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 0xfed14361b988266d36acb440efa46075455bd5dbf339ae268860b87530d850ee. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b41aae59-c189-4c16-a065-fb9b41251544.json and https://artists.proofprofile.net/proofs/artist/b41aae59-c189-4c16-a065-fb9b41251544.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 0xfe7c1c8bed9b150f45c436e2ba6493c341059029d2ed7013c8c3adcee916bbee. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:26Z), 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/TCAHR2308875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaddb3c31680c31142f70637d1569f0b2a9dc927dfef464e91701293efbae617. 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/TCAHW2409857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eec4a264dd7ca4aaf28e771e74667f4a98bcd1d3283f78d70cef3839ebfb4b. 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/TCAIA2437125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f743508e8bd362cdaddbad5ff807f6bb0a1c2c297d2a91303ca3ea7378bbf9a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAIC2473143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9d82e19b7aa125ab560eed3e6d9520387ac8c82f99e5825244adaee2062e08. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIH2437820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2698985a1a043660175f25c9ba32167dbfe3c86f5018734416d82daee4ab43ac. 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/TCAIM2400807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d016751c835b3c35602b392eadd06488d7838b8dd4f068e1968b53b58d6283f. 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/TCAIS2455054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c0a7fc8dcceb931e7fedcb66eae3fb81e3f57e3224eaeb27e97012de6a436. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAIY2428427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1271b4f936e35c1d5a8715e6e115d9bdcb32cf6cdb73d404496a6f6e113873dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAIZ2410916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cfab7dac87463c7148950c3f925fcd9a02a668d7b520569e2e6de5ac831069. 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/RUA6Y2501131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e784e9796453f9b9a205a978754cca6bc63ad58800cd577fb445883736d619. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:31Z), 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/REAWA6250171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98272bdec039961b397eac4cb26072df4c07959d80780b49822f63f4c6f03967. 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/RUA6Y2501224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df9d36c29b85b9c05e3ccc23a5bc3a54879be80e8cea2e53a89752ae8987fe7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:04:37Z), 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/RUA6Y2513445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1b9b7141b69ae7e63f06fcc588de371832a13336c9c3d86aaf73e71aa04174. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA6Y2529843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d70df975f7ef810235b7a20d082194285199e7a51bde6ff1e72a88a81c9dc8. 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/TCAJY2526834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0867f795a9119dc3d08d4f931261f897c6d4ab11032746431cd7e579d0a80. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUA6Y2540901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359c231a9a3f4bad53be184557a25d09d5c43c7d039db1ff167617920d28f1e5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:02:38Z), 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/TCAJY2526815.