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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7ed816af276e6c76a48c992ff2eba97a371c6b2186b8ae141b007e6404b6d9. 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/0cffbdba-b28a-49ef-abfe-e392b56534e4.json and https://artists.proofprofile.net/proofs/artist/0cffbdba-b28a-49ef-abfe-e392b56534e4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b97e1394767bdd139561037ee857be588d1c8330085b6b077455317d1bbaef5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEAR41529283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fff9d4d15f66164d78b763b5696e6a042af99f9b83e79b38a1b38e8c10ec3c. 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/GB7RM1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20687615b4e68412292b637f3fb8569ec022e09380f3c0a033e0c7271eab3b0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GB7RM1600002.
Ashoka - Daniele Baldelli & Dario Piana Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d4a645a76af4da6129560a064f5ca641650f65dd2037ade3c62dfe601d2a93. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GB7RM1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e0dfc4f2cfb6860167a8404470ebc78fc18bf105c2058d8218c89eec5a0e6. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GB7RM1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53db919dd8abbb2263a321bdc09ec14b78b9317bfe740c294cdf06a00d9cf410. 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/GB7RM1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaaf13bd0d8eb78becb59b164c593a5ea0b0c08cc2ec0af7c96a61874155c27. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB7RM1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e88bc4aa88a8d32dac626fb0f76b161fcb788b97c1f4355a2c0b61612e2bc11. 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/GB7RM1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc425922c3f06c7933d7054c92bb904e33eadd4171cbe69244e9a7c6717a30e98. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GB7RM1700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7a2b082e9287c858bac60dc7cca8cf72a28ff5342e0ed0107a7f4ebb4b5ae0. 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/GB7RM1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d8920b8b4bb1ca9e987f0aee45a08c2f7681a6f0a8e00f67640610f851ca72. 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/GB7RM1700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651fc19070ae1ef7558ab9374279aa8d78554b0448fefa63b7534a3c5da0347. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB7NR2145209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa3be8c2c1518b9f38e75c8f704cadd935d6f7e16f53479fff55af1fcde3f5d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITFGO2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24d16938a7d9b76be27e3f81fe94840951bacad8fbe9c336948b5c99d507f7b. 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/CAHQJ2394513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb27b3bad54b2ca64385037efe0824cf27d540fc01bcf43cb98151be8a07f3d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBNUQ2501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950d8437cecee15a31dd8f6b23beb7acee3db3bcf4f3fc56eb283fc0cdc7c4f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM7281794506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc915a56448c8ac1d13885da60f2dc4de418c636cf5241366840883c2f6dce8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US83Z1824443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfeb74c858b42a16768f2e1031b1879011b84f1ec5b9068f66f53f8e59218b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR85U2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5b4e4aa4f3a4bfd21201b07316caa69248bf4711cd119add78ee6fb6592e6a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR85U2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c3daa468422c1254a74aa96b5a472e384bd83a74900bf44a05b68c7e1033c. 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/FR85U2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfa5da1ecd4791e17a72b6df36d1fd503276efa08e628b2597462a5d25f9400. 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/FR85U2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4698c8f14196221fec22dfc4a33296b5dcef181d3426760349aa4f1e71dadeaa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR85U2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742acdf4e64c262c225af3c4196d5e34f3dc82c5d7f406bc8111d6cedcf577f4. 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/FR85U2000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d6cd01763910c8fdef72830eeaed7a74f5a2f93a2bf7f2f1c0f549b36b70d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR85U2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57b823a804ed89bcfa5082e12c57e00cde2857ec73e55797bb6aa1a69be4660. 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/FR85U2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe80032092b572744aabbabdc4b86aa59a24d301b34cac6d4471bcc5503c38b. 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/FR85U2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9258e9fa82b0cbb89422f3351768316cf5089fa0f0abfa50a9640db34616064. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FR85U2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d89db1ae0a3faea88c19036f68b52f2ba60431bd49686cb4c7c7e5da03e76c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FR85U2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1d45c4f0528098b915c6a00c622965dde1a5a42ec20d52ce6b79ce46afdb16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US83Z1811195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe005d20cc1d19e63a670aa7db2ae07dd4bc0e876583b80d7164f85a9859f5800. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z2017167.