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 0xf9712b6e21301deb11ad29e8ef176a3d40daf71874a9597016688b573b611291. 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/4a0bae79-e027-43c8-872f-894f99072940.json and https://artists.proofprofile.net/proofs/artist/4a0bae79-e027-43c8-872f-894f99072940.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 0x311c1245e8894f4c621dfa343c020f82a71b8f78b2a210314c0b3ee8cd7f5ef4. 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/GB3UD0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c6cd832bae59feb263117ed06816fc4edc19cffda56fa3c5c459004cc1e9fd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEY470940896.
When I Hear That Music (Reprise) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda74650f4a289c32dd16396512f3bd0a16a423f54ea82a30a96f4a820a76f9b. 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/DEY470940900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb3f83efb0ae9c7efd779469f39a8e2e042d972e943167e5ba9fc3ceca70b19. 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/GB2XE1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7de21926205e26916b1833db61c52ad5ad0e3e96e2c289937103089dacf915. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GB2XE1800009.
Michael The Lion x Amy Douglas (Remixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee883a970530606c93459d05c875dea5144de088d41d4b9d00c9498132295519. 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/USA2P2113196.
Eskimonde - A Decade Of Eskimo Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c804e83f81a23c4c13e869355ce5ff9f3cc345fc628f0d25e91c13065cc1335. 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/BEN580900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248f368e4d8cec5aad5c65d99e235ae1309885a7f276e6b758d933866cb6f744. 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/ESA041103721.
Is this All it Seems? - Ron Basejam Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10bdd7acdedfe1ace2b6478ac1e22032b4e09a77dc01f9a7b636857144983f. 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/DEG932201929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb61e04217ad9d18ac73735b0311f6928bb811dc9f0b817173849bb7f970e1ca. 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/GBJKH0800413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b433944cc88149839c9cd777cf405e904a5bf1d649ecb502c7e141b002c38d. 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/DEGE91900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2d9a38f0d8987ad92302ec7572f01e703106ba42d3e4c7ac5eca35c1afc3c0. 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/DEY471812301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c6c23da333dc5669ebf82b010facd940aeaa77aa8f494d6662197fd0e4b32. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEY470944407.
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 0x0124d82bbbd915153fdd3e9f6380bdae8a6cc6297bebeb9184d175a38288ce6f. 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/DEM091700028.
Is this All it Seems? - Ron Basejam Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f64094c84c8db2003d9e82626aec3502e0d4d49a36cead0f6ed1c0b30452d41. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEG932201934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aac4c73a388fb3498e11e8539a8b79eb6e716ad8b89ef71723435c0c8f3d5eb. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBEWY0900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a8482c62ed3b095595097bb952ce0537e7a90dce718f6721391fa55fa15718. 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/DEG931591456.