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 0xd657de5d727359307ea4056aa8d4549da8c342047443f180879cdfdcce3c1449. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bf6a0a7-c9f2-4fcf-ac3b-df7fe8ae0e00.json and https://artists.proofprofile.net/proofs/artist/6bf6a0a7-c9f2-4fcf-ac3b-df7fe8ae0e00.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 0xcd826bb0dd562028c9573d79c8d6da8e09fead9b9803dedadfcec9956bba6fb2. 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/KRA300800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792abedf0aa7ee14d403f92b06c39501cb3cd114ccacf1e5fc8677e5660fe83. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:55:49Z), 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/KRA300800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052857642add6c343b4a954d05c4b75c1582d1856d3796304bf40e232ab7fcc. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/KRA300800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e65c5b92bda44c472f5ac47d23e8dff3053d396166eded4fbb9580eb2140a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRA300800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263cfc19041308f6b803aa5b01ea6620a4a6c80fa9929ebf2850a189083bd897. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:30Z), 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/KRA300800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde59cd6096df7611e8307661895690a2786633c6daeb1e83adea8b6e4f8c18d7. 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/KRA300800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ab054f2415b4345ab9654a01557b1eb476a22611e93d9cf73bd42c39a116f9. 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/KRA300800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf729e009866d36feab4c3d17b95613da757b749fe66466d2e75ac0e1ac8d464. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRA300800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6f53c0129a1ac89fa7d087f9f44f351a73306ff41e23ed7dd90c50b051b2eb. 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/KRA300800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc2923487eebaaf58a83eb684bc79573ee73f31619d7582fb64f161ca9c0350. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/KRA300800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8c89d185dfefbf72d954791c8bc7acb843b73385fb71bd05b5e5b98104096. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA300800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566105d53579be5eb80d104fc4ce6bf0940a394b526700a64f3ee6e25c486f7d. 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/KRA300800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aef223978e2caca6d60241da9a92a32bd577dc37b1df44372bf2e8994688800. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVP09900801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4211fb717105d6908bf6a59f1f7070a44d5ad91b5868bbc6124085b62eb24ef2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVP09900802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce7c5d6bec8faa03d7060a152c3464a2fa7f0af0f2731dd2b3beccde8dde6e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JPVP09808101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fe9e675f8f4ecc511d8e7077a797ff27d10f35c85c3732681e2f5eac0fb898. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/KRA300800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1890ef058e1e1ffdc14406bb19644da2bf1468b1df6704ca0e2e3a24ff5687b3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRA300800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5303643ddbe850c1fda884f8cf2b4c177c9d6856f1e7dc3413cc64eb93beeb3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA300800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34955b0846ea269499c1e03eb0306f80ddd29ff4b82aa71b8279569c62011181. 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/KRA300800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85933bba8ddd51a724d38012a13f43c3cf40a715c5b4f424ba7e6d1874327f70. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/KRA300800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90453d6c19e2f86ebafdef350b07694e78b5962a1f7729bdaa8f2b7b53a653dc. 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/KRA300800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0671ef79dac865ff2823df0b6eecb9e93860953f06c87fca825a3c1f61f410c2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:46:52Z), 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/KRA300800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d5ec20f52e272060cf2699411042b014b32bf507d3246a349ef6c1b1cf9e8. 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/KRA300800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7828817be44986e09cd4f5de5f56b85ae091fcfd18dfd6dbab6f6e00e50b7e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:25:20Z), 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/KRA300800181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71575ad4e12541c84a1402ba9ec6e4179b78c42e419a1613046b72ae3664d8. 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/KRA300800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9f45c865fdfa99891ae30c3a84e1a82b3438692d6429944231b90b1c2aa89. 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/KRA300800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9bc0b778c1813c52434ec525ff9a475a4ef72133fb7b0d509bf6ce714a822d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KRA300800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd813a2b03c6696c189e2f4bf5c9d930bd73fa324ad4dc7e33d53e48b45e1f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA300800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8916232c52230bbb922c03d9bf6e53ce7e449c6c2f7eef5b9833533f89c067. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/KRA300800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98feb2ff39c572c3ed165b202dfedfa38bb7251b640af525b88eafe7cb6ed4ff. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/KRA300800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e31abad44f40f9397f716a0ea0417066dfdb044028a5e6cb1b57d9dc8fe03dd. 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/KRA300800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8492d190f916f9b11a472aedcd3d3914d4f01370f31e2773fb09d33c73d7f830. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:53Z), 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/KRA300800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07ff60d3e658deef7455f0881a92932e38e12b047819e7f488e9cd5fb8159a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA300800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e50955bc3ef9a20337a96b95b6ce5af040d5fa81fbf5fc6291f3b19f58610. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:39Z), 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/KRA300800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419a47a2076cc26f2d9737965508c2bc211aaa7cbc74f0d740bc3d9ea05ddbf. 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/KRA300800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06960a46c1b1091de25feb35219bd2ccc0338fe38f93150890e37709d41e35a3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRA300800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21c480af48c27223d395381ce1e1c35e8e412056b8e435e57d9b9e1f9bd150. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:39:49Z), 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/KRA300800226.
Remember - S.E.S. 20th Anniversary Special Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73468b416af4c5619ac2b65221cecb7b65bedc3cecae7780324f2adc29a85f9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KRA301700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029639ac130244294d1b34341061e7cb4198625db20c780a1b48d3bf76fd842e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRA301700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e1a3faf9399cee6a2eef24098ea5992dca7c39b25f1cc2cab59d017ee1710. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRA301700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88efd806556d7891d4fe5b04ce379ce502346794b62ae2f747a08d3f18d6677e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRA301700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd9e79cf349a87b451937317f4c664e2247c9b5cde896882b528c9a0cf46e2. 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/KRA300800714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f476d4c7874db1010bcf15474d3549b9710d85cc030c1b316fdc9ab1a390e6d. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/KRA300800745.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417cb250849139d017130956a96da66cdcd871aa192ed99f088591f5564969d2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/KRA300800756.