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 0x184b03db73737dbffa1e0e7b720ea78e2cc941e505b19a37b559e0037132346e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8f82aea-72b3-446c-abdf-7bd427f4e711.json and https://artists.proofprofile.net/proofs/artist/c8f82aea-72b3-446c-abdf-7bd427f4e711.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 0xcad755eaf42cf77e6b8c5c06aec51a7c7275e1bb2628e04f9432af8c9b546a09. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72305015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fae95ebd0a2686d5c0689d9af773f503e488e8f2c5009c2ce7a104eac1020d. 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/USUM72115863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad3963f892489632554a9435765fdb0ff64cdcec073b01358211d3bf5959396. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USUM72311732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eb90b597480c602d79aff59b359de084966c5296a26af7b4ac790b8745e936. 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/USUM72311733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f173f7124b83dc34601774a077ec86dd811a79fb2a8b94c1a9c019bcb01164. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUM72311734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03685ab2c4523171fb63694690608c0b830ebd6e0312b3d9a96d5f051e1f595d. 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/USUM72302573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda19d6d473f263e21a14a6da9d7f7301045ba5dbcc6de379e2bfd5b577fd6b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TW2408822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88ddcda7cb3f60859e9341b9e4c9ce4d8dc70e2373a98726a13ded8d1303ae1. 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/USLD91755415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956d648b49e750f29ef38cb534893efe5eb82fad17f7fb7df736a28057b5cca2. 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/USUM72318219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1344cf5c1407e069fa0ca1536f843537122a85c300ba4a7f8539cd95d83cf54d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USZXT1580803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c36a0723043e210d1ce27ee25911ecedb6807233aaf87915e676da0558844b9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:23:50Z), 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/USZXT1580801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f66c59162c189c016ed8ec3794f948f50c3d8351e87dffd36a07723933dcd27. 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/USUM72318218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83728806a19be04f68cf754ee5264280bd7e0ba97cbe29b40865a7a35d8ecf8a. 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/USUM72312300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8e930a170a49c40eccb52593612fbae86e84f17f3de61d1cea3de68ff44d36. 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/CLA1D2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338395a2fc85938d6b5689347376b43c66759d2695cac0d05ccf77c0884107f0. 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/USUM72318210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3844fe5128765f6859f4b6b19ae3c86de4ae31566e032443246da9ace8b1a6b7. 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/USUM72100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5386258337e2d2ad206ed365bb996dde51714cf6794d5b90e650a7e85553e3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:52:15Z), 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/USUG12403474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7cc6ead91ddd32826a2f6bdc72ab8f7e7158fca032044f00844f94f4af6491. 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/CLA1D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0772a718ad20bcfdca8abee8da7da0edc22930d83b7ed58665853ec7db8de. 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/QZZ662363461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61a1c3760a37d584281e64406bbecfdac04df02f48f6e8759103e3af332e80a. 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/TCAGU2325657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7232432d7fa1b2743b190ed3790a272f9f73f5963dce66c7d78cf2d6992a19b8. 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/QM4TX2197296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61318b1b4f7787a5c7c8d88e49244f0c665995a6e93e2066fd31a7a86803b3. 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/QM4TW2198946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996a7a8f408b130c9fd886507f76b99a2782282f3c2d0ad3e4e7439c853c6c6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZHN22300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72f8f7009ffa44c84a2ddf98e122241a9e66921637f6511c00eb454e635261b. 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/QZHN22300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb54b399ede44debc6bcc4ee5bccd30ead381ab0ba06631834436f9ec08d40. 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/QZHN22300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f9c1604493ab663138f1f3301e6437b64140d6da5b937ee7a9163ead59299. 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/QZHN22300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4513697b9b541026d99cda0355b929662d303b4d1bdf29ed30bdac29b4b2e. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/AUMEV2301496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe6aec175ef6b270a7418ca20e3b8c34cd60a4959b0a9e06b68f2bb76ad876. 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/QZHN22300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddd730ff8baf5bb2ff8b3b63aef11556e3666d3bb9293573bf31bc77a7ff1e9. 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/QZHN22300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4f9e5ead3c00808b2c336de7ad60d9ac2e0c242b2fdfe78d70200abc4604b. 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/QZHN22300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3180e13b1af8f0ff144a3f4011dd17b6c35b16cd5a3bbad05fde741b3a5a59d9. 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/QZHN22300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18d68b5e26d030587fc3bba4dfe5ecfb26892a936fbb5a375aefb7055300018. 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/QZHN22300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5c3c39f3f4c1674aad558078172164f820eba5a818355e1833a046c3ccfeb3. 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/QZHN22300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f9d3df29ce8265fe72b4beb190abb55d5312f5d6ebbed4c1a31e6bd65b574. 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/QZHN22300105.