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 0x68613efdcb0d3ab35b2085d2b3bf182a2d2a946b69b1680f1ca3b84810bacabb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae3cb4cb-4dea-4388-afee-944f176f586c.json and https://artists.proofprofile.net/proofs/artist/ae3cb4cb-4dea-4388-afee-944f176f586c.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 0xa26da76e781d7964ff1e6bbfd88e97d57d97875c35d8d07aff6519d643b75d77. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA621401038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2dbff2a265abb39af7c48f097ad34b2a62ea626e1be1aa47ed4e17b6a1aaf8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEA621500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffc6ffeb752c154080f4a98c7a52985314bc6f0031da7ad13d74bfec276614b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEA621500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71aa745c03c63b5e2e323ac57752c08eb1792b27f802620ef962a6133af96dd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEA621401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b2f5b1818fc915135750cbf0eda2c8246eda4c3cd1b35e37be532cfcd17d03. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEA621500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffc6ffeb752c154080f4a98c7a52985314bc6f0031da7ad13d74bfec276614b. 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/DEA621500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71aa745c03c63b5e2e323ac57752c08eb1792b27f802620ef962a6133af96dd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEA621401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b5d5c2772bd8e38d534efd5bbb6e918308e6fd393e0ca1905fd0efa38180e. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:08Z), 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/DEA621500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a69294bccda56aa789f5abce7c34603b711d055c67513a0893ff454b4e68fb4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEA621501722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208ec2a91070b83f37b500f3d25728923a4d2be2928bd8df88439009069c803. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:05Z), 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/DEA621701069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025163a412503423153f5acb05a904087a30ca9e5510578d3ec360a3c95bc970. 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/DEA621701073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb102c4622201aa63bde7b78d0d8f1342435cbccb971103e0cf6faad385b51174. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEA621701075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f93124ae6e8ad8425354106a24fbf6a17980db5cd24d94c92027521cfba274. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEA621701077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b12871dcc5112562e21a95413874ed178a9dbb1b1a8488c150b8c3ee83e52a2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:06:35Z), 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/DEA621701080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026cb9d5d02ec97a6217582a89343e7b978c0f6746bd29843c3f0d1558d8816. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEA622301323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32676bbe9c72f4638ec87c24ed8894453420e657be9c14b3d06e2f1717145b93. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEA622302857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4e7c776145104cc3dc7d4ddfddc8be7f716e907cf23fa424921f39265c878. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATHP92500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e23eb946a80eb1f6df584a4a4b4782fac803241f902ee4ba490f7216e4ff844. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/ATHP92500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c831b751fca43a12d897bdbd4daa398c5ab77de52940125e535c8d3d18240f0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:00Z), 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/ATHP92500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30a207353bd516716c4cd790d78b03bfb95b6d965449d3dc3b5465895212976. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATHP92500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06216760cd327848fe064c4d5ef240cfa07567c5e2daad4420075dea444e747. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATHP92500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2062ededaeb7cf9c065ff8ef255008738999f08fa56da4f68b479c53b4c8ebf1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:12Z), 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/ATHP92500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2dbff2a265abb39af7c48f097ad34b2a62ea626e1be1aa47ed4e17b6a1aaf8. 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/DEA621500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaefe1ff59519a084ec1701cd8fb07adc7febcc4ce526394457889fec23eada3. 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/DEA621800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc303d317619b89e5f06ba445c4fefed0afb777deb1d0f2c0caa85866dfb16e. 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/DEA621701071.