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 0xc0081c75ef55161283d5b6a32950f2d936f55a660ac0cda057ccc12361222b31. 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/a613f42b-5148-4e32-b362-55e907c8fe20.json and https://artists.proofprofile.net/proofs/artist/a613f42b-5148-4e32-b362-55e907c8fe20.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 0x509ede28975da8dabfaca63ada0e01bdc9d4a179ca9b7f247e82e55666e36d27. 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/FRX201642372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba327f1df5f12d822f1f65bfdad085d4c0d3651d269b4cbb2f0f24074b64594. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:11Z), 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/DEQ121113545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16a197517d95a0091f73e6e24d337ea4ca3b0e79926460afb300743d6e423fd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:23Z), 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/DEQ121113546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f4580f50a351ff76065767716959a7daf5e756bb075b07459871317b26d563. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:59:07Z), 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/PLC691101756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582391d14b4e8161c6cc42e1c8895bc976d33a030030fb392f676ad15a3bbb67. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:23:08Z), 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/PLC691101759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f976941b5546143e5bbdeee0fb9cacfab4e1745cdeca3349e4cd62b3a1cd1f. 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/PLC691101763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe18b2ca8688d8f00391641a45cbc4a60e34d7e104dbaefc3a6845c7e82e77cc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLC691101765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0016870effe381c4ddb4b22678121aab3aa849490ad78bfb32be57e97990592f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:04Z), 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/USA2B1401703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977316cdf86eb79c4cab24dba0e2adde59cfa6a2525a9d54c225a337d9d96ba2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USA2B1401705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc82ebfc5f1fd3a565552ee39de1fbde1d990f1bbfc9dcc55914b0840937b4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/PLL021500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2239b6caeb9b8b081fcc7ed69200f812bcd3c72b3074c5c27681a70a8b3768a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:14Z), 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/PLC591800174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59380c948eac497b03777c00923d66abdd5c85fbb24720b0cfb8378930182ff3. 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/PLC591800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa947c392252433c30ad56d03b576fce10f02c18a4c2305963865f8535aa7b906. 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/PLC591800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2274eeeab9719d6c6f9169d015c9181143d7c163871b781a87e4b95e1bea4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T18:00:44Z), 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/QMDA72143509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b70a1817c75b19ea63f51a333cba7329217c6b3230525a991c7667eba97fc92. 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/QMDA72143510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1a113e873b344bda2ea8946b0194dda252d2deb5f7c4e7a7a6395cd5f7a562. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEZ651348158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad1c03079e18c948ba9371fe396e2eeb7d1eb19011abb4945c5bdbac397ca69. 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/UKB3T1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fe08dd8a42a6c36b38478e8958feebf2f852dac6d743de3fb4d46009e4c476. 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/PLA391715406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa983aa8cd177716e54afe26a59dba99dc0bbb4f2089a8ca7897ee96bbe2f423. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEZ651348155.
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 0x6f2830a7b69835bcf4ae00dc6ed7d4a10d599e4ca441b199dffe2e9096cae336. 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/FRU701400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ddc65766c3cc63b93c3225ad07e806c6e7250e40fa4e91b9530d13af4f09c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEQ121113547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe475fb2be3c77d2c5f4e083d7b130b51ea2b238a7f8f0e18acd784b330c3b3. 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/PLI292000132.
Kitsuné Soleil Mix 2 by Gildas Kitsuné & Jerry Bouthier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78b6f234c4af122e35b854143cc0e23fa8f2ab63bd76f91f40beb850da9200. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRU701300069.
Through Blue (James Curd Remix) [feat. Kamp!]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881e890f9af0e94e065af03720f67333488a924d41ec46dffc7cd6b0f2b9e0c2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBS3T1400021.