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 0xad7e5204ce30db2d681308f2e75f95343ab902cc3861c281d8af87d163bfaa41. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5320bf00-2813-4910-99e1-5c2bf0d84b17.json and https://artists.proofprofile.net/proofs/artist/5320bf00-2813-4910-99e1-5c2bf0d84b17.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 0x2cb2e880c0922045ec42b9a1470575fedca85346267bb498b3f3283bdf1bfba1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:30:24Z), 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/GBUQQ0090103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd872864c7fd711bfe84ca9f6d336eb9a9ad784778c7d3f7d2f34639839445627. 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/GBUQQ9989013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf93c50af77ea696b10817537a8a0efd84e418a706f9dbb36faf8ce69f9fdece. 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/GBUQQ0195301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f1e65f22dce7a60e7c1fcf32b6619eeb867eab6ecc98e4bb401bed65e806f4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:18:28Z), 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/GBEBS2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9bf7d519b7cde1b2bbaddfc02344f8b0854bff8028d1519b2d047aa20b92ca. 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/GBEBS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e4ef0e2ac923fe6f1942f1aef763fe6cfb64ce4cfac96c965dcf8d1edd38ae. 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/GBEBS2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da2a29552443f2071b3d310c16bc5d50670880a35b92879be3917098c33ff73. 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/GBUQQ1261701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef076153d8d9e13d95798552a632ef6a2421ff3762630969ba3f6788ff6360. 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/GB3RT0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd25e750ca23e6ee8293c21aa48f3fd8adb48eab6228f23d13c794caab39ffeb. 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/GBUQQ9989001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd881e43be88e5d70d5adc7970985b087050942fd6be16a1a839af65eb8ea4. 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/GBUQQ0303702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d87b61159e3a41212d95986a60ea63167eacb0793e57061b4a856e2cb394c. 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/GBUQQ8977803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f765ea2a956c50c40a9918e34096dac4d83ec2f142d45da3a86b6892fe57959. 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/GBUQQ0195302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef735eac7b415ba827e7b008f2e0e9402c5f105893379962c496e1618cc551e. 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/GB7QU2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf945d6588a1a43a1d23ed547b7079f2b6b0f948cfa2bc83f1506f5a86b9c3845. 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/GB7QU2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4460dc3e7a857863e290c56d14d2165237ac570fda4611d0e60b81c3f5b0bfed. 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/GBEBS0400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98d0f57e69079323a2f4f01a2e5f3a649c37910e687a0adcb6e7eadefe24ed. 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/GBEBS0400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb494d6817f57da6af811032defa3bb1712fe680cdc4607842e733086c3287d1. 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/GBEBS0400069.
Fantasy Collection (Ultimate Bhangra Dance Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60810c250793fc9135544f10e6defb255beedeb9aa667437d7e24eb20bef8957. 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/GBUQQ9988003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154358db20a275a530a6b81c4b512208ebc1040dd651712db392e83676b93229. 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/GB3RT0100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d4fddbb209407a1ad8c4a8a3a4d67f3655c1b6f7d7c607d5165539be2a9825. 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/GBUQQ0201501.