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 0xcefd51b9a939afa7e7cfaeb20be6e2999b22ca819c07d8cf50e1db0b10f68040. 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/257912a9-c2df-47c1-b472-75f865727456.json and https://artists.proofprofile.net/proofs/artist/257912a9-c2df-47c1-b472-75f865727456.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 0x5e88d3e1aa8177be5a198504b540ca07e043e8eda2ad4fd6fe2e3acb5fc5a68f. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ES5700300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d903f83ad0a1542ab7053ca1c9ea98ed59e3ad7f9d7c03ed3498414a01e02c. 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/ES5700300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9bb656a810f8a85714bf44e841d58edb1b42fe798cf9c32f725783cb967aa0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/ES5700300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cbbbdbb5d709151a6c9be002e2398f18da2d1536765583058ce82693f3f4fb. 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/ES5700300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f2f55b0b8fe0b1c9c55452553310a403b777e28a3271a5e37aa031e0619cf1. 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/ES5700300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3c7ae79d3a12cbd6bc9f51c3dd92c39cff235a1eccd8ba168f20ece8cec41. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ES8280600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66a7975c97610436b57dcf27c1c512d385c01e32f03491e2a4123b2b8d8a51. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES8280600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb126acc6420c2abfb9beb359efae6527e1d2b3edcfd9a9ab8c432e374de524a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES8280600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a321543444cb5ecc0daefa25e09b17dac5e2845d47cbfc493f1734cff4ccc40. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/ES8280600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceca11ee9eb1100620e1c3c034eded13924add78c1ab86fffa3f5a9b3804d6ae. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ES24C1105101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00471f54a96add429a5fa1e57b6db95a35f26d6bc02b5195beabb83c4aeb07d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES24C1105102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd00e1ef532a5256b899f91d7c1ca3c355d6bf6717753be827b49470764ad25. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES24C1105103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd33ee5ab102c045b2d6218c6a0d61aabe38d428b61c465af6f338c92a9468da. 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/ES24C1105106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f8f5444f75646dd496d1f6c4c97c2129ec3eb3a7745dda0f73cecb30909d06. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ES24C1105107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd018792c93d040c62f853da99a17d6129ceabd96caab667e9f14f78a160cca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES24C1105110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf530a3a1458e602d4f1fb28e16f84cfc58ab4e0699bca583a6bbfa85743a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES24C1105104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4869f8124eec2ff8fc488c0896b3e0d16368f8f665658b4be4efc9d6954133a. 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/ES24C1405102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e13a77166134f72b9920daf043d332225addea4f5e781a4493f49b66cef9a7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ES24C1405103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc204c9d32096402bad7bd809fa1d8d3db2b6f397e84c063d97dfe47c918977. 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/ES24C1405105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb882fdcda9fdead9c085f6a013f96ef6e067343c8165db2cf225724d69cc6d59. 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/ES24C1405106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f95fb80148087ed792191d5a463c38c927c5c35d76cd27b462ba4468aec2bd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES24C1405108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8354586a2d39a13af5cda66970aa3cb0019099887cfb56a2814d3f760e85f5a2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES21S1900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e55b167dfca25984358eba62fb560b11f1d64c107061b3315281c8184dcd471. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ES21S1900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ff310930cc5077af85c391252561abedff4ee1420c515709523462ec90a9a3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES21S1900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdccd02a304214daa7877107724b6b3e0b89c10accc466d8220512f6d2d07d1. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ES71G2027780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65be52c84a746a6b80038967637620d7e4e2923040527c70a2f7feab6a1c4b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ES71G2205101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a5018b0049c92e2cf268d6a62ec2bc73cfd7c9afa949304e6f153df1715192. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ES71G2318238.
30 Años Con Modestia Aparte (Son Cosas de la Edad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d9696f4cb12ea128b00ea178ff309efb3189001288bef6a8d0d6c8c7658e72. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES84S1800638.