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 0xce409a1d562dcdecde7b6b7b0f4f57375f8409ffd156df39a369ad12d4884a42. 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/462c11ee-38fc-4cde-8810-930f3815526c.json and https://artists.proofprofile.net/proofs/artist/462c11ee-38fc-4cde-8810-930f3815526c.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 0x662b3352df7f00fe2a92f393359ca817b9718503fcff54334cce24d61e0ffd78. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBUM72208003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8283c2618ce7b029be545511fcb6cc76cab8d99c5695d4e2106f733a342a667. 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/GBUM72207543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fba5c0c20970e561cfc2c239c9be53b7b03adfa1d52c505067ac2c189cb63d6. 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/DECE72302444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefb79c6a4bfe2162d8cf9512b7dc24b56993e75686f6e0fa27890a037500122. 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/GBUM72208702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19519cc7593ceaed75075cc8e4827b59921ab06d46735c8188ba93d90c68063. 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/GBUM72201156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33196f019e847b24d0ff2a59d36feebef782a65de1e8132db5eddcc8b3e757cc. 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/DECE72303292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89537308f65c07afea3b27e0dab4ec990c5993501a825680da210e92bb9a8b66. 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/GBUM72207141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24584392de26a44e20d2d3f2f70278dfe4016f2fa378ea82e235d5d9ec67778. 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/GBUM72201165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbc76a33edc3ccc4a1f41e89a1228e349d2f5cee76e939f4a8f2241545a38e. 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/DECE72303293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65267d2415a08ded0b2f41cba5e2094d26470d64ef9ba3b7d4bd281038dc832d. 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/DECE72400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c2dbfaa079840fe3e8e92b66df1c0005ccdab2b2ed7480c535fe3b0f3d8514. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DECE72400731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5a09ad097c884e6e3a22255a4bae8873ca13f2612ffef5e6049f5b603bc35e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DECE72400733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f54e2307a2a9ae6d0455add6b93ca9b6a428bc3cf43bdf941f2449611e0a156. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DECE72400734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41549f413c62152a7f39e13fcff1d230c236c5eb00b3d96abf1ded8d3c297401. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DECE72400735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2208f541c7c3f2ac97ab0528673730728d66248f7e43e58e05ae8d8e732fa65b. 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/DECE72400736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53298b7363830236c071412f1c966e90ae5f6a5ba775311b4781a9f3b91db3. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DECE72400737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1ad2647c463e3d0a292cecd7807d9e4668195e90f808fb4c266639e5d2982f. 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/DECE72400738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5120f8c78955a062cad5958f22e33d0c93b77d76879bc0c22573839b86acc1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBUM72108999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a1dde5c26ecc83674999a9a2c15b3533ef1e4996faf8df9f5cc2387d184a17. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DECE72400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65267d2415a08ded0b2f41cba5e2094d26470d64ef9ba3b7d4bd281038dc832d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DECE72400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5a09ad097c884e6e3a22255a4bae8873ca13f2612ffef5e6049f5b603bc35e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DECE72400733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b987eb81e28cfb316310e66f0483ad4453e6451ff53c10b72b64e15ab7abdec. 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/DECE72400739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef690952bd6ec207a43fb07c5587c4d69e0e616171e207b346db8cd1579024b6. 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/QM4TW2138590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cbc76a33edc3ccc4a1f41e89a1228e349d2f5cee76e939f4a8f2241545a38e. 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/DECE72303293.