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 0x237e92eb64b9bc8e4c02f73a14b66a2199052de1b8c93704536192a00034fcfa. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8eaef068-c89b-4f0d-a5dc-83aab27cdd32.json and https://artists.proofprofile.net/proofs/artist/8eaef068-c89b-4f0d-a5dc-83aab27cdd32.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 0xa87b7f49404197e976af5ca8850892a2745d009e6ac4f83bd2eb9aa3f1358b5e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:18Z), 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/DEL212208030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2abf802371a0fe4d82c0c8d473a6622c5ba279a314f6b03bda92c82e57bde1f. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEL212208031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799ef3436507f1446e790f7e21281a499b9a80bc7808ae820459fb09a7679712. 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/DEL212208032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2434e8ab3f2a83eb039370fc6b9950021551e64580b59d790d715415297a657. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEL212208033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6326c1cb5787d5751b2ba16968ba4d8fd58003bdfaf21e51f7ff3cf95bb2fc3. 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/DEL212208038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62c4ce412f008e5c598e25f42997d62065d47f22465b1e61d50cbbb36d84b7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEL212208039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ebb093c7a3220b3c717228ab99bdfe7f6acc24249bb0318f33250cba1af396. 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/DEL212208041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8233429b80f56b98138a010406e9de7bd0bc2a962c5ce3aff76435c346c8f00. 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/DEL212308462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97929d0d01891f0f34a918a35a317ce71eca7f7872dd86246a661193ace4d0. 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/DEL212308463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ded6b9555a3726bd84e74b1391e7bda792144c3be8bc3cce3d7578b9005f56. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEL212308467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42fd5d1fb96190005681af820e9342cf228299e0b86ca7b6d6b22e0fb670a97. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DEL212308469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c955f567399307770fa91a8d325836eab9bc7788a05876927d345c569b6945. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEL212413122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d0f4fe6d2fb17b90edcdffa51666d5994622f32939844beedb0e966b49428. 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/DEL212413124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d72d97c2a5147f4a5c46999ce7e414f067dcead64fcc1ccb95a024f1359054. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:18Z), 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/DEL212413125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf358debdb1437b70879b89d45eb1b7596dcdf3b212b726db4a781b5537d161f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEL212413126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7730c6c7da4254cdf2c6cd1f7158a7f37b2b851886e8a914184f903cb039b405. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEL212413127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dcd43dd81d5e5a4ff6a53319374404d707d02bd2088b26f9526554b1191bd2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:04:48Z), 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/DEL212413128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9038b6658afe86675f4714a9cd37d584d1f1d27933d2a08b691efab9210ebea. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/DEL212413129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fad6c22e6eb9d38e4028aba61251e04811232faf61bab1c3aef7d2b3abf7030. 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/DEL212413130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9861bc978f3afc43faac3bbb79e6da545a8661152f3dd96671a42971a91d8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEL212413131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18d06ba2ca2d6b9e15eea1a08d8da12acab29fcd1b434efe2d7db1777764e20. 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/DEL212413132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eab10125a233a6cff3d1abe8a3bd2cab1b742e4e5cabc64cbdc89e01b7d5c8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:57:39Z), 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/DEL212413133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9bd37bc2e78f70efe909d8f67bfcbe7dba7a5b63b2cb86d6a28cc06eff013. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:33Z), 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/DEL212413134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da21f5a5ae90de701a640e84e6371f89e64ade080298010b2b61ca4c4a6517. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:46Z), 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/DEL212413135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c2361dbb69a9464868eac389ce07fb61f4dd1c7146ef8810e9c67895429cff. 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/DEL212413136.