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 0x5f34e776a919f1bbb2604ceaf418ab65f2478612b77972b83981f8f52474e641. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/994451de-0024-4ef3-8943-26f93b70bf09.json and https://artists.proofprofile.net/proofs/artist/994451de-0024-4ef3-8943-26f93b70bf09.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 0xd4cd3864a0816acfc986311d8e5bcaf51a120e1412c80178f7ea929d12134bd4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR96X2232093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfce0ae9db3880a428e84d27d85c80332448ae7fadcc353d4bc0d6ade91bd8e. 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/FRX452294638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d93f72246f0cf7f1f10de3c22b6a4b3224f16d5ce7e47d9ee36e7f14df2001. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:08Z), 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/FRX872237369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7597a45012b08f8ad1a9b6fa48ec416dc091d2f47e9163239f96c0e27dec78. 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/FR2X42388599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60179c4e6b717b9627c4c0908704d80c1be2dd97e7bfebfc4676b57dca77d0d6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:40Z), 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/FRX872345708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736fc9889f372372edab96512f93b57009b46c202a786e8116a9d3706547f276. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736fc9889f372372edab96512f93b57009b46c202a786e8116a9d3706547f276. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA072301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed138c8b080a427d9bdbc6a6d3976cb713c1bbafb0ce16483a8b8a15b60364f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:04:37Z), 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/DGA0M2398619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34147c61f3b8274a93b932e6c58bdbd9a825301b76b3af4a8b5acaeb8482ba44. 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/DGA0L2381938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4478c9d9ea001c894f742b7887a61a521084164cf7a0e71fcf19b0ac40e3ac25. 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/FR59R2434753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4478c9d9ea001c894f742b7887a61a521084164cf7a0e71fcf19b0ac40e3ac25. 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/FR59R2434753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e063ad0d38318b6abdadc7bc5593bf89e648517cfc50b7a08c672f4670a2b. 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/FRX762407260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4bcc2d337a7db3028f2004523428854a0373f16acc4b4e3db5da59b29fec48. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA082476841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e315c8602a87aa83ec4c0a54295f065246636729cbe4f03620da44bf38962. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0L2465117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7ae997e50ecffe78d4753235e282f3818bfbf60a30d45d54d3eb89b8b5f714. 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/DGA0S2452539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7ae997e50ecffe78d4753235e282f3818bfbf60a30d45d54d3eb89b8b5f714. 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/DGA0S2452539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3be9f636dd02744c9feddf82be4b02c246782e587873a4d4f3bf25ecd054e80. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA1D2562206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ddc31badc87ecf21365b5f09ed29bd824fb38f07f63f60687a8258304ae5d1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUAGV2504561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf81a9378ae4fcc36e2e0921f4912bf6dc35791aa09556fa31d1794391964052. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/RUAGT2582429.