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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e341bcb84bff286336a6531c6376a88fb4e73e2e58f21fc9a8a8a556ecdadd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d839a435-e082-4518-a666-717f2de81bb9.json and https://artists.proofprofile.net/proofs/artist/d839a435-e082-4518-a666-717f2de81bb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cuaresma y Semana Santa. Música de Guatemala para los Latinos
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ca2a1f0652f207a16227b9e3449730a4bdfbb706deb70c366e5373527dac0a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GTA010703708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e47a92cd90fbd2a2e52e22051240c506de26d1403ed454820a5dd6a2214fbe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GTA010703709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b2f6b77570964803f3dfe1a8aae6b30fbc2e01c36ac78540ea1ced9366c2e1. 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/GTA010703711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418671f5663d24a7143e10c4e50e298e8135d270d0e38b89e0f81001d35446bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GTA010703712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc420df1128e6e14dd9cfd436d7ef0bb688141754d5b0bb8b0f4a59204553b072. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GTA010703713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9904d9b658af8ccdf897a2c19d5272e0dc727ffc6927511a1b4d779194f4ca8d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GTA010703714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bda8789f5603bfec849a5c225876bab5dd6cf54f02f72fec1da522c3d09424. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/GTA010703715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7900ca96d46c8e8153c34fa46b2cb8a7633e474c1b099e672b300e62931e1b3. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GTA010703716.
Fe, Devocion y Tradicion Vol. 1. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfcdf1ee23d3edb8eb6ed84eb11a5895f0a8db1c416b6b42f66d5b5cb379139. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GTA010704092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53063f05b2e33622ed242645283f4ec5e6999229c1578408a69a1aa8be9fc6b1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GTA010704093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bf9d7bdf98636eaea02f156facc6de698c3e926003907175be3041f381aef4. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GTA010704094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944855d30ca450ec33600e919578a411ecc6360ec19822f1768b349e030b6e4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GTA010704095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee7ee8174865e27eaf5045f78dcc6a2a1ceab8caeaa1a2f42dab0bf3a4c712d. 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/GTA010704097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c59d3e936812af65df8df393131cc8b15192865e5004335bdf3b12c08e2526. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GTA010704098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622940e1aa6066e1d6a173fb86a223a9a3103d5fd93e132d78e36531597f7336. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GTA010704100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fadb0278b61688521cd54e08bfba4bb0c192332aa0dd246706fb2b2330c5be7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:06Z), 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/GTA010704101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde00bc252ab8e4e4b1c1045ee98406ffb4209de908eaa52932f83f5230288dd. 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/GTA010704102.