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 0xe1f0eafe2b60faa1bc9d6d8c0c75e32fd3de42257ff15a6d4e1ccd050c211725. 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/cd888458-ed31-4f88-b6b3-a74c592193b3.json and https://artists.proofprofile.net/proofs/artist/cd888458-ed31-4f88-b6b3-a74c592193b3.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 0x0e9d39cecbed6d2407280b467740d2e22740966eab63305b2879c5ed38db00a9. 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/IL5842342701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d2ba51a08576dd38ce8955b5310911575f09bf4fe51fa559edf922379dba2. 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/IL5842342902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5917eada9fad1b03b874179c6f91bf89b6cfbdec1bd24140714e6b767229ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:56:12Z), 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/IL5842342904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049dbc6cb093cf0cf239dd5ab365e42066c2225352f466f3cade95e1ebafa211. 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/IL5842342905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d74c1c0ee6b3b2f8bc2d307f9145e349bc117cadef64d926cf00ae70901f8c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL5842342907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9065cf327e7b2637b268897157071bb0c4dbf7a89547b2a1d4e9cd35958038. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL5842342908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc24d797b996268df50180b7c0223529d9e56cc8d19afc60ea0ddd56d7128a. 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/IL5842342574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66546e627653aea1b117cbfec7a47977b7ef71d6296c546c081185631f4d5538. 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/IL5842342909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1006c0dbc1390af1ee2af9490582ffbc4e860a142f45f7dac2c8d15fe697e97. 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/IL5842342911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eafaa54efc7c13e29b24ffa55e47f0593d582f70d4dcab7bab4195f35e9d029. 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/IL6192305683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae9ed52d65470cedb1527325a2445d27dc59a90112ce0e35eff36c8bbe17fa. 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/IL6192305684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340efe5b152c0c132ec9935d8ec584b3fdbe5c4ce763f903977acd460d75dc40. 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/IL6192305685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108963120217cd7858b2aa8635701704a8b7c7b0343263c9b16f843357e49a2c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL6192305686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015727f86fcad36b8825ee342ac758ced872a0fc40643b1100dd005d4fd8f46e. 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/IL6192305687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0286e871a4d588b919572545d815148039556157f41bc9f7e3f3eaef8bb034f3. 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/IL6192305690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5165f55c5841c16a527e0b5752d93d80cb8e2a51a59b3f27f5a17b8ae549bb31. 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/IL6192305691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44161ce02d6822911c3b039501522d3cc0048ae2ce68f317a66260120910201d. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/IL6192305693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626212d167e6bcafc80623bec5e79cc65ac065c95e937a672e46695f57017ff8. 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/QZRP52221424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe342416c61f3824afa56fedf031788809f44c05016b515cdb8bc879544a3d37b. 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/QZTAW2280441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233c62cb785761f8eaf1d5171f6927d928f63a8bf2ba43ca571d87728e996af. 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/QZNWX2238167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06326eb3326b623f63f5cc85f300b06be83d7fa425bebe6a84e74911280bb34b. 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/QZTAW2280443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340efe5b152c0c132ec9935d8ec584b3fdbe5c4ce763f903977acd460d75dc40. 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/IL6192305685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108963120217cd7858b2aa8635701704a8b7c7b0343263c9b16f843357e49a2c. 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/IL6192305686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108963120217cd7858b2aa8635701704a8b7c7b0343263c9b16f843357e49a2c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/IL6192305686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd7edd5201073d293821f0d4926ec55dc55643221d07318fd62473000a551f9. 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/QZHN62391050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725cdf9d59a9263775fe827fd103d2ef8d4d724f8773412482d0961b5609bd0f. 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/QZFYY2017934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848acd0427d3577b4f640cdbecdb6f8cfdbf1395ecb7cdb57500a274c0bc5dbf. 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/QZFZ41936420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f37fdbcfc5501597d5b0e6ebcbacce34855f5d7f75aa90bcd9d3e304cf86931. 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/QZTB22215605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249bf74eeb7fbc955c96293e7d2f6b111deb7a7a77c6ec8008395328f7ea8f7f. 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/QZTB22215606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc247434531d814b3e3426489e4cf449beac3636a9ececa2abe59ba9d60d48c55. 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/QZTB22215607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377df22be4681d48d63cabc3e442377e438e7c4540a5973029ddc9476687340d. 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/QZTB22215608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d93646457de6195e1dbdd54a7d1e1c0cd647f3538b96806f2b4a31589d17be. 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/QZTB22215609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a741fb8d43eef8d01b551998e915e199cc08f7a537241df0d3c511660ce47e2. 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/QZTB22215610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f2f6e51d0c98e1bcbdb06f4938825b116166b41067b2b55c5770740d1e82f9. 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/QZTB22215611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7a4bd6ffbd69b117b8d5b320c11600747120c00b8acfb4954b8c33e786c4d8. 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/QZTAZ2275233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b24a27e46e7115bf07b5e856d94d801ca54e5ed3b068089344e2617179f42a. 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/QZTB22215612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe79e467fa64a99b160b66baab319d41aabc7cf14da46ed2f9e7fa0a284c0027. 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/QZTB22215613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5713f0c115bc2d3373093ca8d757032f95ad87ef2420e473ec503f9c40e957f4. 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/QZTB22215614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae414662163e932a6102f1ca65522b4a99ec3bf83aae3621b98db28d9b0d43f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22215617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586edd2d2c1b986bd89a67cc08a3f8c0229e8d24354d62b3169007c353ec9cd8. 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/QZTB22215618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bb1931f284aeada690b0b97b8dcc601f8982a103db4e5a26936e744bf3c340. 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/QZTB22215620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac2e34a22ad6a86525fe0a6a5f1706f796148753633aa85a3b9c577fd39fee. 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/IL6192304812.