 0x59b601c422da10f470a8ec4b3b8954318a5584f9358ff5ecd758b1f2a812fd3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2443627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49abce6a95d6aa335baafc7472f0c24b08ff5324ed6f2cd17b20403dcdcfafaa. 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/USANG2443629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28926966b84ef3e68a2dccf08fd6d35bd7e1efdbd10b7cc2849842122c3bd8a. 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/USANG2443630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5435aced73ba9418e88454698ecdc82cccd70782cbcad4fc5217348399a31b0. 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/USANG2443633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dde205ac429c1d54ec750f013266c2f6aa69ebde5e3f8de102fb5c1db5e16a. 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/USANG2443634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976523a8a0d7914f46f292196d53284292be0768abd87959ceb1452cbb45b80d. 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/US3DF2477822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ddb8788b9bd30ef68936b027b578fcb76d149e591b0b66996a18e2ce58f38c. 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/US3DF2477806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad517354105ab4b99da1c2b5aa18e7cfc2c285a76a38e0cce4a6a14c5d407429. 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/US3DF2477807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b0853c4d57e04d24fda0e25c16e4d86b4f8bc643c94a9bd5b40c85260bbee8. 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/US3DF2477808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21452c10f95f51cd8fa7be401882773e6c4585bfd4d831a164164d296243b93a. 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/US3DF2477809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951d36d8a91462e3668f1d8007db45d0da44c9228b9149c5826321a29ce0b1a5. 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/US3DF2477814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d43802e1debc75feb4277fc0649b6cba6cda1f37fbc53976df142d0c33c62aa. 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/US3DF2477815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95a3583159166352a380aab5b9d464fbf80eb4629af59fcd0e8c8b9ec29c46. 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/US3DF2477816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbfe61e30d92826567639a3d241bb4ca86c49acafce50bf73cc88085244e660. 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/QZ4JJ1944754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e759216d4673804ac52926ef90d319c983feccce8dcaef76955bfb62838dc0. 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/QZ4JJ1944757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108fb65f85813404cc795d26a102b2cff877b6714c2b387d268ddd0d73509c75. 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/QZ4JJ1944760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583bce6d339a103fcde45dd721109ae36de21dbea13c741db5c2ca0345398be1. 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/QZCE61839903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b72663a634e6f7f64a605433ebc2401c3cd57cfe700743be1785bbf2ec089. 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/QZCE61839904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbef923ba0b63f8c4a0f4aacd96f4a2a9f19fb9620447cddf8d30de515e3939. 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/QZCE61839905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d4732ff7b68b6fda4c0489c1fe565379412a29d608ed263e5dff131d3eaac. 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/QZCE61839907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71141696195fd073385e64e43f1a859468128f6f13db32b9d6e7a992c608d66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:46:14Z), 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/QZCE61839908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb133489b5143450cd24cf39ff3645f1940cc6a8e0c0419e5e45caf2aaf34c054. 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/QZCE61839909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079ff1cc075380360d9f799079e7682b894d65dd68c2831372b8bba86efc3365. 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/USX9P0609415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f070e8a9644f77228bd077baf32c57380eda5c78b03f278a4d378ce7fd2bc86. 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/USX9P0609416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf121e762415fe5bd4a5f3c9749488499cd3179048cf9a0f72c552e3bd3f416c4. 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/USX9P0609417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb321fc1196233f937c44d8020df18e9b5c131232880ef37841b74a45ea989756. 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/USX9P0609420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8c223c4b655c5f7365b4f1605c8f18dd55208f43edde6e1c9506599a4ec1ea. 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/USX9P0609422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b3d329a78db75abe2fb90a148d460458adc7c3c624f9f0f9471e85d891bd42. 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/USX9P0609425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de71f42ac6307ed30eb91e8bd50652cfe140f56f1228f3bc92692fe55452000. 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/USX9P0609426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c04ccf7b86eebd2ea2db37e1217af48e15931b1f77a2c44fbe0763814e40dc9. 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/USA560952944.