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 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 0xb27991dd3357ad2b6e1290c71386b8d29e7c314ee08c66b7355debcd85bbc150. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33d8eccc-65af-48c2-8e0f-ddd0ded4a70e.json and https://artists.proofprofile.net/proofs/artist/33d8eccc-65af-48c2-8e0f-ddd0ded4a70e.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 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 0xb3e922a4c3e41c106ba4bf526b0eaf91b31e3509da65fd980cf32a6af2e5b96b. 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/US5UL1422644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb186dac100ef673786cc939bbbfb9ad926170a9ad9fcfcc352139fc316964fe. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US5UL0516243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b88173c18e71dbe8056eea4f4ff4bb6904c6f703a20f972007c9358a8281d2a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US5UL0728723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bdd410d431ce1c9e8d22ffcc5c41d61c88bf9cf3611a0eadce6b35738441d5. 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/GBPS81514123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb1b309cb226f374745e0b103d81290aa565687996a72c2dfbfefabd4fd38d. 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/GBPS81514132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042ee6c426ca714bc6a7a3bc6ce64f527b5e63319e213097b2945145a41c0e9b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBPS81514056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f475f908ece91d8cf391c9f13c4b7d3e99b5902f8a30cd49662d5fd60847ab3. 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/GBPS81514009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705138e8299ef2309409c353983f3cb706c65d9af99c27714a09c1049decedcc. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/GBPS81514202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f02c7f760930e7b8e6b3b42a9304cc2cd91168e77658421b0e5a4d7f15b3323. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US5UL1401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e78f1ff3ef87789f91090e1f982e9e8498782147c7ccfcfca34301502096e. 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/US5UL0624770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb06df056a7c866b8d06cdad7c329de31277f61503637c8d8e707a15543feb68. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US5UL0624935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f86128c2447ba21c0489efee48255094f2417735d33303699f2b64f7cd69a. 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/US5UL0687953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c9b196836cf2acfe333fe1307d0b27f512faadca0a53712a53d17072b2f121. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/US5UL0769861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f02c7f760930e7b8e6b3b42a9304cc2cd91168e77658421b0e5a4d7f15b3323. 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/US5UL1401601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bad9441bd0ccafc2cf94b994b0d295a95a191b46d5e7aaed79e991abb7b553. 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/US5UL0624776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb18e7bdd70187cab2c58da16a295899ef6019e2c604002ed908ac7d60f7a691. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US5UL0925390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fdead71dd70e1289dde63e3cd97957a303abf10d60e0fc09dfbe2a03f0d21b. 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/US5UL0699621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe83c6916799cd255ee5738411153727b4575d233c3ae2030c7774543937f5b4. 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/US5UL0624962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c05fcca8eee72db749e5c88ac6d89598c6fa8b8897c4b8e9c766424dd4f0ad2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US5UL0647934.
Traditional Christmas - Instrumental, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6ae79126361f717004e00d4c48f8e3fad03c1eb4ecf38d8212786d7298881. 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/US5UL0696459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019febaf943358f49641db5b71f9a652b9fb2657a53a4291a9abed82b4059df2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US5UL1041598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dce28a6451cb7a0b018c3908f568741dcc473299f00fd937ea899a41f6eab9. 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/US5UL1312223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52925cb8e74f8dd1bf988fbfece87ca3ae2df1ef8f856fb3d21875d82622d63. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US5UL1048666.
Morning Meditation: A Peaceful Way to Start Your Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1937a88daf8a374aaa73ad01a91fa91791b9d257677bd446912268978c80ca. 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/QM6MZ1450344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203a8128aa46990f5ff9556e6c1ad2b51e897cb2b0b829ab19ca58f4d6a5f9a9. 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/QM6MZ1460673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bf58859f8167706dccc37fb245bc4f1733b68961bd89dd4476059e97e47b18. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US5UL0696328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a5f409ba831946bf9e8a305d10dcfa864ba3bfbacd3f00e136492b938d737. 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/GBPS81514100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dda8e91b41cdc53fc0dd0240ca8df8e5cf1047fce8a0562d77290b4a34a67a. 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/GBPS81514127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d2056c4d9bd1f20050a19b8be4e586722d19e9a5e2ddf53389d40c0296cfcc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBPS81514033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaaa674a239bca94733adfc9fb13f08cb719e7c482f6758a677733744e96877. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US5UL1446057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dde9109a13a7c7afbf778d753b0b9327c8e677904742f2572d0fc4f13810f8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US5UL1125151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c70cb638752db62f7a15f40060fd649b93af5a76fe08b9d1afaec3916e07400. 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/US5UL0694103.
Minds of a Day - Popmusic - Female Voices Vol..... 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1703f9fe0be33c713b1e75a5381a49efaab0fe90f40a63ab013b14c9ae51749. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/US5UL1025323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3267596509a9639b9503c6794beea4228b7c8a9a730ea419ec5bf4038e880a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US5UL0912415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f398bcbae8f1e83d281ffaa050734212c31606880251c1ab15b9ef7ca986b5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US5UL0699942.
Calm Flow in Your Body - Deep Relaxing New Age Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae97721a026890199c3eb92ae353733d2fcdb7a75d40c4d6bd6bddd70b83de6. 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/US5UL1616007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5df1c72c3cdfffdd2ef3a94fc8309f3a26b583c2a4533e94e49e3a8b41f750. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBPS81514048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90893f7f5923a50dd99f7a8b4011c85c6b17ccd33a67ed1f72089ab5dd22da. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US5UL1705272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21251f3436cf059a2e0320ea1238bddc43f15d896f4ec04d44d483aab32844a7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US5UL0926852.