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 0x4d6b1e5d0ddc7a08a425f6239b8a593c3c10483e8e9b3f763f0281a9457fd5ec. 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/09bace23-02b8-485f-9245-93b09ec175c0.json and https://artists.proofprofile.net/proofs/artist/09bace23-02b8-485f-9245-93b09ec175c0.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 0x3882c5c29f0a9b4b1346b45041c422287942d554d55c5f9f922b64e1d16de342. 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/QZTRX2327445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f07acb212380fa3ef57e2d942318bb329554da8bc98e2e7144b10e1df23c352. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES64E2512044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf5fd2e84c9f546936e83475029389817d1b8c0f9d0d5f22df91a326bef75f1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZTRX2327557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a1a541c5f4bfaff5f003460f40f4447b209db48702cb2dab2323c5ffd8667. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:52:00Z), 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/GBRKQ2492700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d7d649d61635b83c1407f2733428e76fdb81158f5534e55187304bb172b3e9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBRKQ2490898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd3cbbb630c128ecf7b6a9f02d1c2c96ef018b870164bb50c2b99b1611d17ae. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBRKQ2381204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e73e8363782feee698b7fa58c2a37879165a3837b6d438136b267ae98b8037. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:18Z), 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/QZSYP2497504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e86750558109044ad86ba528ac56af1668a849af246b7db8c05b4079c7d51b7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTV32336194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ccb329a71765e095a14c82b4b93e5ef69bf44e5796efc549eea04cfbaf3a1c. 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/GBRKQ2361755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86986689a80e8ecb273d0e6eac1bb52876bbbabcc612db9c6b98a31ea3aed0b. 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/GBRKQ2490909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f21a5ddd0c4c8171913a014a3c6f6bd58bf0aab3b1c92371636f682f756e11. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBWUL2332153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3eeb8b44dade3f1d1b8e5552f38245236367b992235c9b99e277b39073e481. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBWUL2332154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea83984ea07a54044c20c0aa1dd363dea8aabe9f02dd489647ee47249be827. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBWUL2332150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ab0a6f8e47bea02841a69cf95dc4186dc417043b7e185f24bda33ac6a8f846. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:12:00Z), 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/GBRKQ2361802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea230dae90d648fae53c253a77847aa279ed3c05757f51842ded66c8b9c51f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBRKQ2391381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa7114df35378e49ca65725abefc4af9ccbd90a9c353ccf2ead95df7c3d5d41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:19Z), 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/QZTRX2327927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b910fd68b1f8bbfa25649820d6fa4c9d7f913c06479191ebec1b1a97ac4e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:36Z), 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/GBRKQ2365597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3170f5d4a6173c79cfe7c0daf824911c1ade1e49b97050e6cdc822c0428926f9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBRKQ2391396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28f52a16c53fdfaa706e7ee6f83a18620f25a4eae2ce1ca689968768ee48234. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZZ8B2348759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9b27eec45706317d172a0e41c5ba4df77414da5c28f41bb279ceef9185fcc3. 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/QZSYP2424308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480d4da43f51fa818f073368dc510288bd94ab1dfcaddbcd1958b0666fbd1d0. 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/GBRKQ2381166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0eb9a704cc0c45016f36241e3649b9b04649c9deced0dc9f3f60ce19bec00f. 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/GBRKQ2490860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e787d735896bbf1a843b9e261410bb3398324cd4f93b080de95a317ed1a7cb0. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBRKQ2341756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d290bfd77616ad90b50332766bd7727ee24d7e95ce805306b4f1f7861f5771e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZSYP2478089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764cc69e253581c9de1d374b2afd3d245db1189c39e52a4b4740bdff2baec66. 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/GBRKQ2491106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64d8e40360f9e19349c3e14acb43f368b39216aaa360bcb7a2b97e7f13b0f90. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZQAY2487802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d8367169a83faaba1acf0fa4eadfb4600c286d63602c942b1442ee9870dc9c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZQAY2430025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730f2875a40a24eda00f4b7b5cda7dc33a34ea10634f72369d844a273408197f. 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/QZQAY2417424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b3b903231098324ee4b02f27b07ac1d5078399100e8336e5ce7044127e6cf3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZQAY2497360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3841ff70e028c03eb1d92dc68f3441e345cd14c9dfdd26b0fa7fa963b8b70583. 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/QZQAY2458022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a60a534f7fa839f2d1fdc35f7d691f13a292140305acc400633c5379f18ce02. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBRKQ2490787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa75b559ab8169ea5d99071b1d542a56dbd888e91ce4487f07fad4f743f67d51. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZQAY2466680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41291a899eebeb9e459e0646343fb122f3ad6b86efaf2c9f49a459596236a53a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:10:10Z), 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/QZQAY2465162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05157ebe047303d40da745df5ae420227836aabce97e9560d796974c8d2f775. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZQAY2407214.