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 0xd785961c4c1be06194363864b312283f4bd697b8ba775d74725d6f29d6c52db0. 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/8c410f09-ba33-4f18-82b4-c22c1dc4a41c.json and https://artists.proofprofile.net/proofs/artist/8c410f09-ba33-4f18-82b4-c22c1dc4a41c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x2e5019ed885d91acbf7eb1c2388221fab0f8f49c26cc5f48624a9b3c0075f2a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEAR42583382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0e1936bb01a8351682d68f856649aab5050d6f261786ea3ad1f1e6c2ab30db. 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/DEAR42583413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcf31a53f1b3a9912dc805ca670e9ca5e5683148acebfcc826335c14b80c463. 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/DEAR42583610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1f7a6d82cefd2a7b66e5ef652a384361083694705d72f29da7957d2a5da9c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEAR42583504.
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 0x963467affddabc3afe0bf3e9d31a71e527fe639f63abd81ccdb4ad3729277bce. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEAR42583496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d6ff0c5ea0d39b51cf2bc7d1dc624c269f143a6b02248199b70260ea4f540. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAR42583386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a4745dc74c6d31f6798a62d3f2f15dfddf0af11b650bea129fb98c7687194. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAR42583847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b06cd53c223f4a664840ad6e387be46be5551af906d7c97387c5a38de37856. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEAR42583420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1508afc0454708779c9b79b9fbbb27e568a18ea0529c0ebbe2abd338c884b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEAR42583502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b0ff12217b12f57a97f369f02edeeca0cbeed6b4e72cee34e19d1b3d29350. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEAR42583414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6b1d07069aa9f026c3cddc791465016481de00ee87d89e5866bbf44a7d9cb7. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEAR42583577.
Viaje De Meditación: Melodías Reflexivas Calmantes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f9b2595961c8ad42053918fe073b9f7b48da4adc838d2ae9faf6fc4291cba3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA012512874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc50f6aaafcd4887c2cebeeff497c0fc1c4908b13156d764bea2eae3b3b089. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ESA012512872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c229b4afc52eddcd5590ee4131b1bf6366ec083115b3b6d70888157fdb0b7c6. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ESA012512873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc4cfec18e082b57ff16fa4c7b20adfa57616f503f4d1968cafc84e99610bb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ESA012512875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c0bb6c58b4ecc9eddea814b396f1d3e0e602e9dc48547e6cb36b1fc5bd8eac. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ESA012512876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917430f59148f1d093f7b0e64d4d4baec9bca4e3df3f6c5df80df47a175b2966. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ESA012512877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddb3bb698810a8ead124e0aba3272c15a5b049f95c5db0602f6cd9248273f90. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ESA012512878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bd2f52820e8bfab73926f41b19fcde0e14e9c1ef822993f7778f306f3f08ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA012512879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfaba5143e492915539bfdf024a415b40041beb2a3388dedaaa6f2e026a0b2b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA012512883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4461b96c7718c0e001d22fd5efd0996d3da7fa88e9fcf12e974cda517c98a1ae. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ESA012512880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d8b799f929ce55614b303fcfb64627c668eb8b2ab4f5bb6080bde9c4b3bded. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ESA012512881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f79b0ffa6e982f73ebd2f1f6d6beabcfdd5f9092fd917404c33453f05e8334. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ESA012512882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99de3e9a17c80e8d418d574f315ef02d9dc59460f3517627eb5613a3e573e81. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ESA012512884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de67d0ddd24ce23d487e53cd49cfcd382e1caf769efc5fa8a83a9bf87f1aaf. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ESA012512885.
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