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 0x12c9ed01a797f9ca0c5af1e3c52f88a12f3a0dd534627d417dda3b4bb24cbb30. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83e856cb-f859-4429-8dcb-5d6af9bbbde5.json and https://artists.proofprofile.net/proofs/artist/83e856cb-f859-4429-8dcb-5d6af9bbbde5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Wish I Knew No Astronomy When Stars Appear
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 0x78d6658b7e9744bf027161ad24d7021c21cedecdf3dde01be443bff6894f0321. 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/NLRI42300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322990829deedca8bc4357436d021566ae2e4d9da7a22f876a89f95f46b836d5. 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/NLRI42300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31234e5967cb100f41fb16d47f44d9b0694348e086b39de193672cc587f0b565. 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/NLRI42300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecce64f157f9ffc0281546d780a0aa6ec25e7e679f71a30e7c41cdb231831bd8. 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/NLRI42300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8e5ba7ccd917250eeb4d62dbec6f36edf98fd6e70ed01030a507a947dc7ff3. 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/NLRI42300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f961a9ebc0e72a8687987cbab18f94c58e55aa7b9c71e074966476268c102. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLRI42300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23881b855ab3fa6f74c45fc02581f7a877158b2d73200769057585b70ecba049. 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/GBMJG2215066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28df96424776cc0a77e6a3e773156e017a69545ef45d731f3117ea0800372ace. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMJG2308821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96ddb0bd25fea277451ff267f90b45b5a8552ac5d98fae62b830b3dfde65e9e. 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/GX3HH2259894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a328b53435d38de0cf8823d0362f908eab29272098ac0acc3742999c5eab396. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLQZ12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06eeccb3d3dea6c3bcfdcc99838a5a412665bc049a7b45785a6d909adf63acb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLQZ12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f026d274f857420118bbec78dfa0ec6c25b26a87816c3e2a682534f28bef7ac. 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/NLQZ12400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a4f86d1ec006bf19a731f93a78465c28027a4608e83ef2edccdcd7d5e458b9. 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/NLQZ12400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a1942c3980ddf06dd75e1cefd9bab6614d811fe662403c524838759485f54. 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/NLQZ12400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3b9b7e6fc44c1dbeedaedc74e23c33bef60fdd4eb4c6ddaa6868fda001648f. 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/NLQZ12400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b7d369078bfe525fa6f20f6b07529bbcc3232bbdf16b0c36bb3c4a949bd5d5. 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/NLQZ12400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27f156c604af16b6a5dc45b8a7ad3c37568e98433d003bfa07d934478a0c098. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLQZ12400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3569110826b7995a4e0fae0cdcda4277646bfc21781f41e43fb256d81f07d4e7. 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/NLQZ12400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2268730bbe5457218235848e133e05245a2c857904f9ea98bbb329dd33b87dc. 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/NLRI52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0137270673a6ebad0af823bd78f2fbe03c113c57c05ee9275d629761d23f14. 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/NLRI52000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7875e52983d65e7bc4007c8df35f357ef5311a8194fff96ab9b696edba38a8. 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/NLRI52000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e98d67ee190b0bf1415dde2b54e3f7097a12e5239503b04dba36da4b54dda74. 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/NLRI52000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f143b7b880145676a2157ae598b7e77750fb22ea22376534a4074c8fa95b04a. 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/NLQZ11900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fbbb8b5e9be87517b13bc95e5617a5573829527a0cf46da0a6fb947f410a3f. 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/NLQZ11900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee58bb14e83770d3d97ad8c555105b0893a3c340293d39449529459cf8b40f1. 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/NLQZ11900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cffeec69adfb852223d140fa093abcf41eeaf23a3ea75d2bd825176f29d5d1f. 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/NLB551800337.
Reinier Baas vs. Princess Discombobulatrix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322990829deedca8bc4357436d021566ae2e4d9da7a22f876a89f95f46b836d5. 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/NLRI42300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dff25afb23db7708fe28b0680e0a3508de2c5216f820f16fe4dd534904eda2d. 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/NLW9T1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb60f04654c1dac8757529d8c44a5b208dd240f1ae79f9996a9765647d32bf41. 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/NLW9T1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e129216d7d4ec6bf9b82b9ff162c3ba41a5a4035ae3aa86b56aea60bc1fff. 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/NLW9T1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3835eae45303e0db2b7d64fb479771ea411f487f136d80e702a5848fb41bcae9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLQZ12300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fca98e2570e8bb92a9f081c80464a6aa04bfa08da783f13976319dd2fd7016d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLQZ11600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ce62ca6baf5caf8b9a159fd58346883c101a1e09c0b05722994119a9a89be0. 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/DEEN41307410.
Dreams of Sand and Snow - And the Horse-Sized Cat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31816aac13d03eb0c6418a00c6c062d57607df0c5401942dea0a2307a76bf538. 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/BEZ251829301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9a167cd290a0308884635b2bd79b2330a07edadfeb4ae0b9a67474261dbfa7. 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/ES7711443502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaa5e1347667ac2d11712cb6a74dc5c53d4bdab92f136826e264c68b0c6921d. 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/ES7711443505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fea1fa3f8c370b316f9d3f45728b5f7260b2b4b65460138efcaafd6e5ab96c. 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/ES7711443508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad6fb793d3118d5ffefbee3b29a74d61dc16dcc4ef85b914f3710f997e8ae2. 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/NL4K92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590bf1eb1cd33295bb48fe6d493189f224ab1cbafbafce7cdf2068925a9f95ff. 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/ES7731602101.