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 0x6ae479a8aa169322d611641d97f7c0f4566c9c73a25801f9cf51cabbcae01d88. 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/909f8261-341f-4ee3-aad8-43e4e5815419.json and https://artists.proofprofile.net/proofs/artist/909f8261-341f-4ee3-aad8-43e4e5815419.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 0x75672064adf0de0ed5b65576dca3766cf1410a021edaecd01838782a5b90e51b. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TR0511603855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7e8f18444441521c366057f6329137f4abcb4069db03a78c2cae2619ebb192. 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/TR0511603856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ae877faa418ed7a4a76f9c017672b355951ada7d13eb99f135e4e07bbd0e3. 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/TR0511603859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416c31d1ff072f232f824d3686b41ddfc8ad493ed334801a364cc5ca4519bb4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TR0511603861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7dcadabc12321ff194c6720e252f4c97dc3e5b6eb5aef5c74ecf4a7860882. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:32Z), 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/TR0511603867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03732186de905a21d87f3a0eefde18b86ae43c0442abb49106cb2664e539c3a8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:45:37Z), 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/TR0512107074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaea380a7d1f413c5b1b073c527e5d05fb592608315ae638c956f1d265aa159. 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/DEPI82200542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b6b2d863b1917d4f326dce20ad281242ff875b411d94f810b645f3273c7249. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:29Z), 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/USA2P2223120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec4a8edb7fcce3ebdcd8de412180552e9f8bc7b6bd256c7aa855022bb09c81e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:36Z), 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/TRBPU2200821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53548f90709ebdaa410eb6bd10aed6502f4b6f3931bc38da172d864a993ad00d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TRBPU2200818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc85c7159b3faed654c76ae16fb4dad079388b37b106a47fdae28d4e1a6c0135. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEPI82319584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09216fc1306c13471826d6f44d170b95285f8920e0d31b5c4500266a5077023d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEPI82319578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba6f280bc309e7d59ac226f4294a6098a8fb66f22d4d8f334440ce9274fe4cc. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEPI82319585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ed6a7effde80d5359fbe41d80ed45d8f1680326e60e1ad11ff783b33f028e7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/DEPI82319588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fef8f507c03f9687a3d4f57091f1f60940268d6cd6941c851cf48c98b6537a8. 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/DEPI82319587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fce5c1fc600713b664bce7aaa63bb5fed8586f672cbffa0a5cdd80e035060c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:53Z), 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/DEPI82319583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830428ed983c11c811f3e14cc972573846fbf09e2641dcf62a280a9fcd1741b9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82319992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ae53d3275aa5b7c9efc61c832bfa2539aabb87312609d3f4b81cdae8784db6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEPI82319999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177ba120438bdec1a6e71db362be692d1c09f9f03865e598188a988e9f3bf45. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEPI82320002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b024fd2348cff57b9184d58b90b8908486d80ccfddf5259cec9c1d9dfb083c1. 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/DEPI82320336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047df87a77399f6905e69df0ccab2111b1f4b8dfa06fddd42c74c9bcb4729c9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:03:28Z), 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/DEPI82320701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5524ce1766109b0baa4fa8195fbcdfa6426e738fffd083287acc63ab2871fab. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEPI82320698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899139be103ede9aa62f691deee47bcc1d53ac9359739918918e6db6d6d3c706. 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/DEPI82320695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946ba864c11b75661a76db86073f898531d18b57eea469cf92d5241bbf3bd335. 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/DEPI82321493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb964f10ec3db1950031d04ec3e09c291b77829efc9228d6417ca5bf1cfed030d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:20:53Z), 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/DEPI82321487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb646a455ed99c9931b8ce6fc03c40b65f2576d790167292d2707a3d313c47c10. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DEPI82321488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3e7ce2e49f701e71f6eb9bfb0cbe6cf761b6d6bd6233352830b43fabb75a5e. 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/DEPI82322103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ffd85731d5796da90f34227762641c55047f1f4b11302c595045f8df86aed5. 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/DEPI82324250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4853c96e8ab779f011b30fc606c6a0b2081ccae50ebd31416d1a89000c881d31. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DEPI82502877.