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 0x30c55334524850a8edb16ee9710082d86e7f56e058078747de3dc3c1cb29b647. 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/a335c196-8a3d-4599-abff-dc408876b109.json and https://artists.proofprofile.net/proofs/artist/a335c196-8a3d-4599-abff-dc408876b109.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 0x332b919922cb384a2cf99006618dc54ef521cd6732a349bc5497dc95b6f998df. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES82538092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2d71488e71341815aaee5af62c19666513d4fce24c540ac34e274ad86e567e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES82538093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe89ab353f3343b1f10474797ef997550ce39c0aa9db158aba366af3f1444382. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES82538094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa149375adba41066955667d8e8a4ddfc4083da2597725326c8ac67c36739951. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES82538095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf64a40d797f82315ff0db2381512f8e88b0e5eca2ed1f35f8b1b997629d91c. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:20:25Z), 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/QZES82538096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1232b3da805b9574a76163af1d7773d5d84d0b34aca50371c19c88128d6f0d0e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZES82538097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd020b5aa6e0c4a57f3d3b66a319a8ec48b8132fbf45be77f42cf4f6d8dafec62. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZES82538098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67190b788329e0198aed09fc3136cf43e943ba381c6e36a180dae9539876c9ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES82538099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ec2dbe5edeb82309cffed9c19cdbdb3364c9ef76da2db219a4af36704b78bd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZES82538100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1f5876ee47351adc65c7e97c6a5ff9c74ccc3c9f5d30afdad23d15a53a3f6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBF2577149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157726bdb0554554ac42781bc542222b5adffe25d3d3a524b385877c0c70bc55. 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/QZTBF2577150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdb769646160cc1982ab4d1993ea7cae21c6ed9844ea2eb7007c70d000ecc44. 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/QZTBF2577151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cdcd3827ab09c5e6a6200ad11e0cc84aa591c8761e1c98283a4a833f0d8f37. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:55Z), 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/QZTBF2577152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f544d963470790233271f86020fc847fa581243bbb985c3cbe5517d85c748. 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/QZTBF2577153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f18b02c6bb41f65956f5e2e70deed7ed6da06e563df6c81127fd534db0cafa. 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/QZTBF2577154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f4d4563f5083fb399731a50dce91aa51d66c40b67bbf94eff614b06f3f8b64. 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/QZTBF2577155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80b8eca2b57217c96fe4dd90e932ffbd33bff59722e22166a5e7921b050f0e8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:01Z), 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/QZTBF2577158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5a389e7cc0a9f319add18e073e1b62966bb2e2f7e24914be71b1798b29361c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZZ7X2586964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dd4195e4a9480d9d3d2d24b6654ea9e8278e715d16f77edc685d24a0666293. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZZ7X2586965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098da4767d7885c0ee5e30f6581aca47e831c77d86340ffc18fbd857ad908e4a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:21Z), 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/QZZ7X2586966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fcfe6a52e34caace5c368209a4d05741a2a04fb0bf0808145eb5d14884275f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7X2586967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e682949a6c5440de588da3c0ad627850d810918714b2ed82c8aad00f65f0e01. 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/QZZ7X2586968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a8b6fde4f7ff0097cddf96a0b14d07cac56be727ec74d1c99a763360a5351a. 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/QZZ7X2586969.