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 0x00aee100fa7092e6933acbd628b831d6d2e3aea32c35294f711108ab3a79028c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ba2623f-ccf2-4116-94d5-65c7deff99d2.json and https://artists.proofprofile.net/proofs/artist/6ba2623f-ccf2-4116-94d5-65c7deff99d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Mtg - Vai Ganhar Socadão Forte 2 | Sarradão
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 0xd3a6163f3c320fef7d1a94c0db5b13b465e8f59be22a8af06841f30a10610d54. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNJZ2342228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ef94046e176dd91d73d61088ea3536aab85d617ca2361696acab57ca894a02. 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/QZNJY2301075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d27689703683ad14a014d4f0066881d0cc821a33a374778e51a1f6694491239. 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/QZMZ92428590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7321e87e705911c0b3352bbb696b2165a167783297a84d15fb7a51930e98e4b. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/BKJH72400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b4b28053a894218bee6c9dbed54dfa2ba1f73ec5931046d80b241748131485. 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/BKJH72400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cd8eb00624a6a7aade52f08d4568633822f34c2d1cee28601d6a4f717f1830. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BKJH72400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d6a31f51db6046e8398079c6f969e5c2f9ef9dd9b192fa615743e07d676c68. 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/BKJH72400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1fc89d1dab25a6e668dbf349809280b1abd3eafad773c478b1bca10b835fc0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BKJH72400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1dc52fe0266e6d4de92d0b43dd9396b307aaedb6e0562814e609f997bd827. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:18:28Z), 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/BKJH72500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb8722d2ff65e76ed420c62f3c5104789682c887877c95920a8830fae266d91. 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/BKJH72500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43700c2ebaee966a3594f743d724baff3634a7e660a1a2f616ea62a789887e1. 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/BKJH72500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7696f3dd327988b5dd726706dc3ad0b21a9eb89f8350a4695d599d433dc227. 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/BKJH72500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318567f7e648887ef447af246a2a73c2be96e03350d5d466cfcc2cd55bd1173. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5FN2417487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea87bacb3480d402b95a4cda536918b10994d31bc2c429ff7e95328308df7fe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:52Z), 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/QZZ8A2432718.
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 0x9fee2cdf16237369b8f6735356e95614490be53a9e9181e1b96dee9bf01c0b6b. 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/QZNJV2216634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b4d5ff577328ffee24a5160bb0207213aff723c47075c7f2d865d3317bc4bd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BKJH72400109.