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 0x85bd9b25d8d831c7f3ff5a0a643a0791f7278ede6b6afb3270d513c6ccfb5da1. 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/e3602439-8354-4e25-a5db-e9265ff47165.json and https://artists.proofprofile.net/proofs/artist/e3602439-8354-4e25-a5db-e9265ff47165.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 0xb911a215043b04c78a4e5f55d8135b60ef4e1892f547e6589650ab1403b9d82b. 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/IDA142201198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb911a215043b04c78a4e5f55d8135b60ef4e1892f547e6589650ab1403b9d82b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IDA142201198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c5844c3dc57991634138b44ed521eed23923015c7b7ba7c424254e1567ea91. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:09:04Z), 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/IDA142205392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f692651a0833b0bba33f7b6024f31ac37524783278106e34b4cc29f415327. 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/IDA142205393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed09fe6f78a2f6f687efd1558be1d9d38fadc243778e89803bb710f47d9705ba. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/IDA142205394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58970e52b7f43ee4e0627d15b8540b8bf988e3a22bbe99294ec273809296a91. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/IDA142303754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd52278a7f27fe28419403ddd8c6c9b0e92eb127feaef1ce2e6c55a657be5e2. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/IDA142303839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb253099d0fe6e18b3f3b0b41c7e616ca572731f96d4e691508a27e4dfebcdb. 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/IDA142304899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e56ab3d9a69965ab44a53d354beeb269fe123e735795a4da01de2a563f63f0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDA142305877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc3f0398aece88bed5b1b97ded9200a996c6744c210670e7a0e0fb0c825d4b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA142305878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb6345e2b4884368c2b7b1b3f92783630daade47e3042a76cf4ff855ef9e544. 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/IDA142305879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3297715ca5a2d49782e1376d31139927fb250e7237b3d701a61af4465b23ae0c. 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/IDA142305880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a6dd6aff45dbb8e61f74dd1beba3bde6b739d3df9759bfcac5afe10d2e22f7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:29Z), 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/IDA142305881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6527f9b7e7b5ce5a5597757c1a533744e76f9ef3931e326988634d56a1594c8. 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/IDA142305882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376f50fb912814b179142d688ee8e274d156c19703efa673569de6acea47351. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:35:11Z), 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/IDA142305883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971a539c636b7e93f204dce4f04d460a2f8b60d9c4f026627491334c266522dc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:24Z), 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/IDA142305884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45be4090275bde48d88e19cea5a5ac5abf4d8712ccce2113b41b5e59dc12ba47. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/IDA142312795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4526ec5f68ea536b84ffa756f7d8a21fc873432b8da2243acd33e96aa79c89bb. 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/IDA142315886.