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 0xf5ddd7cada778273eb9fd81dabecd45cdac238eabcf3197d7801e5bea3db7986. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce7e4dfb-520e-47a5-8820-51326102d3c5.json and https://artists.proofprofile.net/proofs/artist/ce7e4dfb-520e-47a5-8820-51326102d3c5.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 0x34ae05b1c4f03547f6ee66572adce764889103968d151162899ec989a55545ab. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MX2832027173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c757dbb787580198074a82d52376f7129dfd346a348e257b81b936cbb49c2e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:40:49Z), 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/MX2832147764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92450b01e8a06e24292cbbc932c4a5a8564191f6bc9932a756c6685f865d55cf. 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/MX2832147771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc304b5da07c035baf4e2690073bb6577a3180c58ecceb88214ac4fecfc750f5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:25Z), 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/MX2832147774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2aecf30ee41bdf07cc53fb98c053247a3737a357d58a9da26c65c76d20fb59. 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/MX2832315825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69f48249ca61aec72c1950b00a31a86d16b9dda8e63f60f8d0c8c216373241e. 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/MX2832315826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c3793c4e5a7e7f7c45326b7fba5c2eb0e2eaf05d4ff73f2597886a5cc26a7a. 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/MX2832417838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99043baaa23f42e3d84eb8bec9b3a9677f044f333e392ed625bd444f223fd169. 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/MX2832417899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4450331c56ba48cda2fa787eab5c1e2dd2b244550368f11a0eb56182dfac60. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MX2832417901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21437b11232820978e31a8088659789da5eb22ec002561b91e3cb6214a717fef. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/MX2832417902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325ea8ee00ec3e3e06eb930028b00adb0dd1c4316b29fe43ed1a370cd44703a0. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/MX2832417905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce64eee49af9085802a4f8767ee570814d254efe2993c8c762615779b4f845c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/MX2832417919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dc8c909c3c04e8c25d1c7d424a253882a1f4f73b15fba53158e96b754ad304. 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/MX2832417927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7899cbef3521738ed0605e5d4578f1dcd035e45ca430ed5696ce7945495b8b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:51Z), 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/MX2832417940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61332e51f749d1408c1062b31d56cc7ae72306d7a792190f7f1945f9e441ae04. 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/QZTB52583392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9de0f5f307380b25c7127b3b867f177636a34c5d444044bd2a88783ae8024f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZTB52583395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b09d7c608de4df11db084d1df6453c46c219e7f6b4438b51b6d8553958786. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB52583396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f6bf0a31594ae88ad70526cab3d63aedee577805bf100e6a15593086b9be2. 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/QZTB52583397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21077722d93d122c742906fab6730ef4fd7538a725f1087280bcaa9a003b60b. 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/QZTB52583402.