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 0x3a205428ecad94a7310b0f84149a3e48d91b53e08d77ef75958d9f6d6fe4961f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6bd050d-461a-4573-af54-3dd9ac74a00a.json and https://artists.proofprofile.net/proofs/artist/a6bd050d-461a-4573-af54-3dd9ac74a00a.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 0x747b173bb6b19d5d05e30aba0b303a65404440613f70179ffeb24664bb7f079f. 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/CLA1D2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06abd03e43417b6db8841cd6111155a36c83c1bea0ed20ad606491a7b3ce1cec. 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/CLA1D2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382ed9eb935948ef92fe6b056054efaa31e0119d6e163b0e37497ea9f0de6cf. 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/QZNJY2379576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d0544df39b0e9ef0553a04205d1a4d720e9b9134124fb686e831ed88d8a2d5. 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/SE6SA2270954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d65b1c70dbd01c8174dd4c7828b88310bb35a7c68d203258b2d15ba212b544. 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/CLA1D2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f1a60364096a8bb378811b805046800fa110204ccdf563d471ce66965687c9. 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/UYL842200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170106089a197e9b9bd5041bb31c31d78430429ec627dfc700b327bc0f618e71. 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/QZDA72269490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea463fd829e163f5d02d4f3d3fad4eb50d9056d017cf84a5f29d7359146783. 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/QZDA72269491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b554d9dbd81b7fd50d2d429c3b8b880ee27f422e2d718fefb06115ece259a61. 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/QZDA72269492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa92fa58d2aaebdd058d5fae04b894b5bbb3a21a782b09ae6b399d16b5b41ae. 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/QZDA72269493.
Despidiendo la Primavera Con Música Latina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1371cee3683659da96a19657b30f029c7250d993a74bc7c935323c72464b5e. 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/GBSMU0029849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8b3d3d27feb1a12335d3d6beb2a1c08119a984552d4e8073434eac4d169b2. 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/MXUM62300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05716a6ca65e06db5b3c4ae994ccc26e65a06f709378d5ab34d88e869a7eaf7. 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/QMEU32308858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba320b4fe86909187c72efa99d5dda66d826300f18e1f49283235ff4d5676d66. 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/CLA1D2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd17ccaec751370f36c79094c28df98e981d2e92803ed8dd224fd39bfd3a3afc. 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/QMEU32308840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3e2d2444d84b04ef8c3a3e2197bbd0cbe098fd70ffabda36f12d5f424698e0. 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/MXUM62200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c71d5f41f4f875e4336f949b42d2ea528b5250a49b2f00b4d30fe4d338650. 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/CLA1D2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec857f22492d7df487051d1b6d19157b793c0f7b72874d6f1f25ef8ec5c858df. 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/QZMWW2410638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1250d68a04134616aeb56aabc8002c1f492ff81d9ecbf2b191d3472d7cc45794. 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/CLA1D2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a07782a8ed22db28846197b7dc9aed233db6228473891466e091a1e9bf33de. 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/TCAHO2378485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67acec149c6e6997e05a9bf0afbc18e7d9f76cc4eccfffa671642b5698141b69. 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/CLA1D2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e097905dcaf7f77d8fdb4d0bcf1cea77a5560aa783a258af4071f3a08d3b4be. 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/CLA1D2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c54f3076bc66f94209f9256555006e8a211344b5dca347e2c1519f27f0491. 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/CLA1D2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe12bbb5d8767e654c5cd58acc90099fe6cf38b3c0550d127b0ab2c262cffee0. 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/QMDA62253413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce36a736466c86515e05086333c09fb00df8fcebebf7ecf0bcf23d719852c2d. 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/CLA1D2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c726cdb91f3f5c34f55841b05bfa88bd6e2b4aeb8d93f423845993613711d71. 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/CLA1D2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379d7db60cfc9b46ecb81ddb3a20a691471688fee3afc845a7e7796929ad4d2a. 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/CLA1D2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc166bdc7c02c04fe562aec546f6d967b8482d634f171435d00913f7c87a6e7f. 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/CLA1D2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6eb771646093d4085dd5112c25040f0b55bee4c66348c5ac5984c56ca93eba. 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/CLA1D2400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2105a5200cc8d8aa7b64ab7b016759967bc5f5890cd7fa0e82cbfe221a4065d. 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/CLA1D2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb8f7faa0d707ff9d7b2b284fdabcb626a42b41e75b0f3aa2f1f1a19c17d3bc. 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/QZHZ52227019.
Dale Pa'Tra (Back It Up) - DJ Kazzanova Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525187521a47866afd7ef0b4b5aab60c3550c0d8d241ba5ce1f1e772d084afe. 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/USUM70763453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75613a87cfc7cffbbd17a71beb7a9f4fbb9cac59833643368c143d6ceb8db6d. 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/USUM70615050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12afb974fa52be608a2a74917dc54fc177bdec95e200ce2e3e690b19b01aa43. 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/ES71G2223728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b178ab28fec3e876ef67c1dffef2f52732a5295d4859a504363918cdf5c0d6. 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/QZNJX2549328.