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 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 0x4517264e1135b85f31f7c730cae63c16cb8462793652ce5717ee613668735d54. 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/e2d1d971-b3a8-496a-8e12-7d5e3f539f1d.json and https://artists.proofprofile.net/proofs/artist/e2d1d971-b3a8-496a-8e12-7d5e3f539f1d.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 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 0x48df220dcfc674d447109e06e57a62fba1aac21c9794e559db68f47d50f638f7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMPKX1612497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d08d5b86fd5d92e325f77780647b95fabec9d790d22032c67ad2d5695fc77bc. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/UST8K1676485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f419b644f0c2b1366e58ca295fe38f44b2d7d2c2a8deb41c9ab0afdb1f1879. 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/USA2P1800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42566a8213ad690f60dde9f49e6636e68928193c052fce55f2e802d4c0b6755c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USQY51783757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631d870992666c83baf46e6fd87694d94e29ee4b6557d48889c9a1ae1b37791d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P1804770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218a08761b960a1aa88a2d24ef42719dc21608769e4fae9deb1aef2a025d0275. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USA2P1831448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d6a266b0eea63cc7a73c1f5f76f030432ebb423ba270cbd2534f788c010d6. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USA2P1831449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f9b593ceff60378df9bdb908f148bc7a5c531268a515f05f71f2eb9a3db7a. 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/TCAFH2060520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6723ecfef6ed8ea8fb2843a85a3e6f7c0d6a7a0111333c9bcb2dd4a733cb0e0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAFH2060483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24470a4fc670eba135d7c7fcf90c6ceeec81ff32619cd32acf58af69019ee757. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCAFH2060804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6448977255d7a87f71819de85a8dc15d5e797aee296a4f96250803b66dd663. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/GBKPL2096592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6400ed73d0983d937e517d8d749aef02c591e951fdba9962285ec30dcd56ff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHNA2117192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b3aeb93deae28b53de6b36950b47c9883a85fbc4b58e52c43419f672286038. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZMEM2150886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de750f76d9aefb3b9f6774fbf0d814b43150950d2ca72e7c35f34deb18fd655. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWT2280583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1b62d40326263bbbab3508f06e90484d0bb10de786ca33ccc553ea0013e2d. 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/QZFYX2395621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd52e05c9f11f1cf7cd23afbffa27e708283bd05fc579763af4129771353b4. 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/QZK6H2304198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342be5e62d7928be26b6caa1d4fc5861a043701685d23b866f036f5c58f81b2e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCACL1624715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9403f781a227a7c23dca78d0f1e0b1e7403be949d5385868cd5b7643c9213634. 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/QZK6H2123754.
Colors (Xan Griffin Remix) [feat. Jackie Rain]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c55bd68fa38f70a0a8b876b9887d4e8bd678c393e33def87dbf589c2303ab52. 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/TCACM1622678.
Runaway (feat. 3LAU) - Xan Griffin Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310a3ead9d446eaed5fcf16e0045cd7e39b65ccdcc79d65e4a2c5db8ca1afecc. 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/USDM31683704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef752b65795013b716ef60e61fa6a10ed03f7b45b1c4ab08517836c410de8c0. 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/USUG12208575.