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 0xd4eb345b367c99cbb171a048eb1aea7769246f3e720af73293d97525ec2cda92. 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/28b6faa9-a01b-4fb6-8b4d-b0dc91b5444f.json and https://artists.proofprofile.net/proofs/artist/28b6faa9-a01b-4fb6-8b4d-b0dc91b5444f.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 0xd2bac015b9c58926c0b6d5b4269dc5bbd4c7f5e07d4571d8fd75c63ce40a797e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42047703.
Bir Kez Olsun Ses Ver (feat. Yener Çevik, Xir, Eko Fresh & Kamufle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6e40768c98e4b11277921085ae0d01a6f6902ffc5d5ed5b2fd28a2350ba1af. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:19:33Z), 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/TRA162100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e687fc73853c4ff18cb84fd0be27ae8480b5f1ec39cede8ca3ced901c4e82a8. 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/TR0012200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53665d2078a3a1de33e1eaaebd2bef53a6b346213bc57e36060f5b7d77ea4327. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:34:17Z), 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/TR0012200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f897ca7198c273388beda730391da0310c60cdbabff8a4e9e879b32671286f0. 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/USA2P2257587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee79b6ed399655eeae8f7c26d73e1ee629a0158e49653cd630c6c0b588703651. 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/USA2P2359037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25fb60acd36238e2517916830e99070ad52402942ac20716eab66e4c66e5ab0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA092426511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcc0d24d5ddda5b1eab0771bc742ea8c33ac4ccec2456d634dadbadafecb56c. 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/CH7812234719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c863115229293a94e245b88ff3dc5376b33f8bd7ea1c49ae125a8c719e3983. 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/TR0061400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f356a540913662fb7e7a3de3007d5e0a6310e53a2660b88b68568b3bc359e45. 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/QM6MZ2032121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a86a5365bccdb80885d77ecc4378f7b2e5e642da4050bb14cb7cab7b0f9317. 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/TR0061400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0bcd82b7553be311ba30c8b47f59ed5c9ac34c940de740902120f9576ae296. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1634266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d09516d694ea176eeb5f4ea4a64214d75d5cb9a9f38c875fe026c92e18bddc7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2158294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076caaaa6d5fe9688e5681a3d4d5d704c173643eb8af3c11927e3f252ded018. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0061900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373789da911036ee2aad09e5dcedd66f46af72dced083ed9c2ea9995cfbf5272. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TR0061900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712bf49344913e73567edc8fcb5d52053caf81d656969f51067160263c0691cd. 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/TR0061900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ae4207848fd6b4987d93a763620c13a6138861dfcd2ab9715dd3c03a1f3442. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0061900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beddb8e65dd26ddc6962f7807de048871a980ce5ae4623cea4a5b2161dbd389. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0061900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f39398af3dd0aec05cdd28eb1456ed522fda761b025bcb4d08d2e0640929e5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/EEHU32000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb9c8601be55addad29c845ff51a81d84696b2303aaf33aa1a5e3098753dcf. 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/QM4DW1670694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8571e8157fb3f22e1b544cc13a1b2a97706dc9334ab44149bd718e4ac906a768. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4DW1670699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8223a58875407e02febd7c2e6a59be823fb4140e5d08a680b3de9d7e61c5bc1. 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/USA2P2407097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd359474a1bd7f1e67b93907f83b233dff3801ce74a724c1ab0faea7f5bc2fed1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TRA161800452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11923e514ffdf78044f876f33647bf440a1bf117fc9a51ca1b36936832b199da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92076479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903be7d8af7d1f47d7a1fe38bb3f16c02a8aadb1c0c6be836a9942849614118. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6N22137013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de6eaf120876f7d6eb414a753aa1f9799f45b23b873e5a6a11b4ed38b27d84. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0061400080.
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