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 0xe041daa958d29f9d4529d4f0e1783c517bd4d9d759c4047a513cf1b0159e1bfc. 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/ad16f1aa-74eb-44b7-b7e5-5d9e8ebeab99.json and https://artists.proofprofile.net/proofs/artist/ad16f1aa-74eb-44b7-b7e5-5d9e8ebeab99.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 0x7088f3d6bf683232ac4cb0d1d5ca7d7cab4936e8ce273a2f183b654a912aaab7. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:29Z), 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/TCJPC2427007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa6d70764f254f396b43abcdcb2042ff328d601f2a6aa68dd804fd6fea4537. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:07:22Z), 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/TCJPC2427545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb6cc9b3dfae5b86e083893a11465bf07ff3d81f432a0c1cb0ad5f36867dffe. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/TCJPC2429524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a92218cadc6b57aa1d1408c8429b5f8fe9d7f9fa38e89b903797aba3ddea6b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPC2425910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7088f3d6bf683232ac4cb0d1d5ca7d7cab4936e8ce273a2f183b654a912aaab7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPC2427007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb26ededad79dcce388b34d090cad3ef9613390a0312e39406f321b3d55f8e4f. 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/TCJPC2427542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa6d70764f254f396b43abcdcb2042ff328d601f2a6aa68dd804fd6fea4537. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPC2427545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bfbd12f288a815e15326bce690581ae079cedc225fc83d0f611cdeaea441fa. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:51Z), 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/TCJPC2427547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f6362bbad6eebe7d69926c54321f9496c7d358843dc4140ca6a4f92ca5decc. 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/TCJPC2425971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbb377702dd9515a92d0a73e43d141b6a79bfc2295b533f0605c64aedd2daf4. 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/TCJPC2427019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752bebf785a7099fe05d61893b1daea9099e2941e9b987a5fe9501654ae3054. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:17Z), 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/TCJPC2427041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaf807229811cac3690495a4335e69228fcae1c8527cd2efac4242113164c87. 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/TCJPC2427502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ae0caa2eaea7ba1152dc194339a1c398bb7cb3f0c10f5eefed649b6ab01d9a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPC2431166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7c6976ef5febb102e43b0214f794b093a40722c93cb07a29a2b0997a742451. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCJPD2587062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d4bcecadf1bcc19046c63c8a3da162e339bcf8d65a53268b7d547cc23319f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCJPD2587064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d4bcecadf1bcc19046c63c8a3da162e339bcf8d65a53268b7d547cc23319f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCJPD2587064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f8310b7ab96f8e57bfb1cbe3c88c6637879999eecbb90e3261aca69a7cd845. 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/TCJPI2545965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0148348d2a478dc796a76ec25acef73653ba68c0b6e1de46dcd2df263524b. 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/TCJPI2546005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f3fef5d1a390daa1d9d2d9f12e74d98fd638a6705266792419a416c6757e3e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:01Z), 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/TCJPI2546025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9fdb29eb90d00a8ac0e37b439ae70fea3437196064ab0501d64acdd5210799. 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/TCJPI2546286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232965625efe0649097326c46709fc26cded289e4cd9c51f24f2c81557cec6d8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCJPI2546310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cac8d6664ddb861833ed2704986cd3f405f1ee566ab2d420905b6bdb25e95d. 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/TCJPI2546320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751a62ec6c54e3500e46d7c4788c5ca081ef2e764ce20be7942e53b2b2012e4d. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCJPI2542552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f8310b7ab96f8e57bfb1cbe3c88c6637879999eecbb90e3261aca69a7cd845. 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/TCJPI2545965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844c6fd1182b034b3b26625fb9a14ed84c60e44ddc278944d055368ba5948e6e. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCJPI2545986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0148348d2a478dc796a76ec25acef73653ba68c0b6e1de46dcd2df263524b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPI2546005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f3fef5d1a390daa1d9d2d9f12e74d98fd638a6705266792419a416c6757e3e. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TCJPI2546025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b39eedc996cf00eb1e718c1e18ae612c907721989141ddda1a0bf08b0da899. 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/TCJPJ2537961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232965625efe0649097326c46709fc26cded289e4cd9c51f24f2c81557cec6d8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCJPI2546310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8406880a804e7c60a2b4790e45c45bc16ef22a0caafe654543a81bb901ce7f21. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPJ2537967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d22ed6e55dc25c011780f0238aedc08f616077c56df6e9c92ee2239a015df. 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/TCJPJ2598073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff62be38478b18897d571b0333d95f6f8c205763ffd94684470ae401b9d7e9b. 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/TCJPJ2598092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17cfd9897837f7bba78f7204463ed02b46dddd074674e8119af61bcbbfa01d9. 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/QT66K2562203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0970df35defd4f927186297bd54139517e2cf55e31cc4835cd74fe09b2422183. 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/QT66K2562219.