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 0x96a5ef10babb33551155db3b535194658b0a923db98fd78209f6eadd03608e1c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aff3aeeb-b052-4999-ba02-4900a09b8aff.json and https://artists.proofprofile.net/proofs/artist/aff3aeeb-b052-4999-ba02-4900a09b8aff.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 0xcd25d9087352df2423889601d73567c75efdd396d69f62aa7987805c8b41b607. 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/USANG2025866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43cb929ea5fad3f63bb9e6af247c2ecbe1cca99c1a041e7503c9dae1bdaec48. 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/USANG2026146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070ed61e985716d432127b4e515a7344ab8930220ff56e292b77f4244799067. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USANG2026147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f50091a8e9fe66bae5e69f7893fdb94b65cd042a12a19951a4693ee3a27dfa. 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/USANG2026148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297b6042209d69d4748284bfcada00c98b334ef000f14fb89eb99a4a09a56ce3. 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/USANG2026150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1908e6792e818b11af3372334bdcdd7e729a75cdaa479eab5c1ee4a94d8e2854. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USANG2026152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968334d7641e8c3985603e46ef063e3be2621a529a319df7094658da47ce6ea. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:57Z), 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/USANG2026154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ca1f53c2c559922088aece66ca7eed18ec54707fef77d913d2952ef443bf11. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USANG2026122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5a6c081693010ed1aa2b0a72d2904491c5231d341ba874f4a01b742e8d2a2a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:58Z), 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/USANG2026124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf203bfd435fd6e4f464e9e4d564cf87c3c7308f4af290a64cc3745e9503667b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:58Z), 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/USANG2026127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde17804cf7df69a450345729e4acfaad2a63146f1517d4312fbd3df7cf0b16ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:33Z), 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/USANG2026128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53941444333edd250398c1ade4c889c3148d67681652ffe24a602646a69b1241. 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/USANG2026129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f452e05caaf5255a88c53ab43896be33b00812e5cb1bd4a3c7be930a2a1f5a. 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/USANG2026131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb043f40961cd8a5d06bd471fbf3416f99b0b7a3513718e45c8b2a0bc239dd731. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:52Z), 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/USANG2026132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046038c1786d9754d50718657e6e7a1099f84b3a1a9a4c2d7f27ff23699537d. 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/USANG2026164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71523c41890a27740ee60e90989212b00448f4f40ae584cdff1c94b433d9e56. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USANG2026165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184446839453b38206c0c234fe5395682beeca3f052a76e30c03216607011b2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USANG2026168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fc15ed494eee12035ffcf34e77c57361d9298185c571310d78566fac433d3b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2026199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f591efa8ffa7e5129ce6fe72c203ad36d1702628d7bfdf3d99e2930ab07355. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USANG2026200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6633fe567f18e48625fc2c8720325f6c5e2a2975f1c4caec3eefc335f6df3fb6. 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/USANG2026201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4555930ba2b6c94912c2c01f0e18774be3bd5e335647cb63c0ff792092394. 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/USANG2026202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee8876aa5bb172117fa3fde144a3c7007fd44e04070c7d40c3948b4a2bcd1c. 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/USANG2026362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3598fc4f3de44b95276182de3642cca26fc090df728c8633bffa4186abd272. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:59Z), 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/USANG2026363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf11f0e49c3c9ca035214ee17252551e102796ddf59e706fab265e15a0617619. 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/USANG2026364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483cacf664c58123d9f959a85481ec601e7bfcdcd52c86cfdec0b7721916ba0d. 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/USANG2026365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f05a2e8b9f9dc3ed12b427e8561282e14bbf35d6db9c14061fec3e4fa3d7ffe. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:59:22Z), 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/USANG2026368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cb631b2dabb4cb2c90c2c25812b645f3ea5fb6fb2d9dd2a123c18a484444ed. 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/USANG2026371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d03d16ecc37d7c1617d57209ca9a127d519075247e2f999d241d5b02a74f29. 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/USANG2026514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839ee4a50a800e7d4e451115901baf2c8712ecfb72998fe943cb1656b418cbe. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USANG2026515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c7e98d20c553f0decbdf4fb54ef1bf591dad2ef9518dbd73964d32346c791. 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/USANG2026517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744f0d685f28820d65446c9cecea483fe63331a9ac2e0df13742f0e8cd34ff5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:17:00Z), 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/USANG2026518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedcb981ea5478263259a9ad139758b97bfec93a931211bd84a6c1f287e5a033. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USANG2026520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7945994bf4c841d9a2de85a054a899cc68b620e1e1ab84e185097c2ec7781. 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/USANG2026521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf5895afe00e5f8abaaa10577d5f716e1c5ff66fa52420c69df7a0a81f66ca7. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USANG2026522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2cb71e759507d5f9bafa90101c9abd3ab6c74d2eb33b566de5e0ec46124f18. 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/USANG2026508.