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 0x4ddef261d471b27129e3de6ea83776ac266687ee336acb1d72e5a872f8359f72. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7122bb9c-b241-4bd7-8236-8257168fb7d3.json and https://artists.proofprofile.net/proofs/artist/7122bb9c-b241-4bd7-8236-8257168fb7d3.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 0xc7267ed8c804152dc41405bde9b107dc831744d0aad19551a966131ce1847d53. 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/CAK472102602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92686dc9309df9b4e18657fb9191fcd284b55ad03161d72e7ed03785e92be7fa. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CAK472103302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085a1e0dc9331807dc419175c52a2508d7f68228761e9acdaf26280cebf9a83c. 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/CAK472103307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e9b8709da224ed934b11ef2e84c3890094d4067bbe04bd3482ba2b4dc0b47a. 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/CAK472103309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf604c7641bc91d4ab8a059eb31a03b91ccd26d63cd930852c8d75ff33f39e711. 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/CAK472103311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997da9dd8bf8f90a94265d7b6624707798a0deaaef4622c42916b5bc88e1eff3. 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/CAK472103319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7cf3f04586b2f202d4a749867f88eb9402688ed990f7f0fdbc7426deba957. 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/CA5091900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c359aff1d5d5e80b98574a44c76821c610fda5393f3f88305124f36d43a72f. 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/CA5091900503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd0ba3034f0f0c3e9ab9e05cc0dc8419ff41f66d69b9930be3fa3f4cf2f134. 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/CA5091900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56997bfba7ee82c7154fcf7b05fb6569ca0ac6fb7a407d70601267d5b2b365db. 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/CA5091900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0164df7b658beffbef6a03cae9611f4a30d7b1f2f3ba3fb45e34060ea5e0332. 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/CA5091900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e1fec34ac27e3288ccaeccf0eeeb8211ab04b0ed98cc59d4e96f7364235dd8. 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/CA5091900509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae18b36fa54471e35efe3cafb29634d4d2f9f54e3db1176592dbee363830f34. 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/FR0Z42000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141dc63626724b1f4e676cde3f47c1cfae23c90e2dfe8c7bf796d3d506abc92. 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/FR0Z42000173.
Ancestors Dance (SMS for Location, Vol. 3)
Kitsuné Musique Mixed by Amatan (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fcf1b0012752c6b9dc38ae1f81dc19232906675599b4ddd375fbdc08f12b1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU702100046.
Kitsuné Musique Mixed by Maximono (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e95027fd3adb3d96e888746330b22a237d229278a5efdbf7d2ac92abe1c1d3f. 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/FRU702100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01f4d49c2d45c0458833d9c8e694b295604c55d233805d312bef4f175c63970. 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/FR59R2158931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c57ed0c4acf1240806235da264859f8b1b96b02f6d7fd5bc9dc016e490632. 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/FR59R2158934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb280946d11c49c0c2d21bf0686bea2de96e7a994bd27337d6c5e0769348c0899. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR59R2158936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca71921536d0b0f0720b4f448b7aaec8f7b8024883a5b189f9d6e9d165efad. 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/FR59R2158937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654e577d968621a0f7ca2456ade8c771fd657b58afaaf5f632c245c296ebe05. 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/FR59R2158938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f35cf6255342ba55ab475b609e1dd64c46acbe94d6b7585f0f5f83c3cbd57. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2158939.