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 0x8d4dc7eb17a029032b6c388385a9dbc637c2be452e88ccf5e5251ae54e6f2913. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f841813c-d94c-40c7-89e9-dca9f37f4fb1.json and https://artists.proofprofile.net/proofs/artist/f841813c-d94c-40c7-89e9-dca9f37f4fb1.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 0xe9cc839d1115b3ef461c7eb05b377a5933ff33c89e1b764e1bc61ac59dadc777. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZHNB2487706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2789f83078471abdc37017227beceae374af1888cf57289da701b5a5aafbc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNB2487705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93595c2cce06bc48d4241c4ee273b19b555ac07a18675a19eb724abf985da56b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNB2487704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237b5026fcb688b5abf9326cf53945c1a3bd0fc494746ec8d8d7204478884b91. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:21Z), 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/QZHNC2490761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea72f86b786893432ec0eaf90bf63dfe807dede0aef1635d971277d14f8c35ec. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:55Z), 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/QZHNC2490758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eae876608f006a96ff7748f9c41b91d3ef951f9a7cf012ab0b082af84db9674. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:23Z), 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/QZHNC2488968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948682185371959ac7cb90d49726cc6f629d70da1f554b276fae5ac7d2e6c17e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:49Z), 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/QZHNC2490755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483555f926c78db343c676d5946ec45b6e5790560ad6a75cdaeffe7f2835988. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:27Z), 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/QZHNC2490765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758013e63a1f885467f684293ed80e6a814233862b2db05d780dede7f26a1207. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6Q2410298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5391d16ec5434be221aae6c8cf47e3e3d7c17f09201fdd756a638b0d7f447e40. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:25Z), 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/QZK6Q2403050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14fe66f1f3d8c01d52ad2e14cba0efa64265f9bad0b8bc35364914e72aac90. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6Q2410295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd6037e1c93a4a31252332a868fa0a3aeb73abfb43a93a015f2ded7c45153cc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:23Z), 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/QZK6Q2410300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9ccf24f4aa899f5899a54f073ffcc7f8ce08fe1d3ebe90de4efc3d7eda750. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:23Z), 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/QZK6Q2409312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0c3cc4b258dd73cfd741655c074b1dc36be1c4b6d442616bd7b8d315c9d993. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:15Z), 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/QZK6M2459256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7495b86fb7fb138eae695cc64755c94dd3cdfeda3a85ba8dcd01c6f9898e0d1d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6M2459000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977360034957d592d725278752897c42d3750078fe004bd7afe7c170cfd40a13. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6M2458476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a4c505912140806218533e888c64a971e159bdc332fb0cca1bf1efbd4255b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:06Z), 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/QZK6M2459596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a7441f9bc78e42d1fb9723ec04928d7c86b40830c9d2c5c68c86c90d01049. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7R2530876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c063868e09f4490f1aa23be2e89f1154c3c9fe76a9a08938bb1c957bab90d1. 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/QZZ7R2533473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457df571a490ba589cb0040b363ff04151ad5995c2c1f012f8a494ec95b10848. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZZ7R2533423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1e1019551c503abdeef6d2ad48f7d0a9e9591664b47554aa0e6ad289bd8cf. 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/QZZ7R2533475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9737a35b8cafcfc39421e9df76aec9fc7330d7623bafa9680b10d4fef14e97. 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/QZZ7R2533431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b470e85c1a729be2d224da0b250e918ac0d32c436d35a11916f879c20f77f9d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7R2533461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ac51379325cf83721ca9858974e1daaa3248b78ab26e9ef686dab481f83db. 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/QZZ7R2533472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a5f7c668c4e3f3301926d607744fdd6ccd0cf305c69cc6c2d8b645c06c5f3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7W2569458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6994438c2b14c97034d0232889ce92f6542102ec79280ef149ea4173aa196b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:04Z), 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/QZZ7W2564923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe434969673c5bb35fe76ac7eb0ce912218adddc458cfb53d457c5473c242bdb9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7W2567383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5117224f8d8255df865596cff366d47caec718b29b4912971f537177febc359. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2569441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77482dc58b93e8eed972e2551832aebd92bac8dee99af25e9fa87d085743b1c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:44:49Z), 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/QZZ7W2564887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f31069c77b90a45cda94e4632cfde54c4ffbed684da18185f00db68f5fb6412. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7W2564902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4029ef14783fade3b1edd633d4dedd49550437f3d9e6c537312490abedf7ca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2569460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26cce150f9af60ced0f6c57dbba0d2d134650d91a4b79eb29d0e065fccfe3f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7W2567382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edd0025d60a7d24b7fcdf0585f4f46e5ed0d80b342088d0d8b883ddb339b114. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7W2569459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113ae89a3636bd738790a8ba2c26a9ace8b3660e954072eb99c2eb23240bbfae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7W2569446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66807d74084ac54c10ae6d05eae925ef21149991c0f89abc9c9a83e3a6ceef46. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7W2567378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88058776c9fc621269b9de21a66d03df656a840c9f2619a59fe19300ac0b5533. 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/QZZ7W2569453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bed81991113ff0d8c0bff0b46f7cf64cf3349751f243d870724d41d3557ac7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ7W2564924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216beb132e3a149ba9f6293b095d5d18d320dea61fbddd861ba9a1f8556eed4e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:08Z), 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/QZZ7W2567361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed689fd52887de7eeb593790e9e0ffdd802a4fa0cc1d736be1cfdbae2972254d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:17Z), 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/QZZ7W2571994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf641c92c3b7ef9f65d2d750acd57a40422bead5d0d8689f60ebbe79f214aa66c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7W2569433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff7939bd6b87ecbc601beab7b4f1d08289573effb48f09afe454b881e40d290. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:45Z), 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/QZZ7W2569557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e94d71d730aececdbda7af73702953b8d143493041f502c0eb03ea72c11c4f. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZZ7W2569515.