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 0x30ca0af5d5feae5787e6e7ab1a4fe17e3000c135fa9cce942bfe8221b545394c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f33338a-ea4a-4d8b-b257-124e48da795c.json and https://artists.proofprofile.net/proofs/artist/8f33338a-ea4a-4d8b-b257-124e48da795c.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 0x931eade818a3ef92e32bbddcd22017fdbe76fe65cf568550e76318284f2a8f51. 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/DELJ81954231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d017a9bfe9518a8873295f634fe402c551a61428f062871f56f6eba293a9dc. 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/DELJ81967922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea1b1a78990a61e6b14b32a4c615851a2cb61d6782aa2aac7b417610d13247c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELJ82001665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41eb5d8d5e71419776d0835b88c744e4e6797f813306e4b1c4ee52adb5e909d9. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:35:56Z), 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/CH7812065239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b126331e7a3421c8de71cb748ee5fd9da7926c21cb54bcc9621f66fc79685. 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/CH7812071482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca148a9c3e39b9f147c13bdcec87076c1ec5d3d3ef66a66c53fca6fb445b8c0f. 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/DEQ022107694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497728ba6a21bdc49bac75f1b4563ae11e5a8da05053f2d19b7c673825dc84df. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEQ022105044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595ab81c1028e45256d01fa0b680091064158cdbf80732b926e045c8f5480af9. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEQ022105045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578e0faae13a37ee2e15b265e2362b5e2ec106e674863e8aa153fe0cc1f1c5e8. 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/DEQ022110932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95985b339b3024613d8008cf8da5716ec2e6c99d8e6d33f596a3299162211e9c. 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/DEQ022110995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d10ae202f90e294eb3205acb17e31f236f4f6cd90e39af15ef7990b488e621e. 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/DEQ022105048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bc1a0a7b9c7cb1c83febd62108b5fcf4c3036973289a58cee22f17d7490931. 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/DEQ022112283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8786d17b86f6061c973723cbee8f300a990cb0e54c4f9f06687ee66b904f19df. 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/DEQ022270528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825cbef320b6a8889ec6fbba1047f67eed94faa17b66a3b0a1128a4b941fb31a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEQ022270000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf13e0fa8f9a7c1128ad8a5e9a85e57021da0d35c0219547384b004b63a3cc8d. 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/DEQ022270721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1eebc2a6a2fe80831ff406e1dc11804de900d83d3382366cca6004141c1ec6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEQ022281186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1af01ea6f3454e527ce9867bbc087df1ee4483d6a67357920b7d041fbfabc8. 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/CH7812236342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f84ee8dbf737243d154b1230dbe366d93fe9d673950129cbd828106b72a486c. 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/DECE72203609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f580eb62caee585466bc7d823bd99560e6e6765c20b974f9f370e19910b2822. 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/CH7812055174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f580eb62caee585466bc7d823bd99560e6e6765c20b974f9f370e19910b2822. 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/CH7812055174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6118d597994e69c0d1b2091909eeaa7972554bd0edf8ed6a3bfccd788e38c6a. 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/FR59R2115808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1efd8690797086a773ee805b0c2195e4b5a63b2afd7d71780fb3b71c976a9. 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/CH7812233190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48516e1020fe99300dd3d652749a327d4336749de7e882beea15af2b0bff26f. 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/CH7812344625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a151d4201fd80693d03d2b7d66e9d6d60b7b53743d30a0c2932cd5d250c3de. 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/CH7812230794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1efd8690797086a773ee805b0c2195e4b5a63b2afd7d71780fb3b71c976a9. 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/CH7812233190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1af01ea6f3454e527ce9867bbc087df1ee4483d6a67357920b7d041fbfabc8. 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/CH7812236342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e25e514572bcc6f96388b54d322c6aa1eb4079a55da7b95a4ff441d8152dcd. 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/DECE72107712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039bfa999be2c705558d4d1b7fb1b83701d3bf4f126db96d51b2a1852c1a3670. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRX202053247.
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 0x5906225e43771064142a9cc5da05095746192e1809b9995d2d0e4a3f671563cb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEKF22200498.
Radio X (feat. Kana & Mavie, jaynbeats & Andrewextendo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80632b28460344fa4e26323be302bad8dd59d0b63d45f5438386acd23d43db60. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEKF22200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4014ed0279fa7dde3e3b00c249ea0146b53d9f1ee1618171fb116bc50efafcc0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DECE72200377.