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 0x1396f80dea19c1242b4bacb89abc16083809d7b6f04f1188946d68b75f9f232d. 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/7739ff79-bdb4-473c-bf18-6682554dfe94.json and https://artists.proofprofile.net/proofs/artist/7739ff79-bdb4-473c-bf18-6682554dfe94.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 0x81037f1cfdbe6518639be1404976b0a2102da2db778efe1eab2b53b608fd7e90. 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/IL6190700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca05054c13fa35aa6a71876cebcf90b25b9c514ca32b4ecfb8f67eb9e21c2ee1. 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/IL6190700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8bd54e33ab1a51f09c838be703a893d49af0d51e65dbb226d271b105587df5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:08Z), 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/IL6190700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b2f9d9b2d24cc983ffb9b690fd8229b5f48ce17f1b46ff86c54c074c92fd7. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:25:07Z), 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/IL6190700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b5eeee89237a683a90f3083619871ae374e8efbc006c39f610bd33d7e8c63. 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/IL6190700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ea9f8a044ba093aed122f569a00b948a83f05016589d3cf9dd5406c760edaf. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IL6190700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce478f1b3bec466ec6e15d9e8985c9b444ef45fc7186248b63f11177b10aa0c. 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/IL6190700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401ecf11c252c4e851ab5715826835eea4b80cd2e03279653fd20fccdc54062f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/IL6190700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303824679cedeec34f0607305ae3887d4992d7c4c7c2cd3850c87f34b910c492. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:15:35Z), 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/IL6190700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba8ad926ebba1a099712da42f3abc79429c63b4284ee101497e06e70c7accd6. 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/IL6191000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2612ecd041a094296077530736b9ed74933c88072203e85313bce63b790923d9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IL6191000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a49f022634f236b359858f11681cb95b71522e9852ddd83a0c24e1e6638007. 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/IL6191000186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1958f1dcf30a74f0c9f3ad01cbdc5d58865eb8339fc8dfb0fadc3dcc214dd581. 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/IL6191200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa627795f09002deee1a85385f78ac1442498aae820c758601eb0bff895b6258. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:43Z), 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/IL6191200317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276b49536e8b7e22224b58842b9874c2273027042d581c468b14a96686788060. 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/IL6191200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5aeffdbd829638a95cc890aa1dec866ff3d324ff971af840096d4a802e9700. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IL6191200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63063c5e1153454ca6c121f98b0e1fec759e5bdf099b02ce973fffbf446ebc5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/IL6191500565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe14f4584a4e2df228dbd736a95b77e736d893de5e841b106d4923439b3faa9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:48Z), 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/IL6191500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab5de79970af1de3cf99f3f1748fce496aef1baa55f38b2f074c4f92476eede. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IL6191500569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157fa0f9b3c9c85e9a9dd30e2f9e7cf16968c17677f75ae409def75a617ac3a4. 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/IL6191500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62080459d1e9cda30b8146583c1957dfe025f50c3ce5dbbba3cbe68d4a2385dd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:36Z), 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/IL6191500572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b33c9f6a4c847a0fecf5e951fb5b196ed69d0daef27dd3248d3e56dcf878223. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/IL6191500574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe264da2cafbbab4c757401243598806f8f5d9f18efb9c1236ec193f756fc48. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:44Z), 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/IL6191500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec52a945c2ea4a14cb2e2a5ae2c77276e3b4ef9f4398716a2647368e4a8f77. 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/IL6191801139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4624c2ee1e047b902b8661a168a8d31d911a4a5122fd18f0007d0516b36c54af. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:37:34Z), 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/IL6191801141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868c928844f7bc60a607070a9586b01698258567370e82815d515919b108fdf2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/IL6191801143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46c7773620bcd57e59b2ad3fce63638c5b0abd4c4f90473b5c854129b25f79. 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/IL6191801144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef4887160211a8d7e7113414595e8a1098bfa11fdf450619a16cd035942f8a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL6191801145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03fc81467ecc18b416d2d1f9e950336082059fc80958a221d59a1b32459e6c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:36:29Z), 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/IL6191801146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b677601ec2f1ccfd50e201690b5e705e38bde034144753996f7d4cf30bf2e5a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IL6191801148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77da38fe467cd0f0358f47aefa3bef8dc2587ebe4671772af2f3510e0f94427d. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/IL6191801149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0419645c2c3f730751990b1c5a80804ee54072ca4100a2b6425fd71de2a673c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IL6191801150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a824b7ba405915074181441326dcfde517f23387bbddedc7cbb3c0625f552f1. 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/IL6191801151.