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 0x7fbbdb565e2ee7717f9521e96a8aee70855dc54ed0f6a97704156a2a0cb66034. 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/dadcf87a-b828-45b5-8fb0-3d456c93c64b.json and https://artists.proofprofile.net/proofs/artist/dadcf87a-b828-45b5-8fb0-3d456c93c64b.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 0x541469f7a19d0fb890516d5989a9252e2a7d9ca56e47dcf3dbfc54bfde9890e8. 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/QZFZ42425494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220a81c2993967ffadd78858f1422e6d1a26769756cf545bf153904bd15f12f3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFZ42425496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031841bf0ea7ed2c072dd8539bf6bbfa56b20947816aef4fc095e1e977099da6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TLVEM2464370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4291614fef0ba5677bef5f327a140858dcac136ec83dc43fa94552919ad3556d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TLVEM2464371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b557b7a49884ef3c42f69d65e1a858a1b24eae1a08f118b3889afd18db6ef6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TLVEM2464373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4128a2d98b013bf2494ca187352b9465ceb9b07c319001630b6419770645b97c. 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/QZTBC2467378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb476718714fda6d4a855836a76a91fa761730507b404038646471a44a8f711. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZWFJ2417760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126a9e67d91471fd05f9b4a52bb0d1a7877fd4a2cd8397d15b7e4a161cc40b17. 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/QT3EY2427928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786bdd0e56ba682b28c0f2ad71adc48f02e38ec12bb9bbdfdefa504b0e93bb4a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QT3EY2427930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d8f6f6137249c784ea90b0d487e214145ceb5f29700c2e09b58269406dd83. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QT3EY2427931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4128a2d98b013bf2494ca187352b9465ceb9b07c319001630b6419770645b97c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTBC2467378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eecf2f78c706ae428d5012fe2f63df8eb0f36c93e5e3e2b390a5c9ac52db63. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QT3EY2427933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea290af8bd5435ae59c1571e9d1be23717d5b02a229a6e9123a7b7ede9b50298. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFZ62501759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb059bb138f03bb88356622b2ff08343c7902181dd75be5a90ee773368dc75ff. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZDA72513558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c25e5aa80aa09f5e8c8aa16aef97a790cc1d593f88135d530713ad51440b93. 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/QZES52555648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47402a9423cf0664725b50f4f7f78dd23d390801377ac58d1820e72bb0978e0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZES82538324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d6fc426729ef0dc0deae9ea0ebebfb059d1ee4944a6fb9038774f7c2a65627. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHNC2529407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47402a9423cf0664725b50f4f7f78dd23d390801377ac58d1820e72bb0978e0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZES82538324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623e270de7c986350b35d44810899e077b12029a9c3a12e73bcd24ffcd49053. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZMEM2543028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540ef7fa0900ac4e65e4dbaff6e84134c5f0d4db03789c1b40513c34bef4459. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMEM2543030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a7773a6918bd7f4e4f3ae6e3774e68bc0dcdd16ff5f503bb75f5aa08dd0a69. 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/QZPLR2562804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e593dbccb7e6ba414cf28bb497471f778b318acfdb0102410495d53872f988b. 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/QZTB32534140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce4dc910ee2e7a8efd18ecf3dc480126059288390df45670842c0081f5320b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7P2579361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4875f90fed8c1c7a38720ab78d49d67a1374363a52fcc552c1750390b963b2f. 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/QT3F72561778.
i lost a part of my soul and it has never been found