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 0x56c7b4e8848b843e2fa957a3e4966625e5d31a2a1e31e034f254d69ee8d510d5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2294191-7343-4006-b7f2-7a2d8e45fd01.json and https://artists.proofprofile.net/proofs/artist/d2294191-7343-4006-b7f2-7a2d8e45fd01.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 0x04678ccf03042dab3d4c3a2f192029276543e0cf50b9d5fcd9e9c1cbcc3deae4. 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/BEJD32100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fffdcbe8e03d594ecb0e17cd48ca87cd43adf49655d7e864c082cffede77db. 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/FRPFO1800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f98c9989007c14700ba3bfd40cfab5b7227fcf24cbbab642ec1d981a8e1957. 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/FRPFO1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd0dc7e468bcee8f540a275297ed76d4dab7302af2e725acfc293ad92851b50. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRPFO1800010.
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 0x28e86d54dba7d50f9e3d8b84d1a1218c4aeddb1bad67df8efbbc0627cd97d317. 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/FRR642001757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c60cfad2cede8916151c515c849dcb5fa31551410564d5eadd5ec05639d8f. 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/FRR642001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd2936dd0d72ca89ad6b658dce9349c87168d9e1be01157403d847dc5b7bf92. 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/FRR642001759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275f15b17e2969b9eb6e91d4a59eadd7f9c0c23a3b6d671457af6348735abe9. 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/FRR642001760.
A Woman I Don't Know - Le Wanderer Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d0dc12db90d5cc7dce1755a0157cdc5c21dfe6316118e25fd7e2677460ee6f. 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/FRR642001761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e927d9d2b752e5b8bdfa5cb9e740c2e34b02aab1b67d9b71883508dc99d7d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRR642001762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c0a2c90e84329fc3ba2731dcb5d80a73e83c90415e748ff896958e7c7b6ef8. 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/FRR642001763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d6c36201bce9cad54f2b8e823c717013f59e42225267e5e1604b9c1cf8402. 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/FRR642001765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2729b142568c0f422a4736af63d461bc1afdb9690db4e47f0f8b5cfe66b0a10c. 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/FRR642000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce0817911a34e4281cdae1e0753bc3a5a76182703a446dc9fe24cc41c381d9. 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/FR9W12221645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51242cba0c3d0e19e87b376241f30ae3d234b9981b1e7c2b546140f788a62992. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR9W12221648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4782a95b14b689913eb251e08779d96f56415a749f017dfa159e7ef1f5f9c7b. 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/NLCK41061873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77515e990d1637ad1e37f22f7f40e8e60d6831973a3b91880bdba48a69d1a80. 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/NLCK41061876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3822f919a443417f547a92565b5400da1d7c8b7eed24ef0017e6b818dfbd5701. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NLCK41061878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3e692a3820b9a98c2e2a2b9d82a884a252da4a363cc8352108ad4714403bd5. 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/QMDA72338104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0846858fd9f575d6d1c1acd4727c252d07625422ea892e63e64c74e421dc8a. 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/FRPZ92510340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c60cfad2cede8916151c515c849dcb5fa31551410564d5eadd5ec05639d8f. 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/FRR642001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275f15b17e2969b9eb6e91d4a59eadd7f9c0c23a3b6d671457af6348735abe9. 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/FRR642001760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e927d9d2b752e5b8bdfa5cb9e740c2e34b02aab1b67d9b71883508dc99d7d. 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/FRR642001762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d6c36201bce9cad54f2b8e823c717013f59e42225267e5e1604b9c1cf8402. 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/FRR642001765.