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 0x66e25c3e0111d34e9202b35988411d1d78a091e6efa235b1caded0ccf931b362. 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/d8e6965d-2dba-42f7-bda8-4b490d5883da.json and https://artists.proofprofile.net/proofs/artist/d8e6965d-2dba-42f7-bda8-4b490d5883da.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 0xb0f7b1805af74bb6c67b33d53938d87cebb74239fb1035178ef64a696d575379. 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/USA2P1901526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9190d9cec3587f13b9a8b864ddb3590b178d158fdf3aaf4518a22d808f85d7a5. 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/USA2P1901529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503678153a72446c717fc852202c4ff8d0ea51569ab5b81229c5d90f7887a863. 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/USA2P1600428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fa957f6313297fcc33bf4e50d4aaa1c5457f59575ff2707070874252c873c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P1614839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35384615748b36096949ef729350df0261ab834a7ab9bdfb9b848a462220e17b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P1625217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a938a59a265db6650a18fdb303e7d7f77c0ca182bd0bde1642838267de127f6. 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/USA2P1625220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d073786014e891eadbdff81cb678a70a472421dbc6621eab6a778b2db2e5ae4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P1625221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988f60dc4645d188c70ef75598be4830cf24d208a631bf8f41156aaee74309a7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDE2418353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a43f4793007feeddb672a5927832e346f9efc8312b63f5ce2f9a8f1bcd87f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDD2438066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e840d7768bdb9f273eb15657d53918d0318b25b9b1b73f1894b4061c404e86e. 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/QZTV32418281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785f6edc9794ec77eab40269985fd57e1ba1089edca5769eca2b361eede98943. 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/USSGI2057001.
The Love You Left Behind (SunSquabi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3388f0daf5fdca88262e9058805c53e353b5026fd7702eed59cf1086b0ada683. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADI1774365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b8560803224270ace94fd6d0c9ce9565bab3564efa256cdf6d4cd8002763b6. 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/USQY51745351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ba58021e86c3c8ef3662b4a2f71f014fd1e23eb6c819d825c020c41605d6dd. 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/USQY51614414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955b5fc6e28ceaa61251b42eae683d1faff61ce0e887f3cd2dc3406e9df8fb0. 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/USQY51723882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977cd16951533c0e1eaafe9e438ec9a550f9660a4fbea080892414e312e17a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQY51710728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837da06864a3825b5d97626b6532a2c545327eb1dbd360f4fbbf8ca40db59de. 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/USQY51723883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd21628ae8ad161c89f2c4048340d4a14f7fca6e7509d6f4f6f879b0bc08e72. 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/TCAEC1923186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e77af94aa0c38394712e3e56e7fb9e385b2be1b823226f2f55381dda007957e. 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/TCAEC1923196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f18fc6e6bebbabf0709ebbc0a05d3b2a1b7ba3b2ef5d5997e66ff87b8aeea8. 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/GBRKQ2576953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe479a942d3f6fb4713ae7c58ec9bf7a8667d72787801912a0e5700e862224bbf. 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/USQY51539575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efa1fa387881d62915d9cdf342685b2560f681eaae9b99601488aead9f0d490. 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/USQY51766100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd93706658e90af9d873cf2c92942953e309535ff8ed9a534def50ffa1db6e0f. 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/USA2P1690260.