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 0xeef35831ffccb21293aa06d17153726e648ca670b4b540edab68b505f7b0c385. 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/349c1303-4a20-44b7-a263-f5b70eb3acc0.json and https://artists.proofprofile.net/proofs/artist/349c1303-4a20-44b7-a263-f5b70eb3acc0.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 0xdea38212cc6cf055f941dab99385efef356a6703fb4e90733e4ebc6fa0e5fed9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEL022207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4736f3aac7b9e18bac33f856b0448df412261da4a5790b4809e6ea0dc2113433. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEL022207002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d6a257ccb405181bb57900d65c4b4bb0f2f536b3f235a1670db44773e63545. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEL022207003.
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
And Stay With Me There Forever (David Mayer Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e976150164fc029e6cce7288d4d048c873dd732bb77962989d964cecc7b3ac. 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/ZAYJ11800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef0cba5a71c0e2134b860c2c82ad10a1a0863fdc3a795ff858739a63c797cd9. 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/DEW872303285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6070bd6ce97c64cc0e403dc635d0909628549fdce49f44010ac97bb91f73647. 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/DEW872303286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa4dda30c15689cc0e803042caea652bae7c5560d7f77de620aaba84fced364. 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/QMBZ92268758.
Luna, Rojo & Palmera - Anja Schneider Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3884831a2e7a965d7bf2d5f6deb49a188aa15ea0d424951540fa2fae56b214a3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472176342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d96c3672688aacd66686372f2eb96ea4d66c37d0a65e74582896dd7ede4836. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472176343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a5a4786f3d9d33b5a435d53088029449978c70a4042618b1ca2c28a9d704f. 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/DEGL62100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ad91a5b772edbb33f06fc5b1adb2be5cd1826cb064b0066e81bed7f72081b. 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/US83Z2003561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f23d7e54d48c973aecf9067864fc2efebb3f1f92c3090acf5c1a1bb0901319. 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/US83Z2003562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ad568fca49b6333b58fb444b3774f25015208e526a335c51776f561cafcb0c. 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/DEL021907015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0c63ab51f55a43edd49400bd2cc721963c8926b6d546ecaca206028acd16d6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEL021907016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20c9a6ca9db738d1f879f53a538e3eedbe4d2fc4ac47fa51a32dc4aac89ddb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEL021907021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd4bcc8f57b23ae9dc301e5fa44e4e205befc95105b5a071f3767af95bba35c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEL021907020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f0acf4eb47e4d86eafa8543959e806ac8578f86969c39cc4e9ea081519d71d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEU671900331.
Sondela feat. Xolisa - Auntie Flo Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b1e29aa7071eafcaa5741b14e0cee469efe815065b74fca0684d9f2c1f5c8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:23Z), 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/DEU671900718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2cdc0eea10b2646a13d40f97ea1f26c5c20e7a4d4244f3c7f597d1e53da95. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/DEU671900332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d88190891fe7d73ce8d853c0f1deefe2092461461c7e0a49e81c85b9450507c. 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/DEU671900382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916abf371cc95495ef297c6271c3080dd329dcb00c9bba518d9b6343cc7b62cd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEU671900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc603ce89bb2463adecce616b2b77b649e8b97cb4030d8c30bea58f1cfeb3e3db. 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/DEL021807011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc48cca9ec1621b67d69365cdd55bc2801cb0c9a6fad6350aab65c59d9cc973e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEL021807013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913c3085f4ccaa4c5b5e6454b5d6b456432f946dfebbb5e180561fe701f596f. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEL021807012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de03ad4f9c7fd929cb5cddecc7a093a45995be9304df9a696cdf40351ab72a9. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEL021807014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ba8ed2427f9fbc31fc48be9ea277c3ae401d98e4a20e9a7d7577b4bcf3560c. 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/DEU671702764.
Sondela feat. Xolisa - Floyd Lavine's Drumversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f851479b855ff746ed6484551fb8cb1a81bbfc3951c05b03c934b7eb4d46528. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEU671702766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cc746c5644ea80ec0452c3f20e529d9fff7c713e42520ea8d898f6eadaa8cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU671703278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1289d29a4059f9635c2df9f3cbea22dedc64542fd663940000b09486db0c88ce. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEU671702765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c17dafaf3202c68a4013bdcffdd792ad81674077ecb67338d35c858fd2a4e79. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z1807811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58567f5b1dd9cb768c434a95d4b09e651db27c488a28c426066eae0fa7dd7d9. 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/US83Z1807812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c0593845c2f527654ba959eff10227b82555fd95964f393755be758171ba7f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z1807813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e8c483145748610f34601d618cff8a2cb95fdc67cc90c59f4db514241933d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEU671701918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235e04b261ca8e63eed43c01da1781118b47fa3e22e46b20663e60fe5aaaacbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAF71313446.