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 0x1cdb2e70f86bce84cc33898af6e29ee81d02d29e04a034de1c96a9e249fcd07a. 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/731f8da9-c254-47c6-aa15-d08fa0cea10d.json and https://artists.proofprofile.net/proofs/artist/731f8da9-c254-47c6-aa15-d08fa0cea10d.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 0x3c761e16371abb8452832074f04e9bccf3c4fd0ec74f6cd92363ad53382550ff. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHZ42099369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fdf2f3559daebd62aa6b41105c11c87cd11a6905e84f5fa1a2e1547672a352. 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/QZHZ42099373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a129f8029d9c20cf6fb619a43409963a039c07e3f4ce8632c0afb61eb64c75. 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/QMDA62180219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe243863ad29c1a6095ec89675135ee6bf7e167598c44d7320998c68b6c432a65. 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/RUA1H2292979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe51c7d9812eb2cc38776ac99b41867017e5c5c9d95a66fdb88eb2da016b6ad7. 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/FRX202290491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf4da8ff438ef9c35e5a3526def49e7d1a8d0cb229e6eeaedf2f67fbd0da45a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX202290495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c3e8c354a5c38c27aab17e1ffb5ad1cdd21fbda3afda3fabd3828dd06e6e44. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SMRUS0072530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5350ff72e98f8932403b85e77dcf74564f52a784d6960e59c97cf814571f5d0b. 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/SMRUS0073447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e33c58372801b085c4986ec5e79b7d4f82eb9beeb7feff462d6a1b1e6c20ec. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:17Z), 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/SMRUS0073856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4dc5d3d7eb763b6e9a00586cd32ad0ee9767935b73edbfe7869618374a2b36. 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/SMRUS0074171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfc8b754e934a0b3db8d6dc03b7f6df5d54830288fd4ad3da61ea89d7307735. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SMRUS0074488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e93bdedfcbb08b106a4c1b77e7f7a06298a36c64d02cda2ff327f15a2c54371. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1D2374534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d09e4471a7d7c4946f65c644457e9e1b41cf70b8344bb7ec235a18869ccc47. 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/RUA1D2374535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40b3f806ddd903814c1fc995aa1c4cfc4370c539bb000d5fee100606db6cd57. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1D2374538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48da0342a0251f7c7ff9c807c0aab00b13e6bc4d22dddcc38bcc179ab289805. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/RUA1D2374539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b80de12654ac685c36e37981e9d6c4805211874feb00a8fe60633a9ff70cb97. 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/SMRUS0076338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3778807df65ed39477711e2f45b7b729c0e1c8ccd9728bf06049e400da34cb8e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:41Z), 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/SMRUS0076475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745604756c701cac49b1436479b1508b608934654885cdd05f7631cdb921f7b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SMRUS0077206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e619095fb1b0de5c4029c68429389e496a05fef097b57fcaaddb4dbd78cea. 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/SMRUS0078125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad508166728103f93774938d38fd57bcb5820c69dec857436e0e6803b46377a. 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/RUAH62408992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef5946d99404cb8964816c115b8244a6452a13f048a6dc1a6a21b73442e974. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/RUA1D2592681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744a8a9c16dde2b60eee8bc8f7d8e11043c283f1dd2290ec84767f6e5c951ebb. 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/RUA1D2592682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcc26371087c6eadc753d59058f4bfe81f612b113fd9947a4861fa89de179c0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:22Z), 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/RUA1D2592683.