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 0x9898534eab82f9ae1ade936bb7befa961fa4cb98137824628a0f093ebd259300. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/357d66fc-49d0-4e52-8937-b0ad975d6a1f.json and https://artists.proofprofile.net/proofs/artist/357d66fc-49d0-4e52-8937-b0ad975d6a1f.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 0x7f786c576ac362f51af89da2ba1e7d7ae8a9331d060490641a03c30f2d943b1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJW2276335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a37b7f976430768493eb1551fe73a296aa8c9087e4bcf5c8ff46e2cc47d86f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB2223700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcc14d01f386fed260eaf6ff2f0d176c60ce9a2cf87974d8559c817f60a5359. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJV2116160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13381bb6741795fbbbc77ad6f3daa84ff88c0264d5020258576aa63894c0ad9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ52197535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d48199972c14d5309be9393705e1644fabbf7ac0f1ef7279ed66b9cd5158d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX3742000917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aceb7087d33eacd40cf206fca50b5f6e6490141f5a0d3aa80e654018db78cee. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG2076436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3766bba3f742610b5faa8f879fde1f5d95e6d36ed6354595b2998e919ee1fbec. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHZ41933829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b0b1cc17e03e2dd03d61d8bdbe3303f952cea2f58ae62d234b4099e4efd38. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJV2190231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cb68a0f1a9e7415ae48730bc81bcef6603c351a67104ebbc09f642395f513a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/MXC851600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fc422a36ae536923f08c6baf0f1758a3ecd27071c649a9939b4311d87d0d6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXC851600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe339c4b4db54641046c84529c5aed10052386d401db1b7b65552897a75a59d24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXC851600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc43dbebcca2e27b6b979ddbc1b32e779ef93ee4b44e1c0f067aff9a47ba9ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXC851600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4926d15384a13ddc1ea9786d73942096bc7e9dbed38d32b0d2f4d95562b8f3cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXC851600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d7f814a44e06265f2c40057da227d72563e22969351342fc3d04c498b1fdf5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXC851600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5427ea7f508df62cbf107582dc43c36d31b8a6d2272a107257f871b5b49550a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXC851600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8e7b8277c1e0450f742c4fbe336b034b334f74fe0632db4e1cc5384ba427d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXC851600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9357e73fe34291f8148a16e514c3d72189d1ddf677537ed1524c17a5424de0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MXC851600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea28602e58da8a689cc1bae5644d29066fad608751c738215a59a3241ad3dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXC851600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef65505ebb9649f6e02adbb5b6da088df9884eada8ff08f51ec5c62352dc34d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXC851600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c75b90d3e14673e94cf8124d14e9f16c4a854944aabfd9d140edc84304fe9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXC851600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d105bcc336a6b59bf2552e7a1f07e72296d0a6693466a0d37a4f8220736ccef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXC851600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f69745ef0dc8f45d19f226b3bb78ff74dab262ea1e4eafd38d9288054c0220. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXC851600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a70643af81c5de6d89ab07836f96144e51f86a40d1de0423a9ac2d4828de529. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXC851600073.