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 0x71f0a3239824e3b648b974daa46ae50b13293e4b2ccc42c0a4e924bd2e4c327d. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7364cdc-8694-4941-a6f1-0826a4829c4d.json and https://artists.proofprofile.net/proofs/artist/d7364cdc-8694-4941-a6f1-0826a4829c4d.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 0x12a32632961885b514668161258d94751b04b34d3320885c11702bddb3321de7. 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/QZHN32323834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29632f95bcfb7aae961ed2eb3d9a9cf3b79e4a4372dee4ecd83ebf7a7f644a80. 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/QZNWR2502920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d1df9636aeae51642897f8686d559875ab3883abf294b94a0a7c6e167f800b. 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/QZNWS2504680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d6a763efc538b103735101e3a62ce223695b057232dc72dce3d8a3c30c7c20. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAU2547017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4c13390bbc57d2f9c89255885ac79ab8cf0a7bdf89fcc8dc61bbde8993dbf4. 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/TCAJS2593424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee9d2a5108f34560c7e62271bbd2b55a1de76dd7fa61cdfb2163377efffff4a. 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/TCAJT2563253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd648d81e74a52ab308d2971f7c2c3e5c322792b9e11efbde8172468e842463ed. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJS2563273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbcd9c42e433257c4e9eb17dd8a41edebf7534723ae8e9bc7125c38c471b33f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJS2563281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc224950b95e9b5b830ea0387e131a6aa20930e738563768cfd40215d32957a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAJS2563290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca0c73f319992ea4d150236e9468ae6d6b0fe9eec60a213609b023d881df9eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJS2563295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812c18fb7987ff286e4b0e81edbe841759a715db3ebcbd6dc4dd14a41ad648c9. 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/TCAJT2563300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4238bd7ae5fd903134ac333d8eda6da60ac6e9c0a5b3dddd60c91b5a742ae67b. 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/TCAJS2563310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cf06a8b5f15e54932a152f550211cf569071d37fa9301ddb39554b1033259b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:07Z), 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/TCAJT2563327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44e250b806c74a89491517458b56fb9a12b173716ea1c588a8a5c89a1d2b8a9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:51Z), 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/TCAJT2563337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89854e4318ac0169a602391a97cde1099c4603d4de17704b2e24577beaf44608. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:06Z), 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/TCAJS2563345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16835d94fdf4b743dd79eda12d61065bbb8052cb04ef433f0d63a6fb996bb53b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:09Z), 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/TCAJT2563356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61598128a232e75c1b35c608b2ed5b6418733b6f8ad9b93707038b5148fc02ff. 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/TCAJS2563359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a973bc7dd5b8faaac25616374a9b6e0ccefe1e0ad494d49df1763f34c7068. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:15:30Z), 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/QZHN32501538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3819fadd634dc6c770c31199b19e6337f2cd33ac75cd235681f3e084c6064346. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:17Z), 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/QZTB72571140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6918c52e032ba7c7bf4637c06f17a9f9ddc3cf948583e6d2bf9309adf934b7e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6Q2326338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c1b9313bb53d60f9cc6d1f8162fb566a3d31bcb1f582c27614afb53440db52. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN32501540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596abf6ea39697319ea9a90b07b7b4e2fc7e227848aedf1a32fc5efe505d622f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:55Z), 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/TCAJW2516365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbc4644377471eb1bdd810e9c4e1f7706b5c4f6c18b6683265269a682af69ee. 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/TCAJW2570776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1031d0448f7e3563459171091fb07178c3ff68625dbf573ca78f7fb12be62. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65Y2563666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5b863ec09d6709978f77ef7e832c4a03f361d087245828453fb2602e173688. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65Y2563731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71b86566042863ceb3497fcd9a1a232e29e5d448995bd41bffbbd4fe54d270f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT65Y2563771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0917fe7e993e6a40f7ccce45e98543a9f8978ad4b2154b84d53dd71c6db359. 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/QT65Y2563792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52210904a7f088a65867b05ed2541168fc58c53c0cec168daf6b8738eb781175. 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/QT65Y2563808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a78ba80867a414b451cfe231c4e9688b778d8896dadee4b3fa37142d12a01c. 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/QT65Y2563881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26151f3dae1be77929178f995e8a9a89b18593c901a41c479f171c003e5e5bb6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:42Z), 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/QT65Y2563917.